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/*
* Copyright 2010-2016 Amazon.com, Inc. or its affiliates. All Rights
* Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.services.dynamodbv2.model;
import java.io.Serializable;
import com.amazonaws.AmazonWebServiceRequest;
/**
*
* Represents the input of an UpdateItem operation.
*
*/
public class UpdateItemRequest extends AmazonWebServiceRequest implements
Serializable, Cloneable {
/**
*
* The name of the table containing the item to update.
*
*/
private String tableName;
/**
*
* The primary key of the item to be updated. Each element consists of an
* attribute name and a value for that attribute.
*
*
* For the primary key, you must provide all of the attributes. For example,
* with a simple primary key, you only need to provide a value for the
* partition key. For a composite primary key, you must provide values for
* both the partition key and the sort key.
*
*/
private java.util.Map key;
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use UpdateExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes; however,
* it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on each,
* and the new value for each. If you are updating an attribute that is an
* index key attribute for any indexes on that table, the attribute type
* must match the index key type defined in the AttributesDefinition
* of the table description. You can use UpdateItem to update any
* non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes must
* have lengths greater than zero. Set type attributes must not be empty.
* Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name to
* modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update. This
* action is only valid for an existing attribute whose data type is Number
* or is a set; do not use ADD for other data types.
*
*
* If an item with the specified primary key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If the
* attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no value is
* specified for DELETE. The data type of the specified value
* must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses 0 as the
* initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a set,
* then Value is appended to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, Value must also be a set
* of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the following
* values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot be
* deleted from a nonexistent item. The operation succeeds, but DynamoDB
* does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the supplied
* primary key and number (or set of numbers) for the attribute value. The
* only data types allowed are Number and Number Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then the
* data types for those attributes must match those of the schema in the
* table's attribute definition.
*
*/
private java.util.Map attributeUpdates;
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A map of attribute/condition pairs. Expected provides a
* conditional block for the UpdateItem operation.
*
*
* Each element of Expected consists of an attribute name, a
* comparison operator, and one or more values. DynamoDB compares the
* attribute with the value(s) you supplied, using the comparison operator.
* For each Expected element, the result of the evaluation is either
* true or false.
*
*
* If you specify more than one element in the Expected map, then by
* default all of the conditions must evaluate to true. In other words, the
* conditions are ANDed together. (You can use the
* ConditionalOperator parameter to OR the conditions instead. If you
* do this, then at least one of the conditions must evaluate to true,
* rather than all of them.)
*
*
* If the Expected map evaluates to true, then the conditional
* operation succeeds; otherwise, it fails.
*
*
* Expected contains the following:
*
*
* -
*
* AttributeValueList - One or more values to evaluate against the
* supplied attribute. The number of values in the list depends on the
* ComparisonOperator being used.
*
*
* For type Number, value comparisons are numeric.
*
*
* String value comparisons for greater than, equals, or less than are based
* on ASCII character code values. For example, a is greater
* than A, and a is greater than B.
* For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
*
* For type Binary, DynamoDB treats each byte of the binary data as unsigned
* when it compares binary values.
*
*
* -
*
* ComparisonOperator - A comparator for evaluating attributes in the
* AttributeValueList. When performing the comparison, DynamoDB uses
* strongly consistent reads.
*
*
* The following comparison operators are available:
*
*
* EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
*
*
* The following are descriptions of each comparison operator.
*
*
* -
*
* EQ : Equal. EQ is supported for all datatypes,
* including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, Binary, String Set, Number Set, or Binary
* Set. If an item contains an AttributeValue element of a different
* type than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NE : Not equal. NE is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, Binary, String Set, Number Set, or Binary Set. If an
* item contains an AttributeValue of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not equal {"NS":["6", "2", "1"]}
* .
*
*
* -
*
* LE : Less than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LT : Less than.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, or Binary (not a set type). If an item contains an
* AttributeValue element of a different type than the one provided
* in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GE : Greater than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GT : Greater than.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NOT_NULL : The attribute exists. NOT_NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the existence of an attribute, not its data type.
* If the data type of attribute "a" is null, and you evaluate
* it using NOT_NULL, the result is a Boolean true. This
* result is because the attribute "a" exists; its data type is
* not relevant to the NOT_NULL comparison operator.
*
*
* -
*
* NULL : The attribute does not exist. NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the nonexistence of an attribute, not its data
* type. If the data type of attribute "a" is null, and you
* evaluate it using NULL, the result is a Boolean
* false. This is because the attribute "a" exists; its
* data type is not relevant to the NULL comparison operator.
*
*
* -
*
* CONTAINS : Checks for a subsequence, or value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is of type String, then the operator checks
* for a substring match. If the target attribute of the comparison is of
* type Binary, then the operator looks for a subsequence of the target that
* matches the input. If the target attribute of the comparison is a set ("
* SS", "NS", or "BS"), then the
* operator evaluates to true if it finds an exact match with any member of
* the set.
*
*
* CONTAINS is supported for lists: When evaluating "
* a CONTAINS b", "a" can be a list; however, "
* b" cannot be a set, a map, or a list.
*
*
* -
*
* NOT_CONTAINS : Checks for absence of a subsequence, or
* absence of a value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is a String, then the operator checks for the
* absence of a substring match. If the target attribute of the comparison
* is Binary, then the operator checks for the absence of a subsequence of
* the target that matches the input. If the target attribute of the
* comparison is a set ("SS", "NS", or "
* BS"), then the operator evaluates to true if it does
* not find an exact match with any member of the set.
*
*
* NOT_CONTAINS is supported for lists: When evaluating "
* a NOT CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map, or a
* list.
*
*
* -
*
* BEGINS_WITH : Checks for a prefix.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String or Binary (not a Number or a set type). The target attribute
* of the comparison must be of type String or Binary (not a Number or a set
* type).
*
*
* -
*
* IN : Checks for matching elements within two sets.
*
*
* AttributeValueList can contain one or more AttributeValue
* elements of type String, Number, or Binary (not a set type). These
* attributes are compared against an existing set type attribute of an
* item. If any elements of the input set are present in the item attribute,
* the expression evaluates to true.
*
*
* -
*
* BETWEEN : Greater than or equal to the first value, and less
* than or equal to the second value.
*
*
* AttributeValueList must contain two AttributeValue elements
* of the same type, either String, Number, or Binary (not a set type). A
* target attribute matches if the target value is greater than, or equal
* to, the first element and less than, or equal to, the second element. If
* an item contains an AttributeValue element of a different type
* than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not compare to
* {"N":"6"}. Also, {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}
*
*
*
*
*
*
* For usage examples of AttributeValueList and
* ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer
* Guide.
*
*
* For backward compatibility with previous DynamoDB releases, the following
* parameters can be used instead of AttributeValueList and
* ComparisonOperator:
*
*
* -
*
* Value - A value for DynamoDB to compare with an attribute.
*
*
* -
*
* Exists - A Boolean value that causes DynamoDB to evaluate the
* value before attempting the conditional operation:
*
*
* -
*
* If Exists is true, DynamoDB will check to see if that
* attribute value already exists in the table. If it is found, then the
* condition evaluates to true; otherwise the condition evaluate to false.
*
*
* -
*
* If Exists is false, DynamoDB assumes that the
* attribute value does not exist in the table. If in fact the value
* does not exist, then the assumption is valid and the condition evaluates
* to true. If the value is found, despite the assumption that it does not
* exist, the condition evaluates to false.
*
*
*
*
* Note that the default value for Exists is true.
*
*
*
*
* The Value and Exists parameters are incompatible with
* AttributeValueList and ComparisonOperator. Note that if you
* use both sets of parameters at once, DynamoDB will return a
* ValidationException exception.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*/
private java.util.Map expected;
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then the
* entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to true,
* then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is the
* default.
*
*
* The operation will succeed only if the entire map evaluates to true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*/
private String conditionalOperator;
/**
*
* Use ReturnValues if you want to get the item attributes as they
* appeared either before or after they were updated. For UpdateItem,
* the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if its
* value is NONE, then nothing is returned. (This setting is
* the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of the
* item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return value
* aside from the small network and processing overhead of receiving a
* larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*
*/
private String returnValues;
private String returnConsumedCapacity;
/**
*
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are returned
* in the response. If set to NONE (the default), no statistics
* are returned.
*
*/
private String returnItemCollectionMetrics;
/**
*
* An expression that defines one or more attributes to be updated, the
* action to be performed on them, and new value(s) for them.
*
*
* The following action values are available for UpdateExpression.
*
*
* -
*
* SET - Adds one or more attributes and values to an item. If
* any of these attribute already exist, they are replaced by the new
* values. You can also use SET to add or subtract from an
* attribute that is of type Number. For example:
* SET myNum = myNum + :val
*
*
* SET supports the following functions:
*
*
* -
*
* if_not_exists (path, operand) - if the item does not contain
* an attribute at the specified path, then if_not_exists
* evaluates to operand; otherwise, it evaluates to path. You can use this
* function to avoid overwriting an attribute that may already be present in
* the item.
*
*
* -
*
* list_append (operand, operand) - evaluates to a list with a
* new element added to it. You can append the new element to the start or
* the end of the list by reversing the order of the operands.
*
*
*
*
* These function names are case-sensitive.
*
*
* -
*
* REMOVE - Removes one or more attributes from an item.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses
* 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute in the item, with a value of 3.
*
*
* -
*
* If the existing data type is a set and if Value is also a set,
* then Value is added to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, the Value must also be a
* set of strings.
*
*
*
*
*
* The ADD action only supports Number and set data types. In
* addition, ADD can only be used on top-level attributes, not
* nested attributes.
*
*
* -
*
* DELETE - Deletes an element from a set.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
*
* The DELETE action only supports set data types. In addition,
* DELETE can only be used on top-level attributes, not nested
* attributes.
*
*
*
*
* You can have many actions in a single expression, such as the following:
* SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
*
*
* For more information on update expressions, see Modifying Items and Attributes in the Amazon DynamoDB Developer
* Guide.
*
*
*
* UpdateExpression replaces the legacy AttributeUpdates
* parameter.
*
*
*/
private String updateExpression;
/**
*
* A condition that must be satisfied in order for a conditional update to
* succeed.
*
*
* An expression can contain any of the following:
*
*
* -
*
* Functions:
* attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size
*
*
* These function names are case-sensitive.
*
*
* -
*
* Comparison operators:
* = | | | | = | = | BETWEEN | IN
*
*
* -
*
* Logical operators: AND | OR | NOT
*
*
*
*
* For more information on condition expressions, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*
*
* ConditionExpression replaces the legacy ConditionalOperator
* and Expected parameters.
*
*
*/
private String conditionExpression;
/**
*
* One or more substitution tokens for attribute names in an expression. The
* following are some use cases for using ExpressionAttributeNames:
*
*
* -
*
* To access an attribute whose name conflicts with a DynamoDB reserved
* word.
*
*
* -
*
* To create a placeholder for repeating occurrences of an attribute name in
* an expression.
*
*
* -
*
* To prevent special characters in an attribute name from being
* misinterpreted in an expression.
*
*
*
*
* Use the # character in an expression to dereference an attribute
* name. For example, consider the following attribute name:
*
*
* -
*
* Percentile
*
*
*
*
* The name of this attribute conflicts with a reserved word, so it cannot
* be used directly in an expression. (For the complete list of reserved
* words, see Reserved Words in the Amazon DynamoDB Developer Guide). To
* work around this, you could specify the following for
* ExpressionAttributeNames:
*
*
* -
*
* {"#P":"Percentile"}
*
*
*
*
* You could then use this substitution in an expression, as in this
* example:
*
*
* -
*
* #P = :val
*
*
*
*
*
* Tokens that begin with the : character are expression attribute
* values, which are placeholders for the actual value at runtime.
*
*
*
* For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer
* Guide.
*
*/
private java.util.Map expressionAttributeNames;
/**
*
* One or more values that can be substituted in an expression.
*
*
* Use the : (colon) character in an expression to dereference an
* attribute value. For example, suppose that you wanted to check whether
* the value of the ProductStatus attribute was one of the following:
*
*
* Available | Backordered | Discontinued
*
*
* You would first need to specify ExpressionAttributeValues as
* follows:
*
*
* { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
*
*
* You could then use these values in an expression, such as this:
*
*
* ProductStatus IN (:avail, :back, :disc)
*
*
* For more information on expression attribute values, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*/
private java.util.Map expressionAttributeValues;
/**
* Default constructor for UpdateItemRequest object. Callers should use the
* setter or fluent setter (with...) methods to initialize the object after
* creating it.
*/
public UpdateItemRequest() {
}
/**
* Constructs a new UpdateItemRequest object. Callers should use the setter
* or fluent setter (with...) methods to initialize any additional object
* members.
*
* @param tableName
* The name of the table containing the item to update.
* @param key
* The primary key of the item to be updated. Each element consists
* of an attribute name and a value for that attribute.
*
* For the primary key, you must provide all of the attributes. For
* example, with a simple primary key, you only need to provide a
* value for the partition key. For a composite primary key, you must
* provide values for both the partition key and the sort key.
* @param attributeUpdates
*
* This is a legacy parameter, for backward compatibility. New
* applications should use UpdateExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes;
* however, it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on
* each, and the new value for each. If you are updating an attribute
* that is an index key attribute for any indexes on that table, the
* attribute type must match the index key type defined in the
* AttributesDefinition of the table description. You can use
* UpdateItem to update any non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes
* must have lengths greater than zero. Set type attributes must not
* be empty. Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name
* to modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update.
* This action is only valid for an existing attribute whose data
* type is Number or is a set; do not use ADD for other
* data types.
*
*
* If an item with the specified primary key is found in the table,
* the following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If
* the attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no
* value is specified for DELETE. The data type of the
* specified value must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also
* a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a
* set, then Value is appended to the existing set. For
* example, if the attribute value is the set [1,2], and
* the ADD action specified [3], then the
* final attribute value is [1,2,3]. An error occurs if
* an ADD action is specified for a set attribute and
* the attribute type specified does not match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, Value must also
* be a set of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot
* be deleted from a nonexistent item. The operation succeeds, but
* DynamoDB does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the
* supplied primary key and number (or set of numbers) for the
* attribute value. The only data types allowed are Number and Number
* Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then
* the data types for those attributes must match those of the schema
* in the table's attribute definition.
*/
public UpdateItemRequest(String tableName,
java.util.Map key,
java.util.Map attributeUpdates) {
setTableName(tableName);
setKey(key);
setAttributeUpdates(attributeUpdates);
}
/**
* Constructs a new UpdateItemRequest object. Callers should use the setter
* or fluent setter (with...) methods to initialize any additional object
* members.
*
* @param tableName
* The name of the table containing the item to update.
* @param key
* The primary key of the item to be updated. Each element consists
* of an attribute name and a value for that attribute.
