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/*
* Copyright 2010-2014 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;
/**
* Container for the parameters to the {@link com.amazonaws.services.dynamodbv2.AmazonDynamoDB#scan(ScanRequest) Scan operation}.
*
* The Scan operation returns one or more items and item
* attributes by accessing every item in the table. To have DynamoDB
* return fewer items, you can provide a ScanFilter .
*
*
* If the total number of scanned items exceeds the maximum data set size
* limit of 1 MB, the scan stops and results are returned to the user
* with a LastEvaluatedKey to continue the scan in a subsequent
* operation. The results also include the number of items exceeding the
* limit. A scan can result in no table data meeting the filter criteria.
*
*
* The result set is eventually consistent.
*
*
* By default, Scan operations proceed sequentially; however, for
* faster performance on large tables, applications can request a
* parallel Scan by specifying the Segment and
* TotalSegments parameters. For more information, see
* Parallel Scan
* in the Amazon DynamoDB Developer Guide.
*
*
* @see com.amazonaws.services.dynamodbv2.AmazonDynamoDB#scan(ScanRequest)
*/
public class ScanRequest extends AmazonWebServiceRequest implements Serializable {
/**
* The name of the table containing the requested items.
*
* Constraints:
* Length: 3 - 255
* Pattern: [a-zA-Z0-9_.-]+
*/
private String tableName;
/**
* The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*
* Constraints:
* Length: 1 -
*/
private com.amazonaws.internal.ListWithAutoConstructFlag attributesToGet;
/**
* The maximum number of items to evaluate (not necessarily the number of
* matching items). If DynamoDB processes the number of items up to the
* limit while processing the results, it stops the operation and returns
* the matching values up to that point, and a LastEvaluatedKey to
* apply in a subsequent operation, so that you can pick up where you
* left off. Also, if the processed data set size exceeds 1 MB before
* DynamoDB reaches this limit, it stops the operation and returns the
* matching values up to the limit, and a LastEvaluatedKey to
* apply in a subsequent operation to continue the operation. For more
* information see Query
* and Scan in the Amazon DynamoDB Developer Guide.
*
* Constraints:
* Range: 1 -
*/
private Integer limit;
/**
* The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* Constraints:
* Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
*/
private String select;
/**
* Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results.
Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*/
private java.util.Map scanFilter;
/**
* The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation. The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*/
private java.util.Map exclusiveStartKey;
/**
* If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* Constraints:
* Allowed Values: INDEXES, TOTAL, NONE
*/
private String returnConsumedCapacity;
/**
* For a parallel Scan request, TotalSegments represents
* the total number of segments into which the Scan operation will
* be divided. The value of TotalSegments corresponds to the
* number of application workers that will perform the parallel scan. For
* example, if you want to scan a table using four application threads,
* you would specify a TotalSegments value of 4.
The value for
* TotalSegments must be greater than or equal to 1, and less than
* or equal to 4096. If you specify a TotalSegments value of 1,
* the Scan will be sequential rather than parallel.
If you
* specify TotalSegments, you must also specify Segment.
*
* Constraints:
* Range: 1 - 4096
*/
private Integer totalSegments;
/**
* For a parallel Scan request, Segment identifies an
* individual segment to be scanned by an application worker.
Segment
* IDs are zero-based, so the first segment is always 0. For example, if
* you want to scan a table using four application threads, the first
* thread would specify a Segment value of 0, the second thread
* would specify 1, and so on.
The value of LastEvaluatedKey
* returned from a parallel Scan request must be used as
* ExclusiveStartKey with the same Segment ID in a subsequent
* Scan operation.
The value for Segment must be greater
* than or equal to 0, and less than the value provided for
* TotalSegments.
If you specify Segment, you must also
* specify TotalSegments.
*
* Constraints:
* Range: 0 - 4095
*/
private Integer segment;
/**
* Default constructor for a new ScanRequest object. Callers should use the
* setter or fluent setter (with...) methods to initialize this object after creating it.
*/
public ScanRequest() {}
/**
* Constructs a new ScanRequest 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 requested items.
*/
public ScanRequest(String tableName) {
setTableName(tableName);
}
/**
* The name of the table containing the requested items.
