/*
* Copyright 2010-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.services.simpledb.model;
import java.io.Serializable;
/**
* <p>
* Specifies the conditions under which data should be updated. If an
* update condition is specified for a request, the data will only be
* updated if the condition is satisfied. For example, if an attribute
* with a specific name and value exists, or if a specific attribute
* doesn't exist.
* </p>
*/
public class UpdateCondition implements Serializable {
/**
* The name of the attribute involved in the condition.
*/
private String name;
/**
* The value of an attribute. This value can only be specified when the
* <code>Exists</code> parameter is equal to <code>true</code>.
*/
private String value;
/**
* A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*/
private Boolean exists;
/**
* Default constructor for a new UpdateCondition object. Callers should use the
* setter or fluent setter (with...) methods to initialize this object after creating it.
*/
public UpdateCondition() {}
/**
* Constructs a new UpdateCondition object.
* Callers should use the setter or fluent setter (with...) methods to
* initialize any additional object members.
*
* @param name The name of the attribute involved in the condition.
* @param value The value of an attribute. This value can only be
* specified when the <code>Exists</code> parameter is equal to
* <code>true</code>.
* @param exists A value specifying whether or not the specified
* attribute must exist with the specified value in order for the update
* condition to be satisfied. Specify <code>true</code> if the attribute
* must exist for the update condition to be satisfied. Specify
* <code>false</code> if the attribute should not exist in order for the
* update condition to be satisfied.
*/
public UpdateCondition(String name, String value, Boolean exists) {
setName(name);
setValue(value);
setExists(exists);
}
/**
* The name of the attribute involved in the condition.
*
* @return The name of the attribute involved in the condition.
*/
public String getName() {
return name;
}
/**
* The name of the attribute involved in the condition.
*
* @param name The name of the attribute involved in the condition.
*/
public void setName(String name) {
this.name = name;
}
/**
* The name of the attribute involved in the condition.
* <p>
* Returns a reference to this object so that method calls can be chained together.
*
* @param name The name of the attribute involved in the condition.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public UpdateCondition withName(String name) {
this.name = name;
return this;
}
/**
* The value of an attribute. This value can only be specified when the
* <code>Exists</code> parameter is equal to <code>true</code>.
*
* @return The value of an attribute. This value can only be specified when the
* <code>Exists</code> parameter is equal to <code>true</code>.
*/
public String getValue() {
return value;
}
/**
* The value of an attribute. This value can only be specified when the
* <code>Exists</code> parameter is equal to <code>true</code>.
*
* @param value The value of an attribute. This value can only be specified when the
* <code>Exists</code> parameter is equal to <code>true</code>.
*/
public void setValue(String value) {
this.value = value;
}
/**
* The value of an attribute. This value can only be specified when the
* <code>Exists</code> parameter is equal to <code>true</code>.
* <p>
* Returns a reference to this object so that method calls can be chained together.
*
* @param value The value of an attribute. This value can only be specified when the
* <code>Exists</code> parameter is equal to <code>true</code>.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public UpdateCondition withValue(String value) {
this.value = value;
return this;
}
/**
* A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*
* @return A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*/
public Boolean isExists() {
return exists;
}
/**
* A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*
* @param exists A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*/
public void setExists(Boolean exists) {
this.exists = exists;
}
/**
* A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
* <p>
* Returns a reference to this object so that method calls can be chained together.
*
* @param exists A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*
* @return A reference to this updated object so that method calls can be chained
* together.
*/
public UpdateCondition withExists(Boolean exists) {
this.exists = exists;
return this;
}
/**
* A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*
* @return A value specifying whether or not the specified attribute must exist
* with the specified value in order for the update condition to be
* satisfied. Specify <code>true</code> if the attribute must exist for
* the update condition to be satisfied. Specify <code>false</code> if
* the attribute should not exist in order for the update condition to be
* satisfied.
*/
public Boolean getExists() {
return exists;
}
/**
* 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 (getName() != null) sb.append("Name: " + getName() + ",");
if (getValue() != null) sb.append("Value: " + getValue() + ",");
if (isExists() != null) sb.append("Exists: " + isExists() );
sb.append("}");
return sb.toString();
}
@Override
public int hashCode() {
final int prime = 31;
int hashCode = 1;
hashCode = prime * hashCode + ((getName() == null) ? 0 : getName().hashCode());
hashCode = prime * hashCode + ((getValue() == null) ? 0 : getValue().hashCode());
hashCode = prime * hashCode + ((isExists() == null) ? 0 : isExists().hashCode());
return hashCode;
}
@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (obj instanceof UpdateCondition == false) return false;
UpdateCondition other = (UpdateCondition)obj;
if (other.getName() == null ^ this.getName() == null) return false;
if (other.getName() != null && other.getName().equals(this.getName()) == false) return false;
if (other.getValue() == null ^ this.getValue() == null) return false;
if (other.getValue() != null && other.getValue().equals(this.getValue()) == false) return false;
if (other.isExists() == null ^ this.isExists() == null) return false;
if (other.isExists() != null && other.isExists().equals(this.isExists()) == false) return false;
return true;
}
}