*
* For the primary key, you must provide all of the attributes. For
* example, with a simple primary key, you only need to provide a
* value for the partition key. For a composite primary key, you must
* provide values for both the partition key and the sort key.
* @param attributeUpdates
*
* This is a legacy parameter, for backward compatibility. New
* applications should use UpdateExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes;
* however, it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on
* each, and the new value for each. If you are updating an attribute
* that is an index key attribute for any indexes on that table, the
* attribute type must match the index key type defined in the
* AttributesDefinition of the table description. You can use
* UpdateItem to update any non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes
* must have lengths greater than zero. Set type attributes must not
* be empty. Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name
* to modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update.
* This action is only valid for an existing attribute whose data
* type is Number or is a set; do not use ADD for other
* data types.
*
*
* If an item with the specified primary key is found in the table,
* the following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If
* the attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no
* value is specified for DELETE. The data type of the
* specified value must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also
* a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a
* set, then Value is appended to the existing set. For
* example, if the attribute value is the set [1,2], and
* the ADD action specified [3], then the
* final attribute value is [1,2,3]. An error occurs if
* an ADD action is specified for a set attribute and
* the attribute type specified does not match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, Value must also
* be a set of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot
* be deleted from a nonexistent item. The operation succeeds, but
* DynamoDB does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the
* supplied primary key and number (or set of numbers) for the
* attribute value. The only data types allowed are Number and Number
* Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then
* the data types for those attributes must match those of the schema
* in the table's attribute definition.
* @param returnValues
* Use ReturnValues if you want to get the item attributes as
* they appeared either before or after they were updated. For
* UpdateItem, the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if
* its value is NONE, then nothing is returned. (This
* setting is the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of
* the item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return
* value aside from the small network and processing overhead of
* receiving a larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*/
public UpdateItemRequest(String tableName,
java.util.Map key,
java.util.Map attributeUpdates,
String returnValues) {
setTableName(tableName);
setKey(key);
setAttributeUpdates(attributeUpdates);
setReturnValues(returnValues);
}
/**
* Constructs a new UpdateItemRequest object. Callers should use the setter
* or fluent setter (with...) methods to initialize any additional object
* members.
*
* @param tableName
* The name of the table containing the item to update.
* @param key
* The primary key of the item to be updated. Each element consists
* of an attribute name and a value for that attribute.
*
* For the primary key, you must provide all of the attributes. For
* example, with a simple primary key, you only need to provide a
* value for the partition key. For a composite primary key, you must
* provide values for both the partition key and the sort key.
* @param attributeUpdates
*
* This is a legacy parameter, for backward compatibility. New
* applications should use UpdateExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes;
* however, it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on
* each, and the new value for each. If you are updating an attribute
* that is an index key attribute for any indexes on that table, the
* attribute type must match the index key type defined in the
* AttributesDefinition of the table description. You can use
* UpdateItem to update any non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes
* must have lengths greater than zero. Set type attributes must not
* be empty. Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name
* to modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update.
* This action is only valid for an existing attribute whose data
* type is Number or is a set; do not use ADD for other
* data types.
*
*
* If an item with the specified primary key is found in the table,
* the following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If
* the attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no
* value is specified for DELETE. The data type of the
* specified value must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also
* a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a
* set, then Value is appended to the existing set. For
* example, if the attribute value is the set [1,2], and
* the ADD action specified [3], then the
* final attribute value is [1,2,3]. An error occurs if
* an ADD action is specified for a set attribute and
* the attribute type specified does not match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, Value must also
* be a set of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot
* be deleted from a nonexistent item. The operation succeeds, but
* DynamoDB does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the
* supplied primary key and number (or set of numbers) for the
* attribute value. The only data types allowed are Number and Number
* Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then
* the data types for those attributes must match those of the schema
* in the table's attribute definition.
* @param returnValues
* Use ReturnValues if you want to get the item attributes as
* they appeared either before or after they were updated. For
* UpdateItem, the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if
* its value is NONE, then nothing is returned. (This
* setting is the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of
* the item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return
* value aside from the small network and processing overhead of
* receiving a larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*/
public UpdateItemRequest(String tableName,
java.util.Map key,
java.util.Map attributeUpdates,
ReturnValue returnValues) {
setTableName(tableName);
setKey(key);
setAttributeUpdates(attributeUpdates);
setReturnValues(returnValues.toString());
}
/**
*
* The name of the table containing the item to update.
*
*
* @param tableName
* The name of the table containing the item to update.
*/
public void setTableName(String tableName) {
this.tableName = tableName;
}
/**
*
* The name of the table containing the item to update.
*
*
* @return The name of the table containing the item to update.
*/
public String getTableName() {
return this.tableName;
}
/**
*
* The name of the table containing the item to update.
*
*
* @param tableName
* The name of the table containing the item to update.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withTableName(String tableName) {
setTableName(tableName);
return this;
}
/**
*
* The primary key of the item to be updated. Each element consists of an
* attribute name and a value for that attribute.
*
*
* For the primary key, you must provide all of the attributes. For example,
* with a simple primary key, you only need to provide a value for the
* partition key. For a composite primary key, you must provide values for
* both the partition key and the sort key.
*
*
* @return The primary key of the item to be updated. Each element consists
* of an attribute name and a value for that attribute.
*
* For the primary key, you must provide all of the attributes. For
* example, with a simple primary key, you only need to provide a
* value for the partition key. For a composite primary key, you
* must provide values for both the partition key and the sort key.
*/
public java.util.Map getKey() {
return key;
}
/**
*
* The primary key of the item to be updated. Each element consists of an
* attribute name and a value for that attribute.
*
*
* For the primary key, you must provide all of the attributes. For example,
* with a simple primary key, you only need to provide a value for the
* partition key. For a composite primary key, you must provide values for
* both the partition key and the sort key.
*
*
* @param key
* The primary key of the item to be updated. Each element consists
* of an attribute name and a value for that attribute.
*
* For the primary key, you must provide all of the attributes. For
* example, with a simple primary key, you only need to provide a
* value for the partition key. For a composite primary key, you must
* provide values for both the partition key and the sort key.
*/
public void setKey(java.util.Map key) {
this.key = key;
}
/**
*
* The primary key of the item to be updated. Each element consists of an
* attribute name and a value for that attribute.
*
*
* For the primary key, you must provide all of the attributes. For example,
* with a simple primary key, you only need to provide a value for the
* partition key. For a composite primary key, you must provide values for
* both the partition key and the sort key.
*
*
* @param key
* The primary key of the item to be updated. Each element consists
* of an attribute name and a value for that attribute.
*
* For the primary key, you must provide all of the attributes. For
* example, with a simple primary key, you only need to provide a
* value for the partition key. For a composite primary key, you must
* provide values for both the partition key and the sort key.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withKey(java.util.Map key) {
setKey(key);
return this;
}
public UpdateItemRequest addKeyEntry(String key, AttributeValue value) {
if (null == this.key) {
this.key = new java.util.HashMap();
}
if (this.key.containsKey(key))
throw new IllegalArgumentException("Duplicated keys ("
+ key.toString() + ") are provided.");
this.key.put(key, value);
return this;
}
/**
* Removes all the entries added into Key. <p> Returns a reference to
* this object so that method calls can be chained together.
*/
public UpdateItemRequest clearKeyEntries() {
this.key = null;
return this;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use UpdateExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes; however,
* it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on each,
* and the new value for each. If you are updating an attribute that is an
* index key attribute for any indexes on that table, the attribute type
* must match the index key type defined in the AttributesDefinition
* of the table description. You can use UpdateItem to update any
* non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes must
* have lengths greater than zero. Set type attributes must not be empty.
* Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name to
* modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update. This
* action is only valid for an existing attribute whose data type is Number
* or is a set; do not use ADD for other data types.
*
*
* If an item with the specified primary key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If the
* attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no value is
* specified for DELETE. The data type of the specified value
* must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses 0 as the
* initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a set,
* then Value is appended to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, Value must also be a set
* of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the following
* values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot be
* deleted from a nonexistent item. The operation succeeds, but DynamoDB
* does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the supplied
* primary key and number (or set of numbers) for the attribute value. The
* only data types allowed are Number and Number Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then the
* data types for those attributes must match those of the schema in the
* table's attribute definition.
*
*
* @return
* This is a legacy parameter, for backward compatibility. New
* applications should use UpdateExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes;
* however, it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on
* each, and the new value for each. If you are updating an
* attribute that is an index key attribute for any indexes on that
* table, the attribute type must match the index key type defined
* in the AttributesDefinition of the table description. You
* can use UpdateItem to update any non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type
* attributes must have lengths greater than zero. Set type
* attributes must not be empty. Requests with empty values will be
* rejected with a ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute
* name to modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update.
* This action is only valid for an existing attribute whose data
* type is Number or is a set; do not use ADD for other
* data types.
*
*
* If an item with the specified primary key is found in the table,
* the following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If
* the attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no
* value is specified for DELETE. The data type of the
* specified value must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is
* also a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a
* set, then Value is appended to the existing set. For
* example, if the attribute value is the set [1,2],
* and the ADD action specified [3], then
* the final attribute value is [1,2,3]. An error
* occurs if an ADD action is specified for a set
* attribute and the attribute type specified does not match the
* existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, Value must
* also be a set of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot
* be deleted from a nonexistent item. The operation succeeds, but
* DynamoDB does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the
* supplied primary key and number (or set of numbers) for the
* attribute value. The only data types allowed are Number and
* Number Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then
* the data types for those attributes must match those of the
* schema in the table's attribute definition.
*/
public java.util.Map getAttributeUpdates() {
return attributeUpdates;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use UpdateExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes; however,
* it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on each,
* and the new value for each. If you are updating an attribute that is an
* index key attribute for any indexes on that table, the attribute type
* must match the index key type defined in the AttributesDefinition
* of the table description. You can use UpdateItem to update any
* non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes must
* have lengths greater than zero. Set type attributes must not be empty.
* Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name to
* modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update. This
* action is only valid for an existing attribute whose data type is Number
* or is a set; do not use ADD for other data types.
*
*
* If an item with the specified primary key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If the
* attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no value is
* specified for DELETE. The data type of the specified value
* must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses 0 as the
* initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a set,
* then Value is appended to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, Value must also be a set
* of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the following
* values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot be
* deleted from a nonexistent item. The operation succeeds, but DynamoDB
* does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the supplied
* primary key and number (or set of numbers) for the attribute value. The
* only data types allowed are Number and Number Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then the
* data types for those attributes must match those of the schema in the
* table's attribute definition.
*
*
* @param attributeUpdates
*
* This is a legacy parameter, for backward compatibility. New
* applications should use UpdateExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes;
* however, it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on
* each, and the new value for each. If you are updating an attribute
* that is an index key attribute for any indexes on that table, the
* attribute type must match the index key type defined in the
* AttributesDefinition of the table description. You can use
* UpdateItem to update any non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes
* must have lengths greater than zero. Set type attributes must not
* be empty. Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name
* to modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update.
* This action is only valid for an existing attribute whose data
* type is Number or is a set; do not use ADD for other
* data types.
*
*
* If an item with the specified primary key is found in the table,
* the following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If
* the attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no
* value is specified for DELETE. The data type of the
* specified value must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also
* a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a
* set, then Value is appended to the existing set. For
* example, if the attribute value is the set [1,2], and
* the ADD action specified [3], then the
* final attribute value is [1,2,3]. An error occurs if
* an ADD action is specified for a set attribute and
* the attribute type specified does not match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, Value must also
* be a set of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot
* be deleted from a nonexistent item. The operation succeeds, but
* DynamoDB does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the
* supplied primary key and number (or set of numbers) for the
* attribute value. The only data types allowed are Number and Number
* Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then
* the data types for those attributes must match those of the schema
* in the table's attribute definition.
*/
public void setAttributeUpdates(
java.util.Map attributeUpdates) {
this.attributeUpdates = attributeUpdates;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use UpdateExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes; however,
* it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on each,
* and the new value for each. If you are updating an attribute that is an
* index key attribute for any indexes on that table, the attribute type
* must match the index key type defined in the AttributesDefinition
* of the table description. You can use UpdateItem to update any
* non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes must
* have lengths greater than zero. Set type attributes must not be empty.
* Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name to
* modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update. This
* action is only valid for an existing attribute whose data type is Number
* or is a set; do not use ADD for other data types.
*
*
* If an item with the specified primary key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If the
* attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no value is
* specified for DELETE. The data type of the specified value
* must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses 0 as the
* initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a set,
* then Value is appended to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, Value must also be a set
* of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the following
* values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot be
* deleted from a nonexistent item. The operation succeeds, but DynamoDB
* does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the supplied
* primary key and number (or set of numbers) for the attribute value. The
* only data types allowed are Number and Number Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then the
* data types for those attributes must match those of the schema in the
* table's attribute definition.
*
*
* @param attributeUpdates
*
* This is a legacy parameter, for backward compatibility. New
* applications should use UpdateExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
* This parameter can be used for modifying top-level attributes;
* however, it does not support individual list or map elements.
*
*
*
* The names of attributes to be modified, the action to perform on
* each, and the new value for each. If you are updating an attribute
* that is an index key attribute for any indexes on that table, the
* attribute type must match the index key type defined in the
* AttributesDefinition of the table description. You can use
* UpdateItem to update any non-key attributes.
*
*
* Attribute values cannot be null. String and Binary type attributes
* must have lengths greater than zero. Set type attributes must not
* be empty. Requests with empty values will be rejected with a
* ValidationException exception.
*
*
* Each AttributeUpdates element consists of an attribute name
* to modify, along with the following:
*
*
* -
*
* Value - The new value, if applicable, for this attribute.
*
*
* -
*
* Action - A value that specifies how to perform the update.
* This action is only valid for an existing attribute whose data
* type is Number or is a set; do not use ADD for other
* data types.
*
*
* If an item with the specified primary key is found in the table,
* the following values perform the following actions:
*
*
* -
*
* PUT - Adds the specified attribute to the item. If
* the attribute already exists, it is replaced by the new value.
*
*
* -
*
* DELETE - Removes the attribute and its value, if no
* value is specified for DELETE. The data type of the
* specified value must match the existing value's data type.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also
* a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute, with a value of 3.
*
*
* -
*
* If the existing data type is a set, and if Value is also a
* set, then Value is appended to the existing set. For
* example, if the attribute value is the set [1,2], and
* the ADD action specified [3], then the
* final attribute value is [1,2,3]. An error occurs if
* an ADD action is specified for a set attribute and
* the attribute type specified does not match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, Value must also
* be a set of strings.
*
*
*
*
*
*
* If no item with the specified key is found in the table, the
* following values perform the following actions:
*
*
* -
*
* PUT - Causes DynamoDB to create a new item with the
* specified primary key, and then adds the attribute.