*
* Constraints:
* Length: 3 - 255
* Pattern: [a-zA-Z0-9_.-]+
*
* @return The name of the table containing the requested items.
*/
public String getTableName() {
return tableName;
}
/**
* The name of the table containing the requested items.
*
* Constraints:
* Length: 3 - 255
* Pattern: [a-zA-Z0-9_.-]+
*
* @param tableName The name of the table containing the requested items.
*/
public void setTableName(String tableName) {
this.tableName = tableName;
}
/**
* The name of the table containing the requested items.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Length: 3 - 255
* Pattern: [a-zA-Z0-9_.-]+
*
* @param tableName The name of the table containing the requested items.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withTableName(String tableName) {
this.tableName = tableName;
return this;
}
/**
* The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*
* Constraints:
* Length: 1 -
*
* @return The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*/
public java.util.List getAttributesToGet() {
return attributesToGet;
}
/**
* The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*
* Constraints:
* Length: 1 -
*
* @param attributesToGet The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*/
public void setAttributesToGet(java.util.Collection attributesToGet) {
if (attributesToGet == null) {
this.attributesToGet = null;
return;
}
com.amazonaws.internal.ListWithAutoConstructFlag attributesToGetCopy = new com.amazonaws.internal.ListWithAutoConstructFlag(attributesToGet.size());
attributesToGetCopy.addAll(attributesToGet);
this.attributesToGet = attributesToGetCopy;
}
/**
* The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Length: 1 -
*
* @param attributesToGet The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withAttributesToGet(String... attributesToGet) {
if (getAttributesToGet() == null) setAttributesToGet(new java.util.ArrayList(attributesToGet.length));
for (String value : attributesToGet) {
getAttributesToGet().add(value);
}
return this;
}
/**
* The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Length: 1 -
*
* @param attributesToGet The names of one or more attributes to retrieve. If no attribute names
* are specified, then all attributes will be returned. If any of the
* requested attributes are not found, they will not appear in the
* result.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withAttributesToGet(java.util.Collection attributesToGet) {
if (attributesToGet == null) {
this.attributesToGet = null;
} else {
com.amazonaws.internal.ListWithAutoConstructFlag attributesToGetCopy = new com.amazonaws.internal.ListWithAutoConstructFlag(attributesToGet.size());
attributesToGetCopy.addAll(attributesToGet);
this.attributesToGet = attributesToGetCopy;
}
return this;
}
/**
* The maximum number of items to evaluate (not necessarily the number of
* matching items). If DynamoDB processes the number of items up to the
* limit while processing the results, it stops the operation and returns
* the matching values up to that point, and a LastEvaluatedKey to
* apply in a subsequent operation, so that you can pick up where you
* left off. Also, if the processed data set size exceeds 1 MB before
* DynamoDB reaches this limit, it stops the operation and returns the
* matching values up to the limit, and a LastEvaluatedKey to
* apply in a subsequent operation to continue the operation. For more
* information see Query
* and Scan in the Amazon DynamoDB Developer Guide.
*
* Constraints:
* Range: 1 -
*
* @return The maximum number of items to evaluate (not necessarily the number of
* matching items). If DynamoDB processes the number of items up to the
* limit while processing the results, it stops the operation and returns
* the matching values up to that point, and a LastEvaluatedKey to
* apply in a subsequent operation, so that you can pick up where you
* left off. Also, if the processed data set size exceeds 1 MB before
* DynamoDB reaches this limit, it stops the operation and returns the
* matching values up to the limit, and a LastEvaluatedKey to
* apply in a subsequent operation to continue the operation. For more
* information see Query
* and Scan in the Amazon DynamoDB Developer Guide.
*/
public Integer getLimit() {
return limit;
}
/**
* The maximum number of items to evaluate (not necessarily the number of
* matching items). If DynamoDB processes the number of items up to the
* limit while processing the results, it stops the operation and returns
* the matching values up to that point, and a LastEvaluatedKey to
* apply in a subsequent operation, so that you can pick up where you
* left off. Also, if the processed data set size exceeds 1 MB before
* DynamoDB reaches this limit, it stops the operation and returns the
* matching values up to the limit, and a LastEvaluatedKey to
* apply in a subsequent operation to continue the operation. For more
* information see Query
* and Scan in the Amazon DynamoDB Developer Guide.
