com.amazonaws.services.dynamodbv2.model.DeleteRequest Maven / Gradle / Ivy
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/*
* Copyright 2011-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not
* use this file except in compliance with the License. A copy of the License is
* located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.services.dynamodbv2.model;
import java.io.Serializable;
/**
*
* Represents a request to perform a DeleteItem operation on an item.
*
*/
public class DeleteRequest implements Serializable, Cloneable {
/**
*
* A map of attribute name to attribute values, representing the primary key
* of the item to delete. All of the table's primary key attributes must be
* specified, and their data types must match those of the table's key
* schema.
*
*/
private java.util.Map key;
/**
* Default constructor for DeleteRequest object. Callers should use the
* setter or fluent setter (with...) methods to initialize the object after
* creating it.
*/
public DeleteRequest() {
}
/**
* Constructs a new DeleteRequest object. Callers should use the setter or
* fluent setter (with...) methods to initialize any additional object
* members.
*
* @param key
* A map of attribute name to attribute values, representing the
* primary key of the item to delete. All of the table's primary key
* attributes must be specified, and their data types must match
* those of the table's key schema.
*/
public DeleteRequest(java.util.Map key) {
setKey(key);
}
/**
*
* A map of attribute name to attribute values, representing the primary key
* of the item to delete. All of the table's primary key attributes must be
* specified, and their data types must match those of the table's key
* schema.
*
*
* @return A map of attribute name to attribute values, representing the
* primary key of the item to delete. All of the table's primary key
* attributes must be specified, and their data types must match
* those of the table's key schema.
*/
public java.util.Map getKey() {
return key;
}
/**
*
* A map of attribute name to attribute values, representing the primary key
* of the item to delete. All of the table's primary key attributes must be
* specified, and their data types must match those of the table's key
* schema.
*
*
* @param key
* A map of attribute name to attribute values, representing the
* primary key of the item to delete. All of the table's primary key
* attributes must be specified, and their data types must match
* those of the table's key schema.
*/
public void setKey(java.util.Map key) {
this.key = key;
}
/**
*
* A map of attribute name to attribute values, representing the primary key
* of the item to delete. All of the table's primary key attributes must be
* specified, and their data types must match those of the table's key
* schema.
*
*
* @param key
* A map of attribute name to attribute values, representing the
* primary key of the item to delete. All of the table's primary key
* attributes must be specified, and their data types must match
* those of the table's key schema.
* @return Returns a reference to this object so that method calls can be
* chained together.
*/
public DeleteRequest withKey(java.util.Map key) {
setKey(key);
return this;
}
public DeleteRequest addKeyEntry(String key, AttributeValue value) {
if (null == this.key) {
this.key = new java.util.HashMap();
}
if (this.key.containsKey(key))
throw new IllegalArgumentException("Duplicated keys ("
+ key.toString() + ") are provided.");
this.key.put(key, value);
return this;
}
/**
* Removes all the entries added into Key. <p> Returns a reference to
* this object so that method calls can be chained together.
*/
public DeleteRequest clearKeyEntries() {
this.key = null;
return this;
}
/**
* Set the hash and range key attributes of the item.
*
* For a hash-only table, you only need to provide the hash attribute. For a
* hash-and-range table, you must provide both.
*
* @param hashKey
* a map entry including the name and value of the primary hash key.
* @param rangeKey
* a map entry including the name and value of the primary range key,
* or null if it is a hash-only table.
*/
public void setKey(java.util.Map.Entry hashKey,
java.util.Map.Entry rangeKey)
throws IllegalArgumentException {
java.util.HashMap key = new java.util.HashMap();
if (hashKey != null) {
key.put(hashKey.getKey(), hashKey.getValue());
} else {
throw new IllegalArgumentException(
"hashKey must be non-null object.");
}
if (rangeKey != null) {
key.put(rangeKey.getKey(), rangeKey.getValue());
}
setKey(key);
}
/**
* Set the hash and range key attributes of the item.
*
* For a hash-only table, you only need to provide the hash attribute. For a
* hash-and-range table, you must provide both.
*
* Returns a reference to this object so that method calls can be chained
* together.
*
* @param hashKey
* a map entry including the name and value of the primary hash key.
* @param rangeKey
* a map entry including the name and value of the primary range key,
* or null if it is a hash-only table.
*/
public DeleteRequest withKey(
java.util.Map.Entry hashKey,
java.util.Map.Entry rangeKey)
throws IllegalArgumentException {
setKey(hashKey, rangeKey);
return this;
}
/**
* Returns a string representation of this object; useful for testing and
* debugging.
*
* @return A string representation of this object.
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("{");
if (getKey() != null)
sb.append("Key: " + getKey());
sb.append("}");
return sb.toString();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (obj instanceof DeleteRequest == false)
return false;
DeleteRequest other = (DeleteRequest) obj;
if (other.getKey() == null ^ this.getKey() == null)
return false;
if (other.getKey() != null
&& other.getKey().equals(this.getKey()) == false)
return false;
return true;
}
@Override
public int hashCode() {
final int prime = 31;
int hashCode = 1;
hashCode = prime * hashCode
+ ((getKey() == null) ? 0 : getKey().hashCode());
return hashCode;
}
@Override
public DeleteRequest clone() {
try {
return (DeleteRequest) super.clone();
} catch (CloneNotSupportedException e) {
throw new IllegalStateException(
"Got a CloneNotSupportedException from Object.clone() "
+ "even though we're Cloneable!", e);
}
}
}