*
*
* -
*
* DELETE - Nothing happens, because attributes cannot
* be deleted from a nonexistent item. The operation succeeds, but
* DynamoDB does not create a new item.
*
*
* -
*
* ADD - Causes DynamoDB to create an item with the
* supplied primary key and number (or set of numbers) for the
* attribute value. The only data types allowed are Number and Number
* Set.
*
*
*
*
*
*
* If you provide any attributes that are part of an index key, then
* the data types for those attributes must match those of the schema
* in the table's attribute definition.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withAttributeUpdates(
java.util.Map attributeUpdates) {
setAttributeUpdates(attributeUpdates);
return this;
}
public UpdateItemRequest addAttributeUpdatesEntry(String key,
AttributeValueUpdate value) {
if (null == this.attributeUpdates) {
this.attributeUpdates = new java.util.HashMap();
}
if (this.attributeUpdates.containsKey(key))
throw new IllegalArgumentException("Duplicated keys ("
+ key.toString() + ") are provided.");
this.attributeUpdates.put(key, value);
return this;
}
/**
* Removes all the entries added into AttributeUpdates. <p> Returns a
* reference to this object so that method calls can be chained together.
*/
public UpdateItemRequest clearAttributeUpdatesEntries() {
this.attributeUpdates = null;
return this;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A map of attribute/condition pairs. Expected provides a
* conditional block for the UpdateItem operation.
*
*
* Each element of Expected consists of an attribute name, a
* comparison operator, and one or more values. DynamoDB compares the
* attribute with the value(s) you supplied, using the comparison operator.
* For each Expected element, the result of the evaluation is either
* true or false.
*
*
* If you specify more than one element in the Expected map, then by
* default all of the conditions must evaluate to true. In other words, the
* conditions are ANDed together. (You can use the
* ConditionalOperator parameter to OR the conditions instead. If you
* do this, then at least one of the conditions must evaluate to true,
* rather than all of them.)
*
*
* If the Expected map evaluates to true, then the conditional
* operation succeeds; otherwise, it fails.
*
*
* Expected contains the following:
*
*
* -
*
* AttributeValueList - One or more values to evaluate against the
* supplied attribute. The number of values in the list depends on the
* ComparisonOperator being used.
*
*
* For type Number, value comparisons are numeric.
*
*
* String value comparisons for greater than, equals, or less than are based
* on ASCII character code values. For example, a is greater
* than A, and a is greater than B.
* For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
*
* For type Binary, DynamoDB treats each byte of the binary data as unsigned
* when it compares binary values.
*
*
* -
*
* ComparisonOperator - A comparator for evaluating attributes in the
* AttributeValueList. When performing the comparison, DynamoDB uses
* strongly consistent reads.
*
*
* The following comparison operators are available:
*
*
* EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
*
*
* The following are descriptions of each comparison operator.
*
*
* -
*
* EQ : Equal. EQ is supported for all datatypes,
* including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, Binary, String Set, Number Set, or Binary
* Set. If an item contains an AttributeValue element of a different
* type than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NE : Not equal. NE is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, Binary, String Set, Number Set, or Binary Set. If an
* item contains an AttributeValue of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not equal {"NS":["6", "2", "1"]}
* .
*
*
* -
*
* LE : Less than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LT : Less than.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, or Binary (not a set type). If an item contains an
* AttributeValue element of a different type than the one provided
* in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GE : Greater than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GT : Greater than.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NOT_NULL : The attribute exists. NOT_NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the existence of an attribute, not its data type.
* If the data type of attribute "a" is null, and you evaluate
* it using NOT_NULL, the result is a Boolean true. This
* result is because the attribute "a" exists; its data type is
* not relevant to the NOT_NULL comparison operator.
*
*
* -
*
* NULL : The attribute does not exist. NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the nonexistence of an attribute, not its data
* type. If the data type of attribute "a" is null, and you
* evaluate it using NULL, the result is a Boolean
* false. This is because the attribute "a" exists; its
* data type is not relevant to the NULL comparison operator.
*
*
* -
*
* CONTAINS : Checks for a subsequence, or value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is of type String, then the operator checks
* for a substring match. If the target attribute of the comparison is of
* type Binary, then the operator looks for a subsequence of the target that
* matches the input. If the target attribute of the comparison is a set ("
* SS", "NS", or "BS"), then the
* operator evaluates to true if it finds an exact match with any member of
* the set.
*
*
* CONTAINS is supported for lists: When evaluating "
* a CONTAINS b", "a" can be a list; however, "
* b" cannot be a set, a map, or a list.
*
*
* -
*
* NOT_CONTAINS : Checks for absence of a subsequence, or
* absence of a value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is a String, then the operator checks for the
* absence of a substring match. If the target attribute of the comparison
* is Binary, then the operator checks for the absence of a subsequence of
* the target that matches the input. If the target attribute of the
* comparison is a set ("SS", "NS", or "
* BS"), then the operator evaluates to true if it does
* not find an exact match with any member of the set.
*
*
* NOT_CONTAINS is supported for lists: When evaluating "
* a NOT CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map, or a
* list.
*
*
* -
*
* BEGINS_WITH : Checks for a prefix.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String or Binary (not a Number or a set type). The target attribute
* of the comparison must be of type String or Binary (not a Number or a set
* type).
*
*
* -
*
* IN : Checks for matching elements within two sets.
*
*
* AttributeValueList can contain one or more AttributeValue
* elements of type String, Number, or Binary (not a set type). These
* attributes are compared against an existing set type attribute of an
* item. If any elements of the input set are present in the item attribute,
* the expression evaluates to true.
*
*
* -
*
* BETWEEN : Greater than or equal to the first value, and less
* than or equal to the second value.
*
*
* AttributeValueList must contain two AttributeValue elements
* of the same type, either String, Number, or Binary (not a set type). A
* target attribute matches if the target value is greater than, or equal
* to, the first element and less than, or equal to, the second element. If
* an item contains an AttributeValue element of a different type
* than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not compare to
* {"N":"6"}. Also, {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}
*
*
*
*
*
*
* For usage examples of AttributeValueList and
* ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer
* Guide.
*
*
* For backward compatibility with previous DynamoDB releases, the following
* parameters can be used instead of AttributeValueList and
* ComparisonOperator:
*
*
* -
*
* Value - A value for DynamoDB to compare with an attribute.
*
*
* -
*
* Exists - A Boolean value that causes DynamoDB to evaluate the
* value before attempting the conditional operation:
*
*
* -
*
* If Exists is true, DynamoDB will check to see if that
* attribute value already exists in the table. If it is found, then the
* condition evaluates to true; otherwise the condition evaluate to false.
*
*
* -
*
* If Exists is false, DynamoDB assumes that the
* attribute value does not exist in the table. If in fact the value
* does not exist, then the assumption is valid and the condition evaluates
* to true. If the value is found, despite the assumption that it does not
* exist, the condition evaluates to false.
*
*
*
*
* Note that the default value for Exists is true.
*
*
*
*
* The Value and Exists parameters are incompatible with
* AttributeValueList and ComparisonOperator. Note that if you
* use both sets of parameters at once, DynamoDB will return a
* ValidationException exception.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @return
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do
* not combine legacy parameters and expression parameters in a
* single API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A map of attribute/condition pairs. Expected provides a
* conditional block for the UpdateItem operation.
*
*
* Each element of Expected consists of an attribute name, a
* comparison operator, and one or more values. DynamoDB compares
* the attribute with the value(s) you supplied, using the
* comparison operator. For each Expected element, the result
* of the evaluation is either true or false.
*
*
* If you specify more than one element in the Expected map,
* then by default all of the conditions must evaluate to true. In
* other words, the conditions are ANDed together. (You can use the
* ConditionalOperator parameter to OR the conditions
* instead. If you do this, then at least one of the conditions must
* evaluate to true, rather than all of them.)
*
*
* If the Expected map evaluates to true, then the
* conditional operation succeeds; otherwise, it fails.
*
*
* Expected contains the following:
*
*
* -
*
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. The number of values in the list
* depends on the ComparisonOperator being used.
*
*
* For type Number, value comparisons are numeric.
*
*
* String value comparisons for greater than, equals, or less than
* are based on ASCII character code values. For example,
* a is greater than A, and a
* is greater than B. For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
*
* For type Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values.
*
*
* -
*
* ComparisonOperator - A comparator for evaluating
* attributes in the AttributeValueList. When performing the
* comparison, DynamoDB uses strongly consistent reads.
*
*
* The following comparison operators are available:
*
*
* EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
*
*
* The following are descriptions of each comparison operator.
*
*
* -
*
* EQ : Equal. EQ is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, Binary,
* String Set, Number Set, or Binary Set. If an item contains an
* AttributeValue element of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NE : Not equal. NE is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String, Number, Binary, String Set,
* Number Set, or Binary Set. If an item contains an
* AttributeValue of a different type than the one provided
* in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LE : Less than or equal.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"}
* does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LT : Less than.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a
* set type). If an item contains an AttributeValue element
* of a different type than the one provided in the request, the
* value does not match. For example, {"S":"6"} does
* not equal {"N":"6"}. Also, {"N":"6"}
* does not compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* GE : Greater than or equal.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"}
* does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GT : Greater than.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"}
* does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NOT_NULL : The attribute exists.
* NOT_NULL is supported for all datatypes, including
* lists and maps.
*
*
*
* This operator tests for the existence of an attribute, not its
* data type. If the data type of attribute "a" is
* null, and you evaluate it using NOT_NULL, the result
* is a Boolean true. This result is because the attribute "
* a" exists; its data type is not relevant to the
* NOT_NULL comparison operator.
*
*
* -
*
* NULL : The attribute does not exist.
* NULL is supported for all datatypes, including lists
* and maps.
*
*
*
* This operator tests for the nonexistence of an attribute, not its
* data type. If the data type of attribute "a" is
* null, and you evaluate it using NULL, the result is
* a Boolean false. This is because the attribute "
* a" exists; its data type is not relevant to the
* NULL comparison operator.
*
*
* -
*
* CONTAINS : Checks for a subsequence, or value in a
* set.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If the target attribute of the comparison is of
* type String, then the operator checks for a substring match. If
* the target attribute of the comparison is of type Binary, then
* the operator looks for a subsequence of the target that matches
* the input. If the target attribute of the comparison is a set ("
* SS", "NS", or "BS"), then
* the operator evaluates to true if it finds an exact match with
* any member of the set.
*
*
* CONTAINS is supported for lists: When evaluating "
* a CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a
* map, or a list.
*
*
* -
*
* NOT_CONTAINS : Checks for absence of a subsequence,
* or absence of a value in a set.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If the target attribute of the comparison is a
* String, then the operator checks for the absence of a substring
* match. If the target attribute of the comparison is Binary, then
* the operator checks for the absence of a subsequence of the
* target that matches the input. If the target attribute of the
* comparison is a set ("SS", "NS", or "
* BS"), then the operator evaluates to true if it
* does not find an exact match with any member of the set.
*
*
* NOT_CONTAINS is supported for lists: When evaluating "
* a NOT CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a
* map, or a list.
*
*
* -
*
* BEGINS_WITH : Checks for a prefix.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set type). The target attribute of the comparison must be of type
* String or Binary (not a Number or a set type).
*
*
* -
*
* IN : Checks for matching elements within two sets.
*
*
* AttributeValueList can contain one or more
* AttributeValue elements of type String, Number, or Binary
* (not a set type). These attributes are compared against an
* existing set type attribute of an item. If any elements of the
* input set are present in the item attribute, the expression
* evaluates to true.
*
*
* -
*
* BETWEEN : Greater than or equal to the first value,
* and less than or equal to the second value.
*
*
* AttributeValueList must contain two AttributeValue
* elements of the same type, either String, Number, or Binary (not
* a set type). A target attribute matches if the target value is
* greater than, or equal to, the first element and less than, or
* equal to, the second element. If an item contains an
* AttributeValue element of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not compare to {"N":"6"}
* . Also, {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}
*
*
*
*
*
*
* For usage examples of AttributeValueList and
* ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB
* Developer Guide.
*
*
* For backward compatibility with previous DynamoDB releases, the
* following parameters can be used instead of
* AttributeValueList and ComparisonOperator:
*
*
* -
*
* Value - A value for DynamoDB to compare with an attribute.
*
*
* -
*
* Exists - A Boolean value that causes DynamoDB to evaluate
* the value before attempting the conditional operation:
*
*
* -
*
* If Exists is true, DynamoDB will check to see
* if that attribute value already exists in the table. If it is
* found, then the condition evaluates to true; otherwise the
* condition evaluate to false.
*
*
* -
*
* If Exists is false, DynamoDB assumes that the
* attribute value does not exist in the table. If in fact
* the value does not exist, then the assumption is valid and the
* condition evaluates to true. If the value is found, despite the
* assumption that it does not exist, the condition evaluates to
* false.
*
*
*
*
* Note that the default value for Exists is
* true.
*
*
*
*
* The Value and Exists parameters are incompatible
* with AttributeValueList and ComparisonOperator.
* Note that if you use both sets of parameters at once, DynamoDB
* will return a ValidationException exception.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*/
public java.util.Map getExpected() {
return expected;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A map of attribute/condition pairs. Expected provides a
* conditional block for the UpdateItem operation.
*
*
* Each element of Expected consists of an attribute name, a
* comparison operator, and one or more values. DynamoDB compares the
* attribute with the value(s) you supplied, using the comparison operator.
* For each Expected element, the result of the evaluation is either
* true or false.
*
*
* If you specify more than one element in the Expected map, then by
* default all of the conditions must evaluate to true. In other words, the
* conditions are ANDed together. (You can use the
* ConditionalOperator parameter to OR the conditions instead. If you
* do this, then at least one of the conditions must evaluate to true,
* rather than all of them.)
*
*
* If the Expected map evaluates to true, then the conditional
* operation succeeds; otherwise, it fails.
*
*
* Expected contains the following:
*
*
* -
*
* AttributeValueList - One or more values to evaluate against the
* supplied attribute. The number of values in the list depends on the
* ComparisonOperator being used.
*
*
* For type Number, value comparisons are numeric.
*
*
* String value comparisons for greater than, equals, or less than are based
* on ASCII character code values. For example, a is greater
* than A, and a is greater than B.
* For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
*
* For type Binary, DynamoDB treats each byte of the binary data as unsigned
* when it compares binary values.
*
*
* -
*
* ComparisonOperator - A comparator for evaluating attributes in the
* AttributeValueList. When performing the comparison, DynamoDB uses
* strongly consistent reads.
*
*
* The following comparison operators are available:
*
*
* EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
*
*
* The following are descriptions of each comparison operator.