*
* Constraints:
* Range: 1 -
*
* @param limit The maximum number of items to evaluate (not necessarily the number of
* matching items). If DynamoDB processes the number of items up to the
* limit while processing the results, it stops the operation and returns
* the matching values up to that point, and a LastEvaluatedKey to
* apply in a subsequent operation, so that you can pick up where you
* left off. Also, if the processed data set size exceeds 1 MB before
* DynamoDB reaches this limit, it stops the operation and returns the
* matching values up to the limit, and a LastEvaluatedKey to
* apply in a subsequent operation to continue the operation. For more
* information see Query
* and Scan in the Amazon DynamoDB Developer Guide.
*/
public void setLimit(Integer limit) {
this.limit = limit;
}
/**
* The maximum number of items to evaluate (not necessarily the number of
* matching items). If DynamoDB processes the number of items up to the
* limit while processing the results, it stops the operation and returns
* the matching values up to that point, and a LastEvaluatedKey to
* apply in a subsequent operation, so that you can pick up where you
* left off. Also, if the processed data set size exceeds 1 MB before
* DynamoDB reaches this limit, it stops the operation and returns the
* matching values up to the limit, and a LastEvaluatedKey to
* apply in a subsequent operation to continue the operation. For more
* information see Query
* and Scan in the Amazon DynamoDB Developer Guide.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Range: 1 -
*
* @param limit The maximum number of items to evaluate (not necessarily the number of
* matching items). If DynamoDB processes the number of items up to the
* limit while processing the results, it stops the operation and returns
* the matching values up to that point, and a LastEvaluatedKey to
* apply in a subsequent operation, so that you can pick up where you
* left off. Also, if the processed data set size exceeds 1 MB before
* DynamoDB reaches this limit, it stops the operation and returns the
* matching values up to the limit, and a LastEvaluatedKey to
* apply in a subsequent operation to continue the operation. For more
* information see Query
* and Scan in the Amazon DynamoDB Developer Guide.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withLimit(Integer limit) {
this.limit = limit;
return this;
}
/**
* The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* Constraints:
* Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
*
* @return The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* @see Select
*/
public String getSelect() {
return select;
}
/**
* The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* Constraints:
* Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
*
* @param select The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* @see Select
*/
public void setSelect(String select) {
this.select = select;
}
/**
* The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
*
* @param select The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* @return A reference to this updated object so that method calls can be chained
* together.
*
* @see Select
*/
public ScanRequest withSelect(String select) {
this.select = select;
return this;
}
/**
* The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* Constraints:
* Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
*
* @param select The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* @see Select
*/
public void setSelect(Select select) {
this.select = select.toString();
}
/**
* The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Allowed Values: ALL_ATTRIBUTES, ALL_PROJECTED_ATTRIBUTES, SPECIFIC_ATTRIBUTES, COUNT
*
* @param select The attributes to be returned in the result. You can retrieve all item
* attributes, specific item attributes, or the count of matching items.
*
-
ALL_ATTRIBUTES: Returns all of the item
* attributes.
-
COUNT: Returns the number of
* matching items, rather than the matching items themselves.
-
*
SPECIFIC_ATTRIBUTES : Returns only the attributes
* listed in AttributesToGet. This is equivalent to specifying
* AttributesToGet without specifying any value for Select.
*
If neither Select nor AttributesToGet are
* specified, DynamoDB defaults to ALL_ATTRIBUTES. You
* cannot use both Select and AttributesToGet together in a
* single request, unless the value for Select is
* SPECIFIC_ATTRIBUTES. (This usage is equivalent to
* specifying AttributesToGet without any value for
* Select.)
*
* @return A reference to this updated object so that method calls can be chained
* together.
*
* @see Select
*/
public ScanRequest withSelect(Select select) {
this.select = select.toString();
return this;
}
/**
* Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results.
Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*
* @return Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results. Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*/
public java.util.Map getScanFilter() {
return scanFilter;
}
/**
* Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results. Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*
* @param scanFilter Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results. Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*/
public void setScanFilter(java.util.Map scanFilter) {
this.scanFilter = scanFilter;
}
/**
* Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results. Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*
* Returns a reference to this object so that method calls can be chained together.
*
* @param scanFilter Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results.
Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withScanFilter(java.util.Map scanFilter) {
setScanFilter(scanFilter);
return this;
}
/**
* Evaluates the scan results and returns only the desired values.
* Multiple conditions are treated as "AND" operations: all conditions
* must be met to be included in the results. Each
* ScanConditions element consists of an attribute name to
* compare, along with the following:
* AttributeValueList - One or more values to evaluate
* against the supplied attribute. This list contains exactly one value,
* except for a BETWEEN or IN comparison, in
* which case the list contains two values. 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
* aa is greater than B. For a list of code
* values, see http://en.wikipedia.org/wiki/ASCII#ASCII_printable_characters.
*
For Binary, DynamoDB treats each byte of the binary data as
* unsigned when it compares binary values, for example when evaluating
* query expressions.
ComparisonOperator - A
* comparator for evaluating attributes. For example, equals, greater
* than, less than, etc.
Valid comparison operators for Scan:
*
EQ | NE | LE | LT | GE | GT | NOT_NULL | NULL | CONTAINS |
* NOT_CONTAINS | BEGINS_WITH | IN | BETWEEN
For information on
* specifying data types in JSON, see JSON
* Data Format in the Amazon DynamoDB Developer Guide.
The
* following are descriptions of each comparison operator.
-
*
EQ : Equal.
AttributeValueList can contain
* only one AttributeValue of type String, Number, or Binary (not
* a set). If an item contains an AttributeValue of a different
* type than the one specified 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.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or
* Binary (not a set). If an item contains an AttributeValue of a
* different type than the one specified 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). If an item contains an AttributeValue of a
* different type than the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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 of type String, Number, or Binary (not a set).
* If an item contains an AttributeValue of a different type than
* the one specified 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.
-
NULL : The attribute does
* not exist.
-
CONTAINS : checks for a
* subsequence, or value in a set.
AttributeValueList can
* contain only one AttributeValue of type String, Number, or
* Binary (not a set). If the target attribute of the comparison is a
* String, then the operation checks for a substring match. If the target
* attribute of the comparison is Binary, then the operation 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
* operation checks for a member of the set (not as a substring).
* -
NOT_CONTAINS : checks for absence of a
* subsequence, or absence of a value in a set.
*
AttributeValueList can contain only one
* AttributeValue of type String, Number, or Binary (not a set).
* If the target attribute of the comparison is a String, then the
* operation checks for the absence of a substring match. If the target
* attribute of the comparison is Binary, then the operation 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 operation checks for the absence of a member of the set (not
* as a substring).
-
BEGINS_WITH : checks for a
* prefix.
AttributeValueList can contain only one
* AttributeValue of type String or Binary (not a Number or a
* set). The target attribute of the comparison must be a String or
* Binary (not a Number or a set).
-
IN :
* checks for exact matches.
AttributeValueList can contain
* more than one AttributeValue of type String, Number, or Binary
* (not a set). The target attribute of the comparison must be of the
* same type and exact value to match. A String never matches a String
* set.
-
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). 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 of a different
* type than the one specified 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"]}
*
* The method adds a new key-value pair into ScanFilter parameter, and
* returns a reference to this object so that method calls can be chained
* together.
*
* @param key The key of the entry to be added into ScanFilter.
* @param value The corresponding value of the entry to be added into ScanFilter.
*/
public ScanRequest addScanFilterEntry(String key, Condition value) {
if (null == this.scanFilter) {
this.scanFilter = new java.util.HashMap();
}
if (this.scanFilter.containsKey(key))
throw new IllegalArgumentException("Duplicated keys (" + key.toString() + ") are provided.");
this.scanFilter.put(key, value);
return this;
}
/**
* Removes all the entries added into ScanFilter.
*
* Returns a reference to this object so that method calls can be chained together.
*/
public ScanRequest clearScanFilterEntries() {
this.scanFilter = null;
return this;
}
/**
* The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation.
