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/*
* Copyright 2012-2017 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 javax.annotation.Generated;
/**
*
* Represents a single element of a key schema. A key schema specifies the attributes that make up the primary
* key of a table, or the key attributes of an index.
*
*
* A KeySchemaElement represents exactly one attribute of the primary key. For example, a simple primary
* key would be represented by one KeySchemaElement (for the partition key). A composite primary key would
* require one KeySchemaElement for the partition key, and another KeySchemaElement for the
* sort key.
*
*
* A KeySchemaElement must be a scalar, top-level attribute (not a nested attribute). The data type must be
* one of String, Number, or Binary. The attribute cannot be nested within a List or a Map.
*
*
* @see AWS API
* Documentation
*/
@Generated("com.amazonaws:aws-java-sdk-code-generator")
public class KeySchemaElement implements Serializable, Cloneable {
/**
*
* The name of a key attribute.
*
*/
private String attributeName;
/**
*
* The role that this key attribute will assume:
*
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from
* DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their
* partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives from the
* way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key
* value.
*
*
*/
private String keyType;
/**
* Default constructor for KeySchemaElement object. Callers should use the setter or fluent setter (with...) methods
* to initialize the object after creating it.
*/
public KeySchemaElement() {
}
/**
* Constructs a new KeySchemaElement object. Callers should use the setter or fluent setter (with...) methods to
* initialize any additional object members.
*
* @param attributeName
* The name of a key attribute.
* @param keyType
* The role that this key attribute will assume:
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives
* from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based
* on their partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives
* from the way DynamoDB stores items with the same partition key physically close together, in sorted order
* by the sort key value.
*
*/
public KeySchemaElement(String attributeName, String keyType) {
setAttributeName(attributeName);
setKeyType(keyType);
}
/**
* Constructs a new KeySchemaElement object. Callers should use the setter or fluent setter (with...) methods to
* initialize any additional object members.
*
* @param attributeName
* The name of a key attribute.
* @param keyType
* The role that this key attribute will assume:
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives
* from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based
* on their partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives
* from the way DynamoDB stores items with the same partition key physically close together, in sorted order
* by the sort key value.
*
*/
public KeySchemaElement(String attributeName, KeyType keyType) {
setAttributeName(attributeName);
setKeyType(keyType.toString());
}
/**
*
* The name of a key attribute.
*
*
* @param attributeName
* The name of a key attribute.
*/
public void setAttributeName(String attributeName) {
this.attributeName = attributeName;
}
/**
*
* The name of a key attribute.
*
*
* @return The name of a key attribute.
*/
public String getAttributeName() {
return this.attributeName;
}
/**
*
* The name of a key attribute.
*
*
* @param attributeName
* The name of a key attribute.
* @return Returns a reference to this object so that method calls can be chained together.
*/
public KeySchemaElement withAttributeName(String attributeName) {
setAttributeName(attributeName);
return this;
}
/**
*
* The role that this key attribute will assume:
*
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from
* DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their
* partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives from the
* way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key
* value.
*
*
*
* @param keyType
* The role that this key attribute will assume:
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives
* from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based
* on their partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives
* from the way DynamoDB stores items with the same partition key physically close together, in sorted order
* by the sort key value.
*
* @see KeyType
*/
public void setKeyType(String keyType) {
this.keyType = keyType;
}
/**
*
* The role that this key attribute will assume:
*
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from
* DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their
* partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives from the
* way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key
* value.
*
*
*
* @return The role that this key attribute will assume:
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute"
* derives from DynamoDB' usage of an internal hash function to evenly distribute data items across
* partitions, based on their partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives
* from the way DynamoDB stores items with the same partition key physically close together, in sorted order
* by the sort key value.
*
* @see KeyType
*/
public String getKeyType() {
return this.keyType;
}
/**
*
* The role that this key attribute will assume:
*
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from
* DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their
* partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives from the
* way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key
* value.
*
*
*
* @param keyType
* The role that this key attribute will assume:
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives
* from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based
* on their partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives
* from the way DynamoDB stores items with the same partition key physically close together, in sorted order
* by the sort key value.
*
* @return Returns a reference to this object so that method calls can be chained together.
* @see KeyType
*/
public KeySchemaElement withKeyType(String keyType) {
setKeyType(keyType);
return this;
}
/**
*
* The role that this key attribute will assume:
*
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from
* DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their
* partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives from the
* way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key
* value.
*
*
*
* @param keyType
* The role that this key attribute will assume:
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives
* from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based
* on their partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives
* from the way DynamoDB stores items with the same partition key physically close together, in sorted order
* by the sort key value.
*
* @see KeyType
*/
public void setKeyType(KeyType keyType) {
this.keyType = keyType.toString();
}
/**
*
* The role that this key attribute will assume:
*
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives from
* DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based on their
* partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives from the
* way DynamoDB stores items with the same partition key physically close together, in sorted order by the sort key
* value.
*
*
*
* @param keyType
* The role that this key attribute will assume:
*
* -
*
* HASH - partition key
*
*
* -
*
* RANGE - sort key
*
*
*
*
*
* The partition key of an item is also known as its hash attribute. The term "hash attribute" derives
* from DynamoDB' usage of an internal hash function to evenly distribute data items across partitions, based
* on their partition key values.
*
*
* The sort key of an item is also known as its range attribute. The term "range attribute" derives
* from the way DynamoDB stores items with the same partition key physically close together, in sorted order
* by the sort key value.
*
* @return Returns a reference to this object so that method calls can be chained together.
* @see KeyType
*/
public KeySchemaElement withKeyType(KeyType keyType) {
setKeyType(keyType);
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 (getAttributeName() != null)
sb.append("AttributeName: ").append(getAttributeName()).append(",");
if (getKeyType() != null)
sb.append("KeyType: ").append(getKeyType());
sb.append("}");
return sb.toString();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (obj instanceof KeySchemaElement == false)
return false;
KeySchemaElement other = (KeySchemaElement) obj;
if (other.getAttributeName() == null ^ this.getAttributeName() == null)
return false;
if (other.getAttributeName() != null && other.getAttributeName().equals(this.getAttributeName()) == false)
return false;
if (other.getKeyType() == null ^ this.getKeyType() == null)
return false;
if (other.getKeyType() != null && other.getKeyType().equals(this.getKeyType()) == false)
return false;
return true;
}
@Override
public int hashCode() {
final int prime = 31;
int hashCode = 1;
hashCode = prime * hashCode + ((getAttributeName() == null) ? 0 : getAttributeName().hashCode());
hashCode = prime * hashCode + ((getKeyType() == null) ? 0 : getKeyType().hashCode());
return hashCode;
}
@Override
public KeySchemaElement clone() {
try {
return (KeySchemaElement) super.clone();
} catch (CloneNotSupportedException e) {
throw new IllegalStateException("Got a CloneNotSupportedException from Object.clone() " + "even though we're Cloneable!", e);
}
}
}