*
*
* -
*
* EQ : Equal. EQ is supported for all datatypes,
* including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, Binary, String Set, Number Set, or Binary
* Set. If an item contains an AttributeValue element of a different
* type than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NE : Not equal. NE is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, Binary, String Set, Number Set, or Binary Set. If an
* item contains an AttributeValue of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not equal {"NS":["6", "2", "1"]}
* .
*
*
* -
*
* LE : Less than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LT : Less than.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, or Binary (not a set type). If an item contains an
* AttributeValue element of a different type than the one provided
* in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GE : Greater than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GT : Greater than.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NOT_NULL : The attribute exists. NOT_NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the existence of an attribute, not its data type.
* If the data type of attribute "a" is null, and you evaluate
* it using NOT_NULL, the result is a Boolean true. This
* result is because the attribute "a" exists; its data type is
* not relevant to the NOT_NULL comparison operator.
*
*
* -
*
* NULL : The attribute does not exist. NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the nonexistence of an attribute, not its data
* type. If the data type of attribute "a" is null, and you
* evaluate it using NULL, the result is a Boolean
* false. This is because the attribute "a" exists; its
* data type is not relevant to the NULL comparison operator.
*
*
* -
*
* CONTAINS : Checks for a subsequence, or value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is of type String, then the operator checks
* for a substring match. If the target attribute of the comparison is of
* type Binary, then the operator looks for a subsequence of the target that
* matches the input. If the target attribute of the comparison is a set ("
* SS", "NS", or "BS"), then the
* operator evaluates to true if it finds an exact match with any member of
* the set.
*
*
* CONTAINS is supported for lists: When evaluating "
* a CONTAINS b", "a" can be a list; however, "
* b" cannot be a set, a map, or a list.
*
*
* -
*
* NOT_CONTAINS : Checks for absence of a subsequence, or
* absence of a value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is a String, then the operator checks for the
* absence of a substring match. If the target attribute of the comparison
* is Binary, then the operator checks for the absence of a subsequence of
* the target that matches the input. If the target attribute of the
* comparison is a set ("SS", "NS", or "
* BS"), then the operator evaluates to true if it does
* not find an exact match with any member of the set.
*
*
* NOT_CONTAINS is supported for lists: When evaluating "
* a NOT CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map, or a
* list.
*
*
* -
*
* BEGINS_WITH : Checks for a prefix.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String or Binary (not a Number or a set type). The target attribute
* of the comparison must be of type String or Binary (not a Number or a set
* type).
*
*
* -
*
* IN : Checks for matching elements within two sets.
*
*
* AttributeValueList can contain one or more AttributeValue
* elements of type String, Number, or Binary (not a set type). These
* attributes are compared against an existing set type attribute of an
* item. If any elements of the input set are present in the item attribute,
* the expression evaluates to true.
*
*
* -
*
* BETWEEN : Greater than or equal to the first value, and less
* than or equal to the second value.
*
*
* AttributeValueList must contain two AttributeValue elements
* of the same type, either String, Number, or Binary (not a set type). A
* target attribute matches if the target value is greater than, or equal
* to, the first element and less than, or equal to, the second element. If
* an item contains an AttributeValue element of a different type
* than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not compare to
* {"N":"6"}. Also, {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}
*
*
*
*
*
*
* For usage examples of AttributeValueList and
* ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer
* Guide.
*
*
* For backward compatibility with previous DynamoDB releases, the following
* parameters can be used instead of AttributeValueList and
* ComparisonOperator:
*
*
* -
*
* Value - A value for DynamoDB to compare with an attribute.
*
*
* -
*
* Exists - A Boolean value that causes DynamoDB to evaluate the
* value before attempting the conditional operation:
*
*
* -
*
* If Exists is true, DynamoDB will check to see if that
* attribute value already exists in the table. If it is found, then the
* condition evaluates to true; otherwise the condition evaluate to false.
*
*
* -
*
* If Exists is false, DynamoDB assumes that the
* attribute value does not exist in the table. If in fact the value
* does not exist, then the assumption is valid and the condition evaluates
* to true. If the value is found, despite the assumption that it does not
* exist, the condition evaluates to false.
*
*
*
*
* Note that the default value for Exists is true.
*
*
*
*
* The Value and Exists parameters are incompatible with
* AttributeValueList and ComparisonOperator. Note that if you
* use both sets of parameters at once, DynamoDB will return a
* ValidationException exception.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @param expected
*
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do
* not combine legacy parameters and expression parameters in a
* single API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A map of attribute/condition pairs. Expected provides a
* conditional block for the UpdateItem operation.
*
*
* Each element of Expected consists of an attribute name, a
* comparison operator, and one or more values. DynamoDB compares the
* attribute with the value(s) you supplied, using the comparison
* operator. For each Expected element, the result of the
* evaluation is either true or false.
*
*
* If you specify more than one element in the Expected map,
* then by default all of the conditions must evaluate to true. In
* other words, the conditions are ANDed together. (You can use the
* ConditionalOperator parameter to OR the conditions instead.
* If you do this, then at least one of the conditions must evaluate
* to true, rather than all of them.)
*
*
* If the Expected map evaluates to true, then the conditional
* operation succeeds; otherwise, it fails.
*
*
* Expected contains the following:
*
*
* -
*
* AttributeValueList - One or more values to evaluate against
* the supplied attribute. The number of values in the list depends
* on the ComparisonOperator being used.
*
*
* For type Number, value comparisons are numeric.
*
*
* String value comparisons for greater than, equals, or less than
* are based on ASCII character code values. For example,
* a is greater than A, and a
* is greater than B. For a list of code values, see http
* ://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
*
* For type Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values.
*
*
* -
*
* ComparisonOperator - A comparator for evaluating attributes
* in the AttributeValueList. When performing the comparison,
* DynamoDB uses strongly consistent reads.
*
*
* The following comparison operators are available:
*
*
* EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
*
*
* The following are descriptions of each comparison operator.
*
*
* -
*
* EQ : Equal. EQ is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, Binary,
* String Set, Number Set, or Binary Set. If an item contains an
* AttributeValue element of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NE : Not equal. NE is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String, Number, Binary, String Set,
* Number Set, or Binary Set. If an item contains an
* AttributeValue of a different type than the one provided in
* the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LE : Less than or equal.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"} does
* not equal {"N":"6"}. Also, {"N":"6"}
* does not compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* LT : Less than.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set
* type). If an item contains an AttributeValue element of a
* different type than the one provided in the request, the value
* does not match. For example, {"S":"6"} does not equal
* {"N":"6"}. Also, {"N":"6"} does not
* compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* GE : Greater than or equal.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"} does
* not equal {"N":"6"}. Also, {"N":"6"}
* does not compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* GT : Greater than.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"} does
* not equal {"N":"6"}. Also, {"N":"6"}
* does not compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* NOT_NULL : The attribute exists.
* NOT_NULL is supported for all datatypes, including
* lists and maps.
*
*
*
* This operator tests for the existence of an attribute, not its
* data type. If the data type of attribute "a" is null,
* and you evaluate it using NOT_NULL, the result is a
* Boolean true. This result is because the attribute "
* a" exists; its data type is not relevant to the
* NOT_NULL comparison operator.
*
*
* -
*
* NULL : The attribute does not exist.
* NULL is supported for all datatypes, including lists
* and maps.
*
*
*
* This operator tests for the nonexistence of an attribute, not its
* data type. If the data type of attribute "a" is null,
* and you evaluate it using NULL, the result is a
* Boolean false. This is because the attribute "
* a" exists; its data type is not relevant to the
* NULL comparison operator.
*
*
* -
*
* CONTAINS : Checks for a subsequence, or value in a
* set.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If the target attribute of the comparison is of
* type String, then the operator checks for a substring match. If
* the target attribute of the comparison is of type Binary, then the
* operator looks for a subsequence of the target that matches the
* input. If the target attribute of the comparison is a set ("
* SS", "NS", or "BS"), then
* the operator evaluates to true if it finds an exact match with any
* member of the set.
*
*
* CONTAINS is supported for lists: When evaluating "
* a CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map,
* or a list.
*
*
* -
*
* NOT_CONTAINS : Checks for absence of a subsequence,
* or absence of a value in a set.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If the target attribute of the comparison is a
* String, then the operator checks for the absence of a substring
* match. If the target attribute of the comparison is Binary, then
* the operator checks for the absence of a subsequence of the target
* that matches the input. If the target attribute of the comparison
* is a set ("SS", "NS", or "
* BS"), then the operator evaluates to true if it
* does not find an exact match with any member of the set.
*
*
* NOT_CONTAINS is supported for lists: When evaluating "
* a NOT CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map,
* or a list.
*
*
* -
*
* BEGINS_WITH : Checks for a prefix.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set type). The target attribute of the comparison must be of type
* String or Binary (not a Number or a set type).
*
*
* -
*
* IN : Checks for matching elements within two sets.
*
*
* AttributeValueList can contain one or more
* AttributeValue elements of type String, Number, or Binary
* (not a set type). These attributes are compared against an
* existing set type attribute of an item. If any elements of the
* input set are present in the item attribute, the expression
* evaluates to true.
*
*
* -
*
* BETWEEN : Greater than or equal to the first value,
* and less than or equal to the second value.
*
*
* AttributeValueList must contain two AttributeValue
* elements of the same type, either String, Number, or Binary (not a
* set type). A target attribute matches if the target value is
* greater than, or equal to, the first element and less than, or
* equal to, the second element. If an item contains an
* AttributeValue element of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not compare to {"N":"6"}.
* Also, {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}
*
*
*
*
*
*
* For usage examples of AttributeValueList and
* ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB
* Developer Guide.
*
*
* For backward compatibility with previous DynamoDB releases, the
* following parameters can be used instead of
* AttributeValueList and ComparisonOperator:
*
*
* -
*
* Value - A value for DynamoDB to compare with an attribute.
*
*
* -
*
* Exists - A Boolean value that causes DynamoDB to evaluate
* the value before attempting the conditional operation:
*
*
* -
*
* If Exists is true, DynamoDB will check to see
* if that attribute value already exists in the table. If it is
* found, then the condition evaluates to true; otherwise the
* condition evaluate to false.
*
*
* -
*
* If Exists is false, DynamoDB assumes that the
* attribute value does not exist in the table. If in fact the
* value does not exist, then the assumption is valid and the
* condition evaluates to true. If the value is found, despite the
* assumption that it does not exist, the condition evaluates to
* false.
*
*
*
*
* Note that the default value for Exists is true
* .
*
*
*
*
* The Value and Exists parameters are incompatible
* with AttributeValueList and ComparisonOperator. Note
* that if you use both sets of parameters at once, DynamoDB will
* return a ValidationException exception.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*/
public void setExpected(
java.util.Map expected) {
this.expected = expected;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A map of attribute/condition pairs. Expected provides a
* conditional block for the UpdateItem operation.
*
*
* Each element of Expected consists of an attribute name, a
* comparison operator, and one or more values. DynamoDB compares the
* attribute with the value(s) you supplied, using the comparison operator.
* For each Expected element, the result of the evaluation is either
* true or false.
*
*
* If you specify more than one element in the Expected map, then by
* default all of the conditions must evaluate to true. In other words, the
* conditions are ANDed together. (You can use the
* ConditionalOperator parameter to OR the conditions instead. If you
* do this, then at least one of the conditions must evaluate to true,
* rather than all of them.)
*
*
* If the Expected map evaluates to true, then the conditional
* operation succeeds; otherwise, it fails.
*
*
* Expected contains the following:
*
*
* -
*
* AttributeValueList - One or more values to evaluate against the
* supplied attribute. The number of values in the list depends on the
* ComparisonOperator being used.
*
*
* For type Number, value comparisons are numeric.
*
*
* String value comparisons for greater than, equals, or less than are based
* on ASCII character code values. For example, a is greater
* than A, and a is greater than B.
* For a list of code values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
*
* For type Binary, DynamoDB treats each byte of the binary data as unsigned
* when it compares binary values.
*
*
* -
*
* ComparisonOperator - A comparator for evaluating attributes in the
* AttributeValueList. When performing the comparison, DynamoDB uses
* strongly consistent reads.
*
*
* The following comparison operators are available:
*
*
* EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
*
*
* The following are descriptions of each comparison operator.
*
*
* -
*
* EQ : Equal. EQ is supported for all datatypes,
* including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, Binary, String Set, Number Set, or Binary
* Set. If an item contains an AttributeValue element of a different
* type than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NE : Not equal. NE is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, Binary, String Set, Number Set, or Binary Set. If an
* item contains an AttributeValue of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not equal {"NS":["6", "2", "1"]}
* .
*
*
* -
*
* LE : Less than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LT : Less than.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String, Number, or Binary (not a set type). If an item contains an
* AttributeValue element of a different type than the one provided
* in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GE : Greater than or equal.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* GT : Greater than.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If an item
* contains an AttributeValue element of a different type than the
* one provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}. Also,
* {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NOT_NULL : The attribute exists. NOT_NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the existence of an attribute, not its data type.
* If the data type of attribute "a" is null, and you evaluate
* it using NOT_NULL, the result is a Boolean true. This
* result is because the attribute "a" exists; its data type is
* not relevant to the NOT_NULL comparison operator.
*
*
* -
*
* NULL : The attribute does not exist. NULL is
* supported for all datatypes, including lists and maps.
*
*
*
* This operator tests for the nonexistence of an attribute, not its data
* type. If the data type of attribute "a" is null, and you
* evaluate it using NULL, the result is a Boolean
* false. This is because the attribute "a" exists; its
* data type is not relevant to the NULL comparison operator.
*
*
* -
*
* CONTAINS : Checks for a subsequence, or value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is of type String, then the operator checks
* for a substring match. If the target attribute of the comparison is of
* type Binary, then the operator looks for a subsequence of the target that
* matches the input. If the target attribute of the comparison is a set ("
* SS", "NS", or "BS"), then the
* operator evaluates to true if it finds an exact match with any member of
* the set.
*
*
* CONTAINS is supported for lists: When evaluating "
* a CONTAINS b", "a" can be a list; however, "
* b" cannot be a set, a map, or a list.
*
*
* -
*
* NOT_CONTAINS : Checks for absence of a subsequence, or
* absence of a value in a set.
*
*
* AttributeValueList can contain only one AttributeValue
* element of type String, Number, or Binary (not a set type). If the target
* attribute of the comparison is a String, then the operator checks for the
* absence of a substring match. If the target attribute of the comparison
* is Binary, then the operator checks for the absence of a subsequence of
* the target that matches the input. If the target attribute of the
* comparison is a set ("SS", "NS", or "
* BS"), then the operator evaluates to true if it does
* not find an exact match with any member of the set.
*
*
* NOT_CONTAINS is supported for lists: When evaluating "
* a NOT CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map, or a
* list.