The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*
* @return The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation.
The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*/
public java.util.Map getExclusiveStartKey() {
return exclusiveStartKey;
}
/**
* The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation. The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*
* @param exclusiveStartKey The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation.
The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*/
public void setExclusiveStartKey(java.util.Map exclusiveStartKey) {
this.exclusiveStartKey = exclusiveStartKey;
}
/**
* The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation. The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*
* Returns a reference to this object so that method calls can be chained together.
*
* @param exclusiveStartKey The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation.
The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withExclusiveStartKey(java.util.Map exclusiveStartKey) {
setExclusiveStartKey(exclusiveStartKey);
return this;
}
/**
* The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation. The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*
* This method accepts the hashKey, rangeKey of ExclusiveStartKey as
* java.util.Map.Entry objects.
*
* @param hashKey Primary hash key.
* @param rangeKey Primary range key. (null if it a hash-only table)
*/
public void setExclusiveStartKey(java.util.Map.Entry hashKey, java.util.Map.Entry rangeKey) throws IllegalArgumentException {
java.util.HashMap exclusiveStartKey = new java.util.HashMap();
if (hashKey != null) {
exclusiveStartKey.put(hashKey.getKey(), hashKey.getValue());
} else
throw new IllegalArgumentException("hashKey must be non-null object.");
if (rangeKey != null) {
exclusiveStartKey.put(rangeKey.getKey(), rangeKey.getValue());
}
setExclusiveStartKey(exclusiveStartKey);
}
/**
* The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation. The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*
* This method accepts the hashKey, rangeKey of ExclusiveStartKey as
* java.util.Map.Entry objects.
*
* Returns a reference to this object so that method calls can be chained together.
*
* @param hashKey Primary hash key.
* @param rangeKey Primary range key. (null if it a hash-only table)
*/
public ScanRequest withExclusiveStartKey(java.util.Map.Entry hashKey, java.util.Map.Entry rangeKey) throws IllegalArgumentException {
setExclusiveStartKey(hashKey, rangeKey);
return this;
}
/**
* The primary key of the first item that this operation will evaluate.
* Use the value that was returned for LastEvaluatedKey in the
* previous operation. The data type for ExclusiveStartKey must
* be String, Number or Binary. No set data types are allowed.
In a
* parallel scan, a Scan request that includes
* ExclusiveStartKey must specify the same segment whose previous
* Scan returned the corresponding value of
* LastEvaluatedKey.
*
* The method adds a new key-value pair into ExclusiveStartKey parameter,
* and returns a reference to this object so that method calls can be
* chained together.
*
* @param key The key of the entry to be added into ExclusiveStartKey.
* @param value The corresponding value of the entry to be added into ExclusiveStartKey.
*/
public ScanRequest addExclusiveStartKeyEntry(String key, AttributeValue value) {
if (null == this.exclusiveStartKey) {
this.exclusiveStartKey = new java.util.HashMap();
}
if (this.exclusiveStartKey.containsKey(key))
throw new IllegalArgumentException("Duplicated keys (" + key.toString() + ") are provided.");
this.exclusiveStartKey.put(key, value);
return this;
}
/**
* Removes all the entries added into ExclusiveStartKey.
*
* Returns a reference to this object so that method calls can be chained together.