*
*
* -
*
* BEGINS_WITH : Checks for a prefix.
*
*
* AttributeValueList can contain only one AttributeValue of
* type String or Binary (not a Number or a set type). The target attribute
* of the comparison must be of type String or Binary (not a Number or a set
* type).
*
*
* -
*
* IN : Checks for matching elements within two sets.
*
*
* AttributeValueList can contain one or more AttributeValue
* elements of type String, Number, or Binary (not a set type). These
* attributes are compared against an existing set type attribute of an
* item. If any elements of the input set are present in the item attribute,
* the expression evaluates to true.
*
*
* -
*
* BETWEEN : Greater than or equal to the first value, and less
* than or equal to the second value.
*
*
* AttributeValueList must contain two AttributeValue elements
* of the same type, either String, Number, or Binary (not a set type). A
* target attribute matches if the target value is greater than, or equal
* to, the first element and less than, or equal to, the second element. If
* an item contains an AttributeValue element of a different type
* than the one provided in the request, the value does not match. For
* example, {"S":"6"} does not compare to
* {"N":"6"}. Also, {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}
*
*
*
*
*
*
* For usage examples of AttributeValueList and
* ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB Developer
* Guide.
*
*
* For backward compatibility with previous DynamoDB releases, the following
* parameters can be used instead of AttributeValueList and
* ComparisonOperator:
*
*
* -
*
* Value - A value for DynamoDB to compare with an attribute.
*
*
* -
*
* Exists - A Boolean value that causes DynamoDB to evaluate the
* value before attempting the conditional operation:
*
*
* -
*
* If Exists is true, DynamoDB will check to see if that
* attribute value already exists in the table. If it is found, then the
* condition evaluates to true; otherwise the condition evaluate to false.
*
*
* -
*
* If Exists is false, DynamoDB assumes that the
* attribute value does not exist in the table. If in fact the value
* does not exist, then the assumption is valid and the condition evaluates
* to true. If the value is found, despite the assumption that it does not
* exist, the condition evaluates to false.
*
*
*
*
* Note that the default value for Exists is true.
*
*
*
*
* The Value and Exists parameters are incompatible with
* AttributeValueList and ComparisonOperator. Note that if you
* use both sets of parameters at once, DynamoDB will return a
* ValidationException exception.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @param expected
*
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do
* not combine legacy parameters and expression parameters in a
* single API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A map of attribute/condition pairs. Expected provides a
* conditional block for the UpdateItem operation.
*
*
* Each element of Expected consists of an attribute name, a
* comparison operator, and one or more values. DynamoDB compares the
* attribute with the value(s) you supplied, using the comparison
* operator. For each Expected element, the result of the
* evaluation is either true or false.
*
*
* If you specify more than one element in the Expected map,
* then by default all of the conditions must evaluate to true. In
* other words, the conditions are ANDed together. (You can use the
* ConditionalOperator parameter to OR the conditions instead.
* If you do this, then at least one of the conditions must evaluate
* to true, rather than all of them.)
*
*
* If the Expected map evaluates to true, then the conditional
* operation succeeds; otherwise, it fails.
*
*
* Expected contains the following:
*
*
* -
*
* AttributeValueList - One or more values to evaluate against
* the supplied attribute. The number of values in the list depends
* on the ComparisonOperator being used.
*
*
* For type Number, value comparisons are numeric.
*
*
* String value comparisons for greater than, equals, or less than
* are based on ASCII character code values. For example,
* a is greater than A, and a
* is greater than B. For a list of code values, see http
* ://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
*
* For type Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values.
*
*
* -
*
* ComparisonOperator - A comparator for evaluating attributes
* in the AttributeValueList. When performing the comparison,
* DynamoDB uses strongly consistent reads.
*
*
* The following comparison operators are available:
*
*
* EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS | NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
*
*
* The following are descriptions of each comparison operator.
*
*
* -
*
* EQ : Equal. EQ is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, Binary,
* String Set, Number Set, or Binary Set. If an item contains an
* AttributeValue element of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* NE : Not equal. NE is supported for all
* datatypes, including lists and maps.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String, Number, Binary, String Set,
* Number Set, or Binary Set. If an item contains an
* AttributeValue of a different type than the one provided in
* the request, the value does not match. For example,
* {"S":"6"} does not equal {"N":"6"}.
* Also, {"N":"6"} does not equal
* {"NS":["6", "2", "1"]}.
*
*
* -
*
* LE : Less than or equal.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"} does
* not equal {"N":"6"}. Also, {"N":"6"}
* does not compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* LT : Less than.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set
* type). If an item contains an AttributeValue element of a
* different type than the one provided in the request, the value
* does not match. For example, {"S":"6"} does not equal
* {"N":"6"}. Also, {"N":"6"} does not
* compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* GE : Greater than or equal.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"} does
* not equal {"N":"6"}. Also, {"N":"6"}
* does not compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* GT : Greater than.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If an item contains an AttributeValue
* element of a different type than the one provided in the request,
* the value does not match. For example, {"S":"6"} does
* not equal {"N":"6"}. Also, {"N":"6"}
* does not compare to {"NS":["6", "2", "1"]}.
*
*
* -
*
* NOT_NULL : The attribute exists.
* NOT_NULL is supported for all datatypes, including
* lists and maps.
*
*
*
* This operator tests for the existence of an attribute, not its
* data type. If the data type of attribute "a" is null,
* and you evaluate it using NOT_NULL, the result is a
* Boolean true. This result is because the attribute "
* a" exists; its data type is not relevant to the
* NOT_NULL comparison operator.
*
*
* -
*
* NULL : The attribute does not exist.
* NULL is supported for all datatypes, including lists
* and maps.
*
*
*
* This operator tests for the nonexistence of an attribute, not its
* data type. If the data type of attribute "a" is null,
* and you evaluate it using NULL, the result is a
* Boolean false. This is because the attribute "
* a" exists; its data type is not relevant to the
* NULL comparison operator.
*
*
* -
*
* CONTAINS : Checks for a subsequence, or value in a
* set.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If the target attribute of the comparison is of
* type String, then the operator checks for a substring match. If
* the target attribute of the comparison is of type Binary, then the
* operator looks for a subsequence of the target that matches the
* input. If the target attribute of the comparison is a set ("
* SS", "NS", or "BS"), then
* the operator evaluates to true if it finds an exact match with any
* member of the set.
*
*
* CONTAINS is supported for lists: When evaluating "
* a CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map,
* or a list.
*
*
* -
*
* NOT_CONTAINS : Checks for absence of a subsequence,
* or absence of a value in a set.
*
*
* AttributeValueList can contain only one
* AttributeValue element of type String, Number, or Binary
* (not a set type). If the target attribute of the comparison is a
* String, then the operator checks for the absence of a substring
* match. If the target attribute of the comparison is Binary, then
* the operator checks for the absence of a subsequence of the target
* that matches the input. If the target attribute of the comparison
* is a set ("SS", "NS", or "
* BS"), then the operator evaluates to true if it
* does not find an exact match with any member of the set.
*
*
* NOT_CONTAINS is supported for lists: When evaluating "
* a NOT CONTAINS b", "a
* " can be a list; however, "b" cannot be a set, a map,
* or a list.
*
*
* -
*
* BEGINS_WITH : Checks for a prefix.
*
*
* AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set type). The target attribute of the comparison must be of type
* String or Binary (not a Number or a set type).
*
*
* -
*
* IN : Checks for matching elements within two sets.
*
*
* AttributeValueList can contain one or more
* AttributeValue elements of type String, Number, or Binary
* (not a set type). These attributes are compared against an
* existing set type attribute of an item. If any elements of the
* input set are present in the item attribute, the expression
* evaluates to true.
*
*
* -
*
* BETWEEN : Greater than or equal to the first value,
* and less than or equal to the second value.
*
*
* AttributeValueList must contain two AttributeValue
* elements of the same type, either String, Number, or Binary (not a
* set type). A target attribute matches if the target value is
* greater than, or equal to, the first element and less than, or
* equal to, the second element. If an item contains an
* AttributeValue element of a different type than the one
* provided in the request, the value does not match. For example,
* {"S":"6"} does not compare to {"N":"6"}.
* Also, {"N":"6"} does not compare to
* {"NS":["6", "2", "1"]}
*
*
*
*
*
*
* For usage examples of AttributeValueList and
* ComparisonOperator, see Legacy Conditional Parameters in the Amazon DynamoDB
* Developer Guide.
*
*
* For backward compatibility with previous DynamoDB releases, the
* following parameters can be used instead of
* AttributeValueList and ComparisonOperator:
*
*
* -
*
* Value - A value for DynamoDB to compare with an attribute.
*
*
* -
*
* Exists - A Boolean value that causes DynamoDB to evaluate
* the value before attempting the conditional operation:
*
*
* -
*
* If Exists is true, DynamoDB will check to see
* if that attribute value already exists in the table. If it is
* found, then the condition evaluates to true; otherwise the
* condition evaluate to false.
*
*
* -
*
* If Exists is false, DynamoDB assumes that the
* attribute value does not exist in the table. If in fact the
* value does not exist, then the assumption is valid and the
* condition evaluates to true. If the value is found, despite the
* assumption that it does not exist, the condition evaluates to
* false.
*
*
*
*
* Note that the default value for Exists is true
* .
*
*
*
*
* The Value and Exists parameters are incompatible
* with AttributeValueList and ComparisonOperator. Note
* that if you use both sets of parameters at once, DynamoDB will
* return a ValidationException exception.
*
*
*
* This parameter does not support attributes of type List or Map.
*
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withExpected(
java.util.Map expected) {
setExpected(expected);
return this;
}
public UpdateItemRequest addExpectedEntry(String key,
ExpectedAttributeValue value) {
if (null == this.expected) {
this.expected = new java.util.HashMap();
}
if (this.expected.containsKey(key))
throw new IllegalArgumentException("Duplicated keys ("
+ key.toString() + ") are provided.");
this.expected.put(key, value);
return this;
}
/**
* Removes all the entries added into Expected. <p> Returns a reference
* to this object so that method calls can be chained together.
*/
public UpdateItemRequest clearExpectedEntries() {
this.expected = null;
return this;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then the
* entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to true,
* then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is the
* default.
*
*
* The operation will succeed only if the entire map evaluates to true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @param conditionalOperator
*
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the
* Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then
* the entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to
* true, then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is
* the default.
*
*
* The operation will succeed only if the entire map evaluates to
* true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
* @see ConditionalOperator
*/
public void setConditionalOperator(String conditionalOperator) {
this.conditionalOperator = conditionalOperator;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then the
* entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to true,
* then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is the
* default.
*
*
* The operation will succeed only if the entire map evaluates to true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @return
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do
* not combine legacy parameters and expression parameters in a
* single API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the
* Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true,
* then the entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to
* true, then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is
* the default.
*
*
* The operation will succeed only if the entire map evaluates to
* true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
* @see ConditionalOperator
*/
public String getConditionalOperator() {
return this.conditionalOperator;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then the
* entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to true,
* then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is the
* default.
*
*
* The operation will succeed only if the entire map evaluates to true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @param conditionalOperator
*
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the
* Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then
* the entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to
* true, then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is
* the default.
*
*
* The operation will succeed only if the entire map evaluates to
* true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ConditionalOperator
*/
public UpdateItemRequest withConditionalOperator(String conditionalOperator) {
setConditionalOperator(conditionalOperator);
return this;
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then the
* entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to true,
* then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is the
* default.
*
*
* The operation will succeed only if the entire map evaluates to true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @param conditionalOperator
*
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the
* Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then
* the entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to
* true, then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is
* the default.
*
*
* The operation will succeed only if the entire map evaluates to
* true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
* @see ConditionalOperator
*/
public void setConditionalOperator(ConditionalOperator conditionalOperator) {
this.conditionalOperator = conditionalOperator.toString();
}
/**
*
*
* This is a legacy parameter, for backward compatibility. New applications
* should use ConditionExpression instead. Do not combine legacy
* parameters and expression parameters in a single API call; otherwise,
* DynamoDB will return a ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then the
* entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to true,
* then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is the
* default.
*
*
* The operation will succeed only if the entire map evaluates to true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
*
*
* @param conditionalOperator
*
* This is a legacy parameter, for backward compatibility. New
* applications should use ConditionExpression instead. Do not
* combine legacy parameters and expression parameters in a single
* API call; otherwise, DynamoDB will return a
* ValidationException exception.
*
*
*
* A logical operator to apply to the conditions in the
* Expected map:
*
*
* -
*
* AND - If all of the conditions evaluate to true, then
* the entire map evaluates to true.
*
*
* -
*
* OR - If at least one of the conditions evaluate to
* true, then the entire map evaluates to true.
*
*
*
*
* If you omit ConditionalOperator, then AND is
* the default.
*
*
* The operation will succeed only if the entire map evaluates to
* true.
*
*
*
* This parameter does not support attributes of type List or Map.
*
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ConditionalOperator
*/
public UpdateItemRequest withConditionalOperator(
ConditionalOperator conditionalOperator) {
setConditionalOperator(conditionalOperator);
return this;
}
/**
*
* Use ReturnValues if you want to get the item attributes as they
* appeared either before or after they were updated. For UpdateItem,
* the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if its
* value is NONE, then nothing is returned. (This setting is
* the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of the
* item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return value
* aside from the small network and processing overhead of receiving a
* larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*
*
* @param returnValues
* Use ReturnValues if you want to get the item attributes as
* they appeared either before or after they were updated. For
* UpdateItem, the valid values are:
*
* -
*
* NONE - If ReturnValues is not specified, or if
* its value is NONE, then nothing is returned. (This
* setting is the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of
* the item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return
* value aside from the small network and processing overhead of
* receiving a larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
* @see ReturnValue
*/
public void setReturnValues(String returnValues) {
this.returnValues = returnValues;
}
/**
*
* Use ReturnValues if you want to get the item attributes as they
* appeared either before or after they were updated. For UpdateItem,
* the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if its
* value is NONE, then nothing is returned. (This setting is
* the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of the
* item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return value
* aside from the small network and processing overhead of receiving a
* larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*
*
* @return Use ReturnValues if you want to get the item attributes as
* they appeared either before or after they were updated. For
* UpdateItem, the valid values are:
*
* -
*
* NONE - If ReturnValues is not specified, or
* if its value is NONE, then nothing is returned.