*/
public ScanRequest clearExclusiveStartKeyEntries() {
this.exclusiveStartKey = null;
return this;
}
/**
* If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* Constraints:
* Allowed Values: INDEXES, TOTAL, NONE
*
* @return If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* @see ReturnConsumedCapacity
*/
public String getReturnConsumedCapacity() {
return returnConsumedCapacity;
}
/**
* If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* Constraints:
* Allowed Values: INDEXES, TOTAL, NONE
*
* @param returnConsumedCapacity If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* @see ReturnConsumedCapacity
*/
public void setReturnConsumedCapacity(String returnConsumedCapacity) {
this.returnConsumedCapacity = returnConsumedCapacity;
}
/**
* If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Allowed Values: INDEXES, TOTAL, NONE
*
* @param returnConsumedCapacity If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*
* @see ReturnConsumedCapacity
*/
public ScanRequest withReturnConsumedCapacity(String returnConsumedCapacity) {
this.returnConsumedCapacity = returnConsumedCapacity;
return this;
}
/**
* If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* Constraints:
* Allowed Values: INDEXES, TOTAL, NONE
*
* @param returnConsumedCapacity If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* @see ReturnConsumedCapacity
*/
public void setReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity) {
this.returnConsumedCapacity = returnConsumedCapacity.toString();
}
/**
* If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Allowed Values: INDEXES, TOTAL, NONE
*
* @param returnConsumedCapacity If set to TOTAL, the response includes
* ConsumedCapacity data for tables and indexes. If set to
* INDEXES, the response includes ConsumedCapacity
* for indexes. If set to NONE (the default),
* ConsumedCapacity is not included in the response.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*
* @see ReturnConsumedCapacity
*/
public ScanRequest withReturnConsumedCapacity(ReturnConsumedCapacity returnConsumedCapacity) {
this.returnConsumedCapacity = returnConsumedCapacity.toString();
return this;
}
/**
* For a parallel Scan request, TotalSegments represents
* the total number of segments into which the Scan operation will
* be divided. The value of TotalSegments corresponds to the
* number of application workers that will perform the parallel scan. For
* example, if you want to scan a table using four application threads,
* you would specify a TotalSegments value of 4.
The value for
* TotalSegments must be greater than or equal to 1, and less than
* or equal to 4096. If you specify a TotalSegments value of 1,
* the Scan will be sequential rather than parallel.
If you
* specify TotalSegments, you must also specify Segment.
*
* Constraints:
* Range: 1 - 4096
*
* @return For a parallel Scan request, TotalSegments represents
* the total number of segments into which the Scan operation will
* be divided. The value of TotalSegments corresponds to the
* number of application workers that will perform the parallel scan. For
* example, if you want to scan a table using four application threads,
* you would specify a TotalSegments value of 4.
The value for
* TotalSegments must be greater than or equal to 1, and less than
* or equal to 4096. If you specify a TotalSegments value of 1,
* the Scan will be sequential rather than parallel.
If you
* specify TotalSegments, you must also specify Segment.
*/
public Integer getTotalSegments() {
return totalSegments;
}
/**
* For a parallel Scan request, TotalSegments represents
* the total number of segments into which the Scan operation will
* be divided. The value of TotalSegments corresponds to the
* number of application workers that will perform the parallel scan. For
* example, if you want to scan a table using four application threads,
* you would specify a TotalSegments value of 4.
The value for
* TotalSegments must be greater than or equal to 1, and less than
* or equal to 4096. If you specify a TotalSegments value of 1,
* the Scan will be sequential rather than parallel.
If you
* specify TotalSegments, you must also specify Segment.
*
* Constraints:
* Range: 1 - 4096
*
* @param totalSegments For a parallel Scan request, TotalSegments represents
* the total number of segments into which the Scan operation will
* be divided. The value of TotalSegments corresponds to the
* number of application workers that will perform the parallel scan. For
* example, if you want to scan a table using four application threads,
* you would specify a TotalSegments value of 4.
The value for
* TotalSegments must be greater than or equal to 1, and less than
* or equal to 4096. If you specify a TotalSegments value of 1,
* the Scan will be sequential rather than parallel.
If you
* specify TotalSegments, you must also specify Segment.
*/
public void setTotalSegments(Integer totalSegments) {
this.totalSegments = totalSegments;
}
/**
* For a parallel Scan request, TotalSegments represents
* the total number of segments into which the Scan operation will
* be divided. The value of TotalSegments corresponds to the
* number of application workers that will perform the parallel scan. For
* example, if you want to scan a table using four application threads,
* you would specify a TotalSegments value of 4.
The value for
* TotalSegments must be greater than or equal to 1, and less than
* or equal to 4096. If you specify a TotalSegments value of 1,
* the Scan will be sequential rather than parallel.
If you
* specify TotalSegments, you must also specify Segment.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Range: 1 - 4096
*
* @param totalSegments For a parallel Scan request, TotalSegments represents
* the total number of segments into which the Scan operation will
* be divided. The value of TotalSegments corresponds to the
* number of application workers that will perform the parallel scan. For
* example, if you want to scan a table using four application threads,
* you would specify a TotalSegments value of 4.
The value for
* TotalSegments must be greater than or equal to 1, and less than
* or equal to 4096. If you specify a TotalSegments value of 1,
* the Scan will be sequential rather than parallel.
If you
* specify TotalSegments, you must also specify Segment.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withTotalSegments(Integer totalSegments) {
this.totalSegments = totalSegments;
return this;
}
/**
* For a parallel Scan request, Segment identifies an
* individual segment to be scanned by an application worker.
Segment
* IDs are zero-based, so the first segment is always 0. For example, if
* you want to scan a table using four application threads, the first
* thread would specify a Segment value of 0, the second thread
* would specify 1, and so on.
The value of LastEvaluatedKey
* returned from a parallel Scan request must be used as
* ExclusiveStartKey with the same Segment ID in a subsequent
* Scan operation.
The value for Segment must be greater
* than or equal to 0, and less than the value provided for
* TotalSegments.
If you specify Segment, you must also
* specify TotalSegments.
*
* Constraints:
* Range: 0 - 4095
*
* @return For a parallel Scan request, Segment identifies an
* individual segment to be scanned by an application worker.
Segment
* IDs are zero-based, so the first segment is always 0. For example, if
* you want to scan a table using four application threads, the first
* thread would specify a Segment value of 0, the second thread
* would specify 1, and so on.
The value of LastEvaluatedKey
* returned from a parallel Scan request must be used as
* ExclusiveStartKey with the same Segment ID in a subsequent
* Scan operation.
The value for Segment must be greater
* than or equal to 0, and less than the value provided for
* TotalSegments.
If you specify Segment, you must also
* specify TotalSegments.
*/
public Integer getSegment() {
return segment;
}
/**
* For a parallel Scan request, Segment identifies an
* individual segment to be scanned by an application worker.
Segment
* IDs are zero-based, so the first segment is always 0. For example, if
* you want to scan a table using four application threads, the first
* thread would specify a Segment value of 0, the second thread
* would specify 1, and so on.
The value of LastEvaluatedKey
* returned from a parallel Scan request must be used as
* ExclusiveStartKey with the same Segment ID in a subsequent
* Scan operation.
The value for Segment must be greater
* than or equal to 0, and less than the value provided for
* TotalSegments.
If you specify Segment, you must also
* specify TotalSegments.
*
* Constraints:
* Range: 0 - 4095
*
* @param segment For a parallel Scan request, Segment identifies an
* individual segment to be scanned by an application worker.
Segment
* IDs are zero-based, so the first segment is always 0. For example, if
* you want to scan a table using four application threads, the first
* thread would specify a Segment value of 0, the second thread
* would specify 1, and so on.
The value of LastEvaluatedKey
* returned from a parallel Scan request must be used as
* ExclusiveStartKey with the same Segment ID in a subsequent
* Scan operation.
The value for Segment must be greater
* than or equal to 0, and less than the value provided for
* TotalSegments.
If you specify Segment, you must also
* specify TotalSegments.
*/
public void setSegment(Integer segment) {
this.segment = segment;
}
/**
* For a parallel Scan request, Segment identifies an
* individual segment to be scanned by an application worker.
Segment
* IDs are zero-based, so the first segment is always 0. For example, if
* you want to scan a table using four application threads, the first
* thread would specify a Segment value of 0, the second thread
* would specify 1, and so on.
The value of LastEvaluatedKey
* returned from a parallel Scan request must be used as
* ExclusiveStartKey with the same Segment ID in a subsequent
* Scan operation.
The value for Segment must be greater
* than or equal to 0, and less than the value provided for
* TotalSegments.
If you specify Segment, you must also
* specify TotalSegments.
*
* Returns a reference to this object so that method calls can be chained together.
*
* Constraints:
* Range: 0 - 4095
*
* @param segment For a parallel Scan request, Segment identifies an
* individual segment to be scanned by an application worker.