* (This setting is the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an
* attribute name-value pair, then the content of the old item is
* returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version
* of the item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return
* value aside from the small network and processing overhead of
* receiving a larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
* @see ReturnValue
*/
public String getReturnValues() {
return this.returnValues;
}
/**
*
* Use ReturnValues if you want to get the item attributes as they
* appeared either before or after they were updated. For UpdateItem,
* the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if its
* value is NONE, then nothing is returned. (This setting is
* the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of the
* item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return value
* aside from the small network and processing overhead of receiving a
* larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*
*
* @param returnValues
* Use ReturnValues if you want to get the item attributes as
* they appeared either before or after they were updated. For
* UpdateItem, the valid values are:
*
* -
*
* NONE - If ReturnValues is not specified, or if
* its value is NONE, then nothing is returned. (This
* setting is the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of
* the item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return
* value aside from the small network and processing overhead of
* receiving a larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ReturnValue
*/
public UpdateItemRequest withReturnValues(String returnValues) {
setReturnValues(returnValues);
return this;
}
/**
*
* Use ReturnValues if you want to get the item attributes as they
* appeared either before or after they were updated. For UpdateItem,
* the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if its
* value is NONE, then nothing is returned. (This setting is
* the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of the
* item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return value
* aside from the small network and processing overhead of receiving a
* larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*
*
* @param returnValues
* Use ReturnValues if you want to get the item attributes as
* they appeared either before or after they were updated. For
* UpdateItem, the valid values are:
*
* -
*
* NONE - If ReturnValues is not specified, or if
* its value is NONE, then nothing is returned. (This
* setting is the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of
* the item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return
* value aside from the small network and processing overhead of
* receiving a larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
* @see ReturnValue
*/
public void setReturnValues(ReturnValue returnValues) {
this.returnValues = returnValues.toString();
}
/**
*
* Use ReturnValues if you want to get the item attributes as they
* appeared either before or after they were updated. For UpdateItem,
* the valid values are:
*
*
* -
*
* NONE - If ReturnValues is not specified, or if its
* value is NONE, then nothing is returned. (This setting is
* the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of the
* item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return value
* aside from the small network and processing overhead of receiving a
* larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
*
*
* @param returnValues
* Use ReturnValues if you want to get the item attributes as
* they appeared either before or after they were updated. For
* UpdateItem, the valid values are:
*
* -
*
* NONE - If ReturnValues is not specified, or if
* its value is NONE, then nothing is returned. (This
* setting is the default for ReturnValues.)
*
*
* -
*
* ALL_OLD - If UpdateItem overwrote an attribute
* name-value pair, then the content of the old item is returned.
*
*
* -
*
* UPDATED_OLD - The old versions of only the updated
* attributes are returned.
*
*
* -
*
* ALL_NEW - All of the attributes of the new version of
* the item are returned.
*
*
* -
*
* UPDATED_NEW - The new versions of only the updated
* attributes are returned.
*
*
*
*
* There is no additional cost associated with requesting a return
* value aside from the small network and processing overhead of
* receiving a larger response. No Read Capacity Units are consumed.
*
*
* Values returned are strongly consistent
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ReturnValue
*/
public UpdateItemRequest withReturnValues(ReturnValue returnValues) {
setReturnValues(returnValues);
return this;
}
/**
* @param returnConsumedCapacity
* @see ReturnConsumedCapacity
*/
public void setReturnConsumedCapacity(String returnConsumedCapacity) {
this.returnConsumedCapacity = returnConsumedCapacity;
}
/**
* @return
* @see ReturnConsumedCapacity
*/
public String getReturnConsumedCapacity() {
return this.returnConsumedCapacity;
}
/**
* @param returnConsumedCapacity
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ReturnConsumedCapacity
*/
public UpdateItemRequest withReturnConsumedCapacity(
String returnConsumedCapacity) {
setReturnConsumedCapacity(returnConsumedCapacity);
return this;
}
/**
* @param returnConsumedCapacity
* @see ReturnConsumedCapacity
*/
public void setReturnConsumedCapacity(
ReturnConsumedCapacity returnConsumedCapacity) {
this.returnConsumedCapacity = returnConsumedCapacity.toString();
}
/**
* @param returnConsumedCapacity
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ReturnConsumedCapacity
*/
public UpdateItemRequest withReturnConsumedCapacity(
ReturnConsumedCapacity returnConsumedCapacity) {
setReturnConsumedCapacity(returnConsumedCapacity);
return this;
}
/**
*
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are returned
* in the response. If set to NONE (the default), no statistics
* are returned.
*
*
* @param returnItemCollectionMetrics
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are
* returned in the response. If set to NONE (the
* default), no statistics are returned.
* @see ReturnItemCollectionMetrics
*/
public void setReturnItemCollectionMetrics(
String returnItemCollectionMetrics) {
this.returnItemCollectionMetrics = returnItemCollectionMetrics;
}
/**
*
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are returned
* in the response. If set to NONE (the default), no statistics
* are returned.
*
*
* @return Determines whether item collection metrics are returned. If set
* to SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are
* returned in the response. If set to NONE (the
* default), no statistics are returned.
* @see ReturnItemCollectionMetrics
*/
public String getReturnItemCollectionMetrics() {
return this.returnItemCollectionMetrics;
}
/**
*
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are returned
* in the response. If set to NONE (the default), no statistics
* are returned.
*
*
* @param returnItemCollectionMetrics
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are
* returned in the response. If set to NONE (the
* default), no statistics are returned.
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ReturnItemCollectionMetrics
*/
public UpdateItemRequest withReturnItemCollectionMetrics(
String returnItemCollectionMetrics) {
setReturnItemCollectionMetrics(returnItemCollectionMetrics);
return this;
}
/**
*
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are returned
* in the response. If set to NONE (the default), no statistics
* are returned.
*
*
* @param returnItemCollectionMetrics
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are
* returned in the response. If set to NONE (the
* default), no statistics are returned.
* @see ReturnItemCollectionMetrics
*/
public void setReturnItemCollectionMetrics(
ReturnItemCollectionMetrics returnItemCollectionMetrics) {
this.returnItemCollectionMetrics = returnItemCollectionMetrics
.toString();
}
/**
*
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are returned
* in the response. If set to NONE (the default), no statistics
* are returned.
*
*
* @param returnItemCollectionMetrics
* Determines whether item collection metrics are returned. If set to
* SIZE, the response includes statistics about item
* collections, if any, that were modified during the operation are
* returned in the response. If set to NONE (the
* default), no statistics are returned.
* @return Returns a reference to this object so that method calls can be
* chained together.
* @see ReturnItemCollectionMetrics
*/
public UpdateItemRequest withReturnItemCollectionMetrics(
ReturnItemCollectionMetrics returnItemCollectionMetrics) {
setReturnItemCollectionMetrics(returnItemCollectionMetrics);
return this;
}
/**
*
* An expression that defines one or more attributes to be updated, the
* action to be performed on them, and new value(s) for them.
*
*
* The following action values are available for UpdateExpression.
*
*
* -
*
* SET - Adds one or more attributes and values to an item. If
* any of these attribute already exist, they are replaced by the new
* values. You can also use SET to add or subtract from an
* attribute that is of type Number. For example:
* SET myNum = myNum + :val
*
*
* SET supports the following functions:
*
*
* -
*
* if_not_exists (path, operand) - if the item does not contain
* an attribute at the specified path, then if_not_exists
* evaluates to operand; otherwise, it evaluates to path. You can use this
* function to avoid overwriting an attribute that may already be present in
* the item.
*
*
* -
*
* list_append (operand, operand) - evaluates to a list with a
* new element added to it. You can append the new element to the start or
* the end of the list by reversing the order of the operands.
*
*
*
*
* These function names are case-sensitive.
*
*
* -
*
* REMOVE - Removes one or more attributes from an item.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses
* 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute in the item, with a value of 3.
*
*
* -
*
* If the existing data type is a set and if Value is also a set,
* then Value is added to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, the Value must also be a
* set of strings.
*
*
*
*
*
* The ADD action only supports Number and set data types. In
* addition, ADD can only be used on top-level attributes, not
* nested attributes.
*
*
* -
*
* DELETE - Deletes an element from a set.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
*
* The DELETE action only supports set data types. In addition,
* DELETE can only be used on top-level attributes, not nested
* attributes.
*
*
*
*
* You can have many actions in a single expression, such as the following:
* SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
*
*
* For more information on update expressions, see Modifying Items and Attributes in the Amazon DynamoDB Developer
* Guide.
*
*
*
* UpdateExpression replaces the legacy AttributeUpdates
* parameter.
*
*
*
* @param updateExpression
* An expression that defines one or more attributes to be updated,
* the action to be performed on them, and new value(s) for them.
*
* The following action values are available for
* UpdateExpression.
*
*
* -
*
* SET - Adds one or more attributes and values to an
* item. If any of these attribute already exist, they are replaced
* by the new values. You can also use SET to add or
* subtract from an attribute that is of type Number. For example:
* SET myNum = myNum + :val
*
*
* SET supports the following functions:
*
*
* -
*
* if_not_exists (path, operand) - if the item does not
* contain an attribute at the specified path, then
* if_not_exists evaluates to operand; otherwise, it
* evaluates to path. You can use this function to avoid overwriting
* an attribute that may already be present in the item.
*
*
* -
*
* list_append (operand, operand) - evaluates to a list
* with a new element added to it. You can append the new element to
* the start or the end of the list by reversing the order of the
* operands.
*
*
*
*
* These function names are case-sensitive.
*
*
* -
*
* REMOVE - Removes one or more attributes from an item.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also
* a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute in the item, with a value of 3.
*
*
* -
*
* If the existing data type is a set and if Value is also a
* set, then Value is added to the existing set. For example,
* if the attribute value is the set [1,2], and the
* ADD action specified [3], then the final
* attribute value is [1,2,3]. An error occurs if an
* ADD action is specified for a set attribute and the
* attribute type specified does not match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, the Value must
* also be a set of strings.
*
*
*
*
*
* The ADD action only supports Number and set data
* types. In addition, ADD can only be used on top-level
* attributes, not nested attributes.
*
*
* -
*
* DELETE - Deletes an element from a set.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
*
* The DELETE action only supports set data types. In
* addition, DELETE can only be used on top-level
* attributes, not nested attributes.
*
*
*
*
* You can have many actions in a single expression, such as the
* following:
* SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
*
*
* For more information on update expressions, see Modifying Items and Attributes in the Amazon DynamoDB
* Developer Guide.
*
*
*
* UpdateExpression replaces the legacy
* AttributeUpdates parameter.
*
*/
public void setUpdateExpression(String updateExpression) {
this.updateExpression = updateExpression;
}
/**
*
* An expression that defines one or more attributes to be updated, the
* action to be performed on them, and new value(s) for them.
*
*
* The following action values are available for UpdateExpression.
*
*
* -
*
* SET - Adds one or more attributes and values to an item. If
* any of these attribute already exist, they are replaced by the new
* values. You can also use SET to add or subtract from an
* attribute that is of type Number. For example:
* SET myNum = myNum + :val
*
*
* SET supports the following functions:
*
*
* -
*
* if_not_exists (path, operand) - if the item does not contain
* an attribute at the specified path, then if_not_exists
* evaluates to operand; otherwise, it evaluates to path. You can use this
* function to avoid overwriting an attribute that may already be present in
* the item.
*
*
* -
*
* list_append (operand, operand) - evaluates to a list with a
* new element added to it. You can append the new element to the start or
* the end of the list by reversing the order of the operands.
*
*
*
*
* These function names are case-sensitive.
*
*
* -
*
* REMOVE - Removes one or more attributes from an item.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses
* 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute in the item, with a value of 3.
*
*
* -
*
* If the existing data type is a set and if Value is also a set,
* then Value is added to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, the Value must also be a
* set of strings.
*
*
*
*
*
* The ADD action only supports Number and set data types. In
* addition, ADD can only be used on top-level attributes, not
* nested attributes.
*
*
* -
*
* DELETE - Deletes an element from a set.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
*
* The DELETE action only supports set data types. In addition,
* DELETE can only be used on top-level attributes, not nested
* attributes.
*
*
*
*
* You can have many actions in a single expression, such as the following:
* SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
*
*
* For more information on update expressions, see Modifying Items and Attributes in the Amazon DynamoDB Developer
* Guide.
*
*
*
* UpdateExpression replaces the legacy AttributeUpdates
* parameter.
*
*
*
* @return An expression that defines one or more attributes to be updated,
* the action to be performed on them, and new value(s) for
* them.
*
* The following action values are available for
* UpdateExpression.
*
*
* -
*
* SET - Adds one or more attributes and values to an
* item. If any of these attribute already exist, they are replaced
* by the new values. You can also use SET to add or
* subtract from an attribute that is of type Number. For example:
* SET myNum = myNum + :val
*
*
* SET supports the following functions:
*
*
* -
*
* if_not_exists (path, operand) - if the item does not
* contain an attribute at the specified path, then
* if_not_exists evaluates to operand; otherwise, it
* evaluates to path. You can use this function to avoid overwriting
* an attribute that may already be present in the item.
*
*
* -
*
* list_append (operand, operand) - evaluates to a list
* with a new element added to it. You can append the new element to
* the start or the end of the list by reversing the order of the
* operands.
*
*
*
*
* These function names are case-sensitive.
*
*
* -
*
* REMOVE - Removes one or more attributes from an
* item.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is
* also a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute in the item, with a value of 3.
*
*
* -
*
* If the existing data type is a set and if Value is also a
* set, then Value is added to the existing set. For example,
* if the attribute value is the set [1,2], and the
* ADD action specified [3], then the
* final attribute value is [1,2,3]. An error occurs if
* an ADD action is specified for a set attribute and
* the attribute type specified does not match the existing set
* type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, the Value must
* also be a set of strings.
*
*
*
*
*
* The ADD action only supports Number and set data
* types. In addition, ADD can only be used on
* top-level attributes, not nested attributes.
*
*
* -
*
* DELETE - Deletes an element from a set.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
*
* The DELETE action only supports set data types. In
* addition, DELETE can only be used on top-level
* attributes, not nested attributes.
*
*
*
*
* You can have many actions in a single expression, such as the
* following:
* SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
*
*
* For more information on update expressions, see Modifying Items and Attributes in the Amazon DynamoDB
* Developer Guide.
*
*
*
* UpdateExpression replaces the legacy
* AttributeUpdates parameter.
*
*/
public String getUpdateExpression() {
return this.updateExpression;
}
/**
*
* An expression that defines one or more attributes to be updated, the
* action to be performed on them, and new value(s) for them.
*
*
* The following action values are available for UpdateExpression.
*
*
* -
*
* SET - Adds one or more attributes and values to an item. If
* any of these attribute already exist, they are replaced by the new
* values. You can also use SET to add or subtract from an
* attribute that is of type Number. For example:
* SET myNum = myNum + :val
*
*
* SET supports the following functions:
*
*
* -
*
* if_not_exists (path, operand) - if the item does not contain
* an attribute at the specified path, then if_not_exists
* evaluates to operand; otherwise, it evaluates to path. You can use this
* function to avoid overwriting an attribute that may already be present in
* the item.