Segment
* IDs are zero-based, so the first segment is always 0. For example, if
* you want to scan a table using four application threads, the first
* thread would specify a Segment value of 0, the second thread
* would specify 1, and so on.
The value of LastEvaluatedKey
* returned from a parallel Scan request must be used as
* ExclusiveStartKey with the same Segment ID in a subsequent
* Scan operation.
The value for Segment must be greater
* than or equal to 0, and less than the value provided for
* TotalSegments.
If you specify Segment, you must also
* specify TotalSegments.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public ScanRequest withSegment(Integer segment) {
this.segment = segment;
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 (getAttributesToGet() != null) sb.append("AttributesToGet: " + getAttributesToGet() + ",");
if (getLimit() != null) sb.append("Limit: " + getLimit() + ",");
if (getSelect() != null) sb.append("Select: " + getSelect() + ",");
if (getScanFilter() != null) sb.append("ScanFilter: " + getScanFilter() + ",");
if (getExclusiveStartKey() != null) sb.append("ExclusiveStartKey: " + getExclusiveStartKey() + ",");
if (getReturnConsumedCapacity() != null) sb.append("ReturnConsumedCapacity: " + getReturnConsumedCapacity() + ",");
if (getTotalSegments() != null) sb.append("TotalSegments: " + getTotalSegments() + ",");
if (getSegment() != null) sb.append("Segment: " + getSegment() );
sb.append("}");
return sb.toString();
}
@Override
public int hashCode() {
final int prime = 31;
int hashCode = 1;
hashCode = prime * hashCode + ((getTableName() == null) ? 0 : getTableName().hashCode());
hashCode = prime * hashCode + ((getAttributesToGet() == null) ? 0 : getAttributesToGet().hashCode());
hashCode = prime * hashCode + ((getLimit() == null) ? 0 : getLimit().hashCode());
hashCode = prime * hashCode + ((getSelect() == null) ? 0 : getSelect().hashCode());
hashCode = prime * hashCode + ((getScanFilter() == null) ? 0 : getScanFilter().hashCode());
hashCode = prime * hashCode + ((getExclusiveStartKey() == null) ? 0 : getExclusiveStartKey().hashCode());
hashCode = prime * hashCode + ((getReturnConsumedCapacity() == null) ? 0 : getReturnConsumedCapacity().hashCode());
hashCode = prime * hashCode + ((getTotalSegments() == null) ? 0 : getTotalSegments().hashCode());
hashCode = prime * hashCode + ((getSegment() == null) ? 0 : getSegment().hashCode());
return hashCode;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (obj instanceof ScanRequest == false) return false;
ScanRequest other = (ScanRequest)obj;
if (other.getTableName() == null ^ this.getTableName() == null) return false;
if (other.getTableName() != null && other.getTableName().equals(this.getTableName()) == false) return false;
if (other.getAttributesToGet() == null ^ this.getAttributesToGet() == null) return false;
if (other.getAttributesToGet() != null && other.getAttributesToGet().equals(this.getAttributesToGet()) == false) return false;
if (other.getLimit() == null ^ this.getLimit() == null) return false;
if (other.getLimit() != null && other.getLimit().equals(this.getLimit()) == false) return false;
if (other.getSelect() == null ^ this.getSelect() == null) return false;
if (other.getSelect() != null && other.getSelect().equals(this.getSelect()) == false) return false;
if (other.getScanFilter() == null ^ this.getScanFilter() == null) return false;
if (other.getScanFilter() != null && other.getScanFilter().equals(this.getScanFilter()) == false) return false;
if (other.getExclusiveStartKey() == null ^ this.getExclusiveStartKey() == null) return false;
if (other.getExclusiveStartKey() != null && other.getExclusiveStartKey().equals(this.getExclusiveStartKey()) == 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.getTotalSegments() == null ^ this.getTotalSegments() == null) return false;
if (other.getTotalSegments() != null && other.getTotalSegments().equals(this.getTotalSegments()) == false) return false;
if (other.getSegment() == null ^ this.getSegment() == null) return false;
if (other.getSegment() != null && other.getSegment().equals(this.getSegment()) == false) return false;
return true;
}
}