*
*
* -
*
* list_append (operand, operand) - evaluates to a list with a
* new element added to it. You can append the new element to the start or
* the end of the list by reversing the order of the operands.
*
*
*
*
* These function names are case-sensitive.
*
*
* -
*
* REMOVE - Removes one or more attributes from an item.
*
*
* -
*
* ADD - Adds the specified value to the item, if the attribute
* does not already exist. If the attribute does exist, then the behavior of
* ADD depends on the data type of the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also a
* number, then Value is mathematically added to the existing
* attribute. If Value is a negative number, then it is subtracted
* from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number value for
* an item that doesn't exist before the update, DynamoDB uses
* 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to increment
* or decrement an attribute value that doesn't exist before the update,
* DynamoDB uses 0 as the initial value. For example, suppose
* that the item you want to update doesn't have an attribute named
* itemcount, but you decide to ADD the number
* 3 to this attribute anyway. DynamoDB will create the
* itemcount attribute, set its initial value to 0, and
* finally add 3 to it. The result will be a new
* itemcount attribute in the item, with a value of 3.
*
*
* -
*
* If the existing data type is a set and if Value is also a set,
* then Value is added to the existing set. For example, if the
* attribute value is the set [1,2], and the ADD
* action specified [3], then the final attribute value is
* [1,2,3]. An error occurs if an ADD action is
* specified for a set attribute and the attribute type specified does not
* match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if the
* existing data type is a set of strings, the Value must also be a
* set of strings.
*
*
*
*
*
* The ADD action only supports Number and set data types. In
* addition, ADD can only be used on top-level attributes, not
* nested attributes.
*
*
* -
*
* DELETE - Deletes an element from a set.
*
*
* If a set of values is specified, then those values are subtracted from
* the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is [b].
* Specifying an empty set is an error.
*
*
*
* The DELETE action only supports set data types. In addition,
* DELETE can only be used on top-level attributes, not nested
* attributes.
*
*
*
*
* You can have many actions in a single expression, such as the following:
* SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
*
*
* For more information on update expressions, see Modifying Items and Attributes in the Amazon DynamoDB Developer
* Guide.
*
*
*
* UpdateExpression replaces the legacy AttributeUpdates
* parameter.
*
*
*
* @param updateExpression
* An expression that defines one or more attributes to be updated,
* the action to be performed on them, and new value(s) for them.
*
* The following action values are available for
* UpdateExpression.
*
*
* -
*
* SET - Adds one or more attributes and values to an
* item. If any of these attribute already exist, they are replaced
* by the new values. You can also use SET to add or
* subtract from an attribute that is of type Number. For example:
* SET myNum = myNum + :val
*
*
* SET supports the following functions:
*
*
* -
*
* if_not_exists (path, operand) - if the item does not
* contain an attribute at the specified path, then
* if_not_exists evaluates to operand; otherwise, it
* evaluates to path. You can use this function to avoid overwriting
* an attribute that may already be present in the item.
*
*
* -
*
* list_append (operand, operand) - evaluates to a list
* with a new element added to it. You can append the new element to
* the start or the end of the list by reversing the order of the
* operands.
*
*
*
*
* These function names are case-sensitive.
*
*
* -
*
* REMOVE - Removes one or more attributes from an item.
*
*
* -
*
* ADD - Adds the specified value to the item, if the
* attribute does not already exist. If the attribute does exist,
* then the behavior of ADD depends on the data type of
* the attribute:
*
*
* -
*
* If the existing attribute is a number, and if Value is also
* a number, then Value is mathematically added to the
* existing attribute. If Value is a negative number, then it
* is subtracted from the existing attribute.
*
*
*
* If you use ADD to increment or decrement a number
* value for an item that doesn't exist before the update, DynamoDB
* uses 0 as the initial value.
*
*
* Similarly, if you use ADD for an existing item to
* increment or decrement an attribute value that doesn't exist
* before the update, DynamoDB uses 0 as the initial
* value. For example, suppose that the item you want to update
* doesn't have an attribute named itemcount, but you decide
* to ADD the number 3 to this attribute
* anyway. DynamoDB will create the itemcount attribute, set
* its initial value to 0, and finally add
* 3 to it. The result will be a new itemcount
* attribute in the item, with a value of 3.
*
*
* -
*
* If the existing data type is a set and if Value is also a
* set, then Value is added to the existing set. For example,
* if the attribute value is the set [1,2], and the
* ADD action specified [3], then the final
* attribute value is [1,2,3]. An error occurs if an
* ADD action is specified for a set attribute and the
* attribute type specified does not match the existing set type.
*
*
* Both sets must have the same primitive data type. For example, if
* the existing data type is a set of strings, the Value must
* also be a set of strings.
*
*
*
*
*
* The ADD action only supports Number and set data
* types. In addition, ADD can only be used on top-level
* attributes, not nested attributes.
*
*
* -
*
* DELETE - Deletes an element from a set.
*
*
* If a set of values is specified, then those values are subtracted
* from the old set. For example, if the attribute value was the set
* [a,b,c] and the DELETE action specifies
* [a,c], then the final attribute value is
* [b]. Specifying an empty set is an error.
*
*
*
* The DELETE action only supports set data types. In
* addition, DELETE can only be used on top-level
* attributes, not nested attributes.
*
*
*
*
* You can have many actions in a single expression, such as the
* following:
* SET a=:value1, b=:value2 DELETE :value3, :value4, :value5
*
*
* For more information on update expressions, see Modifying Items and Attributes in the Amazon DynamoDB
* Developer Guide.
*
*
*
* UpdateExpression replaces the legacy
* AttributeUpdates parameter.
*
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withUpdateExpression(String updateExpression) {
setUpdateExpression(updateExpression);
return this;
}
/**
*
* A condition that must be satisfied in order for a conditional update to
* succeed.
*
*
* An expression can contain any of the following:
*
*
* -
*
* Functions:
* attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size
*
*
* These function names are case-sensitive.
*
*
* -
*
* Comparison operators:
* = | | | | = | = | BETWEEN | IN
*
*
* -
*
* Logical operators: AND | OR | NOT
*
*
*
*
* For more information on condition expressions, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*
*
* ConditionExpression replaces the legacy ConditionalOperator
* and Expected parameters.
*
*
*
* @param conditionExpression
* A condition that must be satisfied in order for a conditional
* update to succeed.
*
* An expression can contain any of the following:
*
*
* -
*
* Functions:
* attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size
*
*
* These function names are case-sensitive.
*
*
* -
*
* Comparison operators:
* = | | | | = | = | BETWEEN | IN
*
*
* -
*
* Logical operators: AND | OR | NOT
*
*
*
*
* For more information on condition expressions, see Specifying Conditions in the Amazon DynamoDB Developer
* Guide.
*
*
*
* ConditionExpression replaces the legacy
* ConditionalOperator and Expected parameters.
*
*/
public void setConditionExpression(String conditionExpression) {
this.conditionExpression = conditionExpression;
}
/**
*
* A condition that must be satisfied in order for a conditional update to
* succeed.
*
*
* An expression can contain any of the following:
*
*
* -
*
* Functions:
* attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size
*
*
* These function names are case-sensitive.
*
*
* -
*
* Comparison operators:
* = | | | | = | = | BETWEEN | IN
*
*
* -
*
* Logical operators: AND | OR | NOT
*
*
*
*
* For more information on condition expressions, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*
*
* ConditionExpression replaces the legacy ConditionalOperator
* and Expected parameters.
*
*
*
* @return A condition that must be satisfied in order for a conditional
* update to succeed.
*
* An expression can contain any of the following:
*
*
* -
*
* Functions:
* attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size
*
*
* These function names are case-sensitive.
*
*
* -
*
* Comparison operators:
* = | | | | = | = | BETWEEN | IN
*
*
* -
*
* Logical operators: AND | OR | NOT
*
*
*
*
* For more information on condition expressions, see Specifying Conditions in the Amazon DynamoDB Developer
* Guide.
*
*
*
* ConditionExpression replaces the legacy
* ConditionalOperator and Expected parameters.
*
*/
public String getConditionExpression() {
return this.conditionExpression;
}
/**
*
* A condition that must be satisfied in order for a conditional update to
* succeed.
*
*
* An expression can contain any of the following:
*
*
* -
*
* Functions:
* attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size
*
*
* These function names are case-sensitive.
*
*
* -
*
* Comparison operators:
* = | | | | = | = | BETWEEN | IN
*
*
* -
*
* Logical operators: AND | OR | NOT
*
*
*
*
* For more information on condition expressions, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*
*
* ConditionExpression replaces the legacy ConditionalOperator
* and Expected parameters.
*
*
*
* @param conditionExpression
* A condition that must be satisfied in order for a conditional
* update to succeed.
*
* An expression can contain any of the following:
*
*
* -
*
* Functions:
* attribute_exists | attribute_not_exists | attribute_type | contains | begins_with | size
*
*
* These function names are case-sensitive.
*
*
* -
*
* Comparison operators:
* = | | | | = | = | BETWEEN | IN
*
*
* -
*
* Logical operators: AND | OR | NOT
*
*
*
*
* For more information on condition expressions, see Specifying Conditions in the Amazon DynamoDB Developer
* Guide.
*
*
*
* ConditionExpression replaces the legacy
* ConditionalOperator and Expected parameters.
*
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withConditionExpression(String conditionExpression) {
setConditionExpression(conditionExpression);
return this;
}
/**
*
* One or more substitution tokens for attribute names in an expression. The
* following are some use cases for using ExpressionAttributeNames:
*
*
* -
*
* To access an attribute whose name conflicts with a DynamoDB reserved
* word.
*
*
* -
*
* To create a placeholder for repeating occurrences of an attribute name in
* an expression.
*
*
* -
*
* To prevent special characters in an attribute name from being
* misinterpreted in an expression.
*
*
*
*
* Use the # character in an expression to dereference an attribute
* name. For example, consider the following attribute name:
*
*
* -
*
* Percentile
*
*
*
*
* The name of this attribute conflicts with a reserved word, so it cannot
* be used directly in an expression. (For the complete list of reserved
* words, see Reserved Words in the Amazon DynamoDB Developer Guide). To
* work around this, you could specify the following for
* ExpressionAttributeNames:
*
*
* -
*
* {"#P":"Percentile"}
*
*
*
*
* You could then use this substitution in an expression, as in this
* example:
*
*
* -
*
* #P = :val
*
*
*
*
*
* Tokens that begin with the : character are expression attribute
* values, which are placeholders for the actual value at runtime.
*
*
*
* For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer
* Guide.
*
*
* @return One or more substitution tokens for attribute names in an
* expression. The following are some use cases for using
* ExpressionAttributeNames:
*
* -
*
* To access an attribute whose name conflicts with a DynamoDB
* reserved word.
*
*
* -
*
* To create a placeholder for repeating occurrences of an attribute
* name in an expression.
*
*
* -
*
* To prevent special characters in an attribute name from being
* misinterpreted in an expression.
*
*
*
*
* Use the # character in an expression to dereference an
* attribute name. For example, consider the following attribute
* name:
*
*
* -
*
* Percentile
*
*
*
*
* The name of this attribute conflicts with a reserved word, so it
* cannot be used directly in an expression. (For the complete list
* of reserved words, see Reserved Words in the Amazon DynamoDB Developer
* Guide). To work around this, you could specify the following
* for ExpressionAttributeNames:
*
*
* -
*
* {"#P":"Percentile"}
*
*
*
*
* You could then use this substitution in an expression, as in this
* example:
*
*
* -
*
* #P = :val
*
*
*
*
*
* Tokens that begin with the : character are expression
* attribute values, which are placeholders for the actual value
* at runtime.
*
*
*
* For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB
* Developer Guide.
*/
public java.util.Map getExpressionAttributeNames() {
return expressionAttributeNames;
}
/**
*
* One or more substitution tokens for attribute names in an expression. The
* following are some use cases for using ExpressionAttributeNames:
*
*
* -
*
* To access an attribute whose name conflicts with a DynamoDB reserved
* word.
*
*
* -
*
* To create a placeholder for repeating occurrences of an attribute name in
* an expression.
*
*
* -
*
* To prevent special characters in an attribute name from being
* misinterpreted in an expression.
*
*
*
*
* Use the # character in an expression to dereference an attribute
* name. For example, consider the following attribute name:
*
*
* -
*
* Percentile
*
*
*
*
* The name of this attribute conflicts with a reserved word, so it cannot
* be used directly in an expression. (For the complete list of reserved
* words, see Reserved Words in the Amazon DynamoDB Developer Guide). To
* work around this, you could specify the following for
* ExpressionAttributeNames:
*
*
* -
*
* {"#P":"Percentile"}
*
*
*
*
* You could then use this substitution in an expression, as in this
* example:
*
*
* -
*
* #P = :val
*
*
*
*
*
* Tokens that begin with the : character are expression attribute
* values, which are placeholders for the actual value at runtime.
*
*
*
* For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer
* Guide.
*
*
* @param expressionAttributeNames
* One or more substitution tokens for attribute names in an
* expression. The following are some use cases for using
* ExpressionAttributeNames:
*
* -
*
* To access an attribute whose name conflicts with a DynamoDB
* reserved word.
*
*
* -
*
* To create a placeholder for repeating occurrences of an attribute
* name in an expression.
*
*
* -
*
* To prevent special characters in an attribute name from being
* misinterpreted in an expression.
*
*
*
*
* Use the # character in an expression to dereference an
* attribute name. For example, consider the following attribute
* name:
*
*
* -
*
* Percentile
*
*
*
*
* The name of this attribute conflicts with a reserved word, so it
* cannot be used directly in an expression. (For the complete list
* of reserved words, see Reserved Words in the Amazon DynamoDB Developer
* Guide). To work around this, you could specify the following
* for ExpressionAttributeNames:
*
*
* -
*
* {"#P":"Percentile"}
*
*
*
*
* You could then use this substitution in an expression, as in this
* example:
*
*
* -
*
* #P = :val
*
*
*
*
*
* Tokens that begin with the : character are expression
* attribute values, which are placeholders for the actual value
* at runtime.
*
*
*
* For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer
* Guide.
*/
public void setExpressionAttributeNames(
java.util.Map expressionAttributeNames) {
this.expressionAttributeNames = expressionAttributeNames;
}
/**
*
* One or more substitution tokens for attribute names in an expression. The
* following are some use cases for using ExpressionAttributeNames:
*
*
* -
*
* To access an attribute whose name conflicts with a DynamoDB reserved
* word.
*
*
* -
*
* To create a placeholder for repeating occurrences of an attribute name in
* an expression.
*
*
* -
*
* To prevent special characters in an attribute name from being
* misinterpreted in an expression.
*
*
*
*
* Use the # character in an expression to dereference an attribute
* name. For example, consider the following attribute name:
*
*
* -
*
* Percentile
*
*
*
*
* The name of this attribute conflicts with a reserved word, so it cannot
* be used directly in an expression. (For the complete list of reserved
* words, see Reserved Words in the Amazon DynamoDB Developer Guide). To
* work around this, you could specify the following for
* ExpressionAttributeNames:
*
*
* -
*
* {"#P":"Percentile"}
*
*
*
*
* You could then use this substitution in an expression, as in this
* example:
*
*
* -
*
* #P = :val
*
*
*
*
*
* Tokens that begin with the : character are expression attribute
* values, which are placeholders for the actual value at runtime.
*
*
*
* For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer
* Guide.
*
*
* @param expressionAttributeNames
* One or more substitution tokens for attribute names in an
* expression. The following are some use cases for using
* ExpressionAttributeNames:
*
* -
*
* To access an attribute whose name conflicts with a DynamoDB
* reserved word.
*
*
* -
*
* To create a placeholder for repeating occurrences of an attribute
* name in an expression.
*
*
* -
*
* To prevent special characters in an attribute name from being
* misinterpreted in an expression.
*
*
*
*
* Use the # character in an expression to dereference an
* attribute name. For example, consider the following attribute
* name:
*
*
* -
*
* Percentile
*
*
*
*
* The name of this attribute conflicts with a reserved word, so it
* cannot be used directly in an expression. (For the complete list
* of reserved words, see Reserved Words in the Amazon DynamoDB Developer
* Guide). To work around this, you could specify the following
* for ExpressionAttributeNames:
*
*
* -
*
* {"#P":"Percentile"}
*
*
*
*
* You could then use this substitution in an expression, as in this
* example:
*
*
* -
*
* #P = :val
*
*
*
*
*
* Tokens that begin with the : character are expression
* attribute values, which are placeholders for the actual value
* at runtime.
*
*
*
* For more information on expression attribute names, see Accessing Item Attributes in the Amazon DynamoDB Developer
* Guide.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withExpressionAttributeNames(
java.util.Map expressionAttributeNames) {
setExpressionAttributeNames(expressionAttributeNames);
return this;
}
public UpdateItemRequest addExpressionAttributeNamesEntry(String key,
String value) {
if (null == this.expressionAttributeNames) {
this.expressionAttributeNames = new java.util.HashMap();
}
if (this.expressionAttributeNames.containsKey(key))
throw new IllegalArgumentException("Duplicated keys ("
+ key.toString() + ") are provided.");
this.expressionAttributeNames.put(key, value);
return this;
}
/**
* Removes all the entries added into ExpressionAttributeNames. <p>
* Returns a reference to this object so that method calls can be chained
* together.
*/
public UpdateItemRequest clearExpressionAttributeNamesEntries() {
this.expressionAttributeNames = null;
return this;
}
/**
*
* One or more values that can be substituted in an expression.
*
*
* Use the : (colon) character in an expression to dereference an
* attribute value. For example, suppose that you wanted to check whether
* the value of the ProductStatus attribute was one of the following:
*
*
* Available | Backordered | Discontinued
*
*
* You would first need to specify ExpressionAttributeValues as
* follows:
*
*
* { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
*
*
* You could then use these values in an expression, such as this:
*
*
* ProductStatus IN (:avail, :back, :disc)
*
*
* For more information on expression attribute values, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*
* @return One or more values that can be substituted in an expression.
*
* Use the : (colon) character in an expression to
* dereference an attribute value. For example, suppose that you
* wanted to check whether the value of the ProductStatus
* attribute was one of the following:
*
*
* Available | Backordered | Discontinued
*
*
* You would first need to specify ExpressionAttributeValues
* as follows:
*
*
* { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
*
*
* You could then use these values in an expression, such as this:
*
*
* ProductStatus IN (:avail, :back, :disc)
*
*
* For more information on expression attribute values, see Specifying Conditions in the Amazon DynamoDB Developer
* Guide.
*/
public java.util.Map getExpressionAttributeValues() {
return expressionAttributeValues;
}
/**
*
* One or more values that can be substituted in an expression.
*
*
* Use the : (colon) character in an expression to dereference an
* attribute value. For example, suppose that you wanted to check whether
* the value of the ProductStatus attribute was one of the following:
*
*
* Available | Backordered | Discontinued
*
*
* You would first need to specify ExpressionAttributeValues as
* follows:
*
*
* { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
*
*
* You could then use these values in an expression, such as this:
*
*
* ProductStatus IN (:avail, :back, :disc)
*
*
* For more information on expression attribute values, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*
* @param expressionAttributeValues
* One or more values that can be substituted in an expression.
*
* Use the : (colon) character in an expression to dereference
* an attribute value. For example, suppose that you wanted to check
* whether the value of the ProductStatus attribute was one of
* the following:
*
*
* Available | Backordered | Discontinued
*
*
* You would first need to specify ExpressionAttributeValues
* as follows:
*
*
* { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
*
*
* You could then use these values in an expression, such as this:
*
*
* ProductStatus IN (:avail, :back, :disc)
*
*
* For more information on expression attribute values, see Specifying Conditions in the Amazon DynamoDB Developer
* Guide.
*/
public void setExpressionAttributeValues(
java.util.Map expressionAttributeValues) {
this.expressionAttributeValues = expressionAttributeValues;
}
/**
*
* One or more values that can be substituted in an expression.
*
*
* Use the : (colon) character in an expression to dereference an
* attribute value. For example, suppose that you wanted to check whether
* the value of the ProductStatus attribute was one of the following:
*
*
* Available | Backordered | Discontinued
*
*
* You would first need to specify ExpressionAttributeValues as
* follows:
*
*
* { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
*
*
* You could then use these values in an expression, such as this:
*
*
* ProductStatus IN (:avail, :back, :disc)
*
*
* For more information on expression attribute values, see Specifying Conditions in the Amazon DynamoDB Developer Guide.
*
*
* @param expressionAttributeValues
* One or more values that can be substituted in an expression.
*
* Use the : (colon) character in an expression to dereference
* an attribute value. For example, suppose that you wanted to check
* whether the value of the ProductStatus attribute was one of
* the following:
*
*
* Available | Backordered | Discontinued
*
*
* You would first need to specify ExpressionAttributeValues
* as follows:
*
*
* { ":avail":{"S":"Available"}, ":back":{"S":"Backordered"}, ":disc":{"S":"Discontinued"} }
*
*
* You could then use these values in an expression, such as this:
*
*
* ProductStatus IN (:avail, :back, :disc)
*
*
* For more information on expression attribute values, see Specifying Conditions in the Amazon DynamoDB Developer
* Guide.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public UpdateItemRequest withExpressionAttributeValues(
java.util.Map expressionAttributeValues) {
setExpressionAttributeValues(expressionAttributeValues);
return this;
}
public UpdateItemRequest addExpressionAttributeValuesEntry(String key,
AttributeValue value) {
if (null == this.expressionAttributeValues) {
this.expressionAttributeValues = new java.util.HashMap();
}
if (this.expressionAttributeValues.containsKey(key))
throw new IllegalArgumentException("Duplicated keys ("
+ key.toString() + ") are provided.");
this.expressionAttributeValues.put(key, value);
return this;
}
/**
* Removes all the entries added into ExpressionAttributeValues. <p>
* Returns a reference to this object so that method calls can be chained
* together.
*/
public UpdateItemRequest clearExpressionAttributeValuesEntries() {
this.expressionAttributeValues = null;
return this;
}
/**
* Set the hash and range key attributes of the item.
*
* For a hash-only table, you only need to provide the hash attribute. For a
* hash-and-range table, you must provide both.
*
* @param hashKey
* a map entry including the name and value of the primary hash key.
* @param rangeKey
* a map entry including the name and value of the primary range key,
* or null if it is a hash-only table.
*/
public void setKey(java.util.Map.Entry hashKey,
java.util.Map.Entry rangeKey)
throws IllegalArgumentException {
java.util.HashMap key = new java.util.HashMap();
if (hashKey != null) {
key.put(hashKey.getKey(), hashKey.getValue());
} else {
throw new IllegalArgumentException(
"hashKey must be non-null object.");
}
if (rangeKey != null) {
key.put(rangeKey.getKey(), rangeKey.getValue());
}
setKey(key);
}
/**
* Set the hash and range key attributes of the item.
*
* For a hash-only table, you only need to provide the hash attribute. For a
* hash-and-range table, you must provide both.
*
* Returns a reference to this object so that method calls can be chained
* together.
*
* @param hashKey
* a map entry including the name and value of the primary hash key.
* @param rangeKey
* a map entry including the name and value of the primary range key,
* or null if it is a hash-only table.
*/
public UpdateItemRequest withKey(
java.util.Map.Entry hashKey,
java.util.Map.Entry rangeKey)
throws IllegalArgumentException {
setKey(hashKey, rangeKey);
return this;
}
/**
* Returns a string representation of this object; useful for testing and
* debugging.
*
* @return A string representation of this object.
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("{");
if (getTableName() != null)
sb.append("TableName: " + getTableName() + ",");
if (getKey() != null)
sb.append("Key: " + getKey() + ",");
if (getAttributeUpdates() != null)
sb.append("AttributeUpdates: " + getAttributeUpdates() + ",");
if (getExpected() != null)
sb.append("Expected: " + getExpected() + ",");
if (getConditionalOperator() != null)
sb.append("ConditionalOperator: " + getConditionalOperator() + ",");
if (getReturnValues() != null)
sb.append("ReturnValues: " + getReturnValues() + ",");
if (getReturnConsumedCapacity() != null)
sb.append("ReturnConsumedCapacity: " + getReturnConsumedCapacity()
+ ",");
if (getReturnItemCollectionMetrics() != null)
sb.append("ReturnItemCollectionMetrics: "
+ getReturnItemCollectionMetrics() + ",");
if (getUpdateExpression() != null)
sb.append("UpdateExpression: " + getUpdateExpression() + ",");
if (getConditionExpression() != null)
sb.append("ConditionExpression: " + getConditionExpression() + ",");
if (getExpressionAttributeNames() != null)
sb.append("ExpressionAttributeNames: "
+ getExpressionAttributeNames() + ",");
if (getExpressionAttributeValues() != null)
sb.append("ExpressionAttributeValues: "
+ getExpressionAttributeValues());
sb.append("}");
return sb.toString();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (obj instanceof UpdateItemRequest == false)
return false;
UpdateItemRequest other = (UpdateItemRequest) obj;
if (other.getTableName() == null ^ this.getTableName() == null)
return false;
if (other.getTableName() != null
&& other.getTableName().equals(this.getTableName()) == false)
return false;
if (other.getKey() == null ^ this.getKey() == null)
return false;
if (other.getKey() != null
&& other.getKey().equals(this.getKey()) == false)
return false;
if (other.getAttributeUpdates() == null
^ this.getAttributeUpdates() == null)
return false;
if (other.getAttributeUpdates() != null
&& other.getAttributeUpdates().equals(
this.getAttributeUpdates()) == false)
return false;
if (other.getExpected() == null ^ this.getExpected() == null)
return false;
if (other.getExpected() != null
&& other.getExpected().equals(this.getExpected()) == false)
return false;
if (other.getConditionalOperator() == null
^ this.getConditionalOperator() == null)
return false;
if (other.getConditionalOperator() != null
&& other.getConditionalOperator().equals(
this.getConditionalOperator()) == false)
return false;
if (other.getReturnValues() == null ^ this.getReturnValues() == null)
return false;
if (other.getReturnValues() != null
&& other.getReturnValues().equals(this.getReturnValues()) == false)
return false;
if (other.getReturnConsumedCapacity() == null
^ this.getReturnConsumedCapacity() == null)
return false;
if (other.getReturnConsumedCapacity() != null
&& other.getReturnConsumedCapacity().equals(
this.getReturnConsumedCapacity()) == false)
return false;
if (other.getReturnItemCollectionMetrics() == null
^ this.getReturnItemCollectionMetrics() == null)
return false;
if (other.getReturnItemCollectionMetrics() != null
&& other.getReturnItemCollectionMetrics().equals(
this.getReturnItemCollectionMetrics()) == false)
return false;
if (other.getUpdateExpression() == null
^ this.getUpdateExpression() == null)
return false;
if (other.getUpdateExpression() != null
&& other.getUpdateExpression().equals(
this.getUpdateExpression()) == false)
return false;
if (other.getConditionExpression() == null
^ this.getConditionExpression() == null)
return false;
if (other.getConditionExpression() != null
&& other.getConditionExpression().equals(
this.getConditionExpression()) == false)
return false;
if (other.getExpressionAttributeNames() == null
^ this.getExpressionAttributeNames() == null)
return false;
if (other.getExpressionAttributeNames() != null
&& other.getExpressionAttributeNames().equals(
this.getExpressionAttributeNames()) == false)
return false;
if (other.getExpressionAttributeValues() == null
^ this.getExpressionAttributeValues() == null)
return false;
if (other.getExpressionAttributeValues() != null
&& other.getExpressionAttributeValues().equals(
this.getExpressionAttributeValues()) == false)
return false;
return true;
}
@Override
public int hashCode() {
final int prime = 31;
int hashCode = 1;
hashCode = prime * hashCode
+ ((getTableName() == null) ? 0 : getTableName().hashCode());
hashCode = prime * hashCode
+ ((getKey() == null) ? 0 : getKey().hashCode());
hashCode = prime
* hashCode
+ ((getAttributeUpdates() == null) ? 0 : getAttributeUpdates()
.hashCode());
hashCode = prime * hashCode
+ ((getExpected() == null) ? 0 : getExpected().hashCode());
hashCode = prime
* hashCode
+ ((getConditionalOperator() == null) ? 0
: getConditionalOperator().hashCode());
hashCode = prime
* hashCode
+ ((getReturnValues() == null) ? 0 : getReturnValues()
.hashCode());
hashCode = prime
* hashCode
+ ((getReturnConsumedCapacity() == null) ? 0
: getReturnConsumedCapacity().hashCode());
hashCode = prime
* hashCode
+ ((getReturnItemCollectionMetrics() == null) ? 0
: getReturnItemCollectionMetrics().hashCode());
hashCode = prime
* hashCode
+ ((getUpdateExpression() == null) ? 0 : getUpdateExpression()
.hashCode());
hashCode = prime
* hashCode
+ ((getConditionExpression() == null) ? 0
: getConditionExpression().hashCode());
hashCode = prime
* hashCode
+ ((getExpressionAttributeNames() == null) ? 0
: getExpressionAttributeNames().hashCode());
hashCode = prime
* hashCode
+ ((getExpressionAttributeValues() == null) ? 0
: getExpressionAttributeValues().hashCode());
return hashCode;
}
@Override
public UpdateItemRequest clone() {
return (UpdateItemRequest) super.clone();
}
}