org.eclipse.persistence.mappings.Association Maven / Gradle / Ivy
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/*
* Copyright (c) 1998, 2018 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.mappings;
import java.util.*;
/**
* Purpose: Generic association object.
* This can be used to map hashtable/map containers where the key and value primitives or independent objects.
*
* @author James Sutherland
* @since TOPLink/Java 3.0
*/
public class Association implements Map.Entry {
protected Object key;
protected Object value;
/**
* Default constructor.
*/
public Association() {
super();
}
/**
* PUBLIC:
* Create an association.
*/
public Association(Object key, Object value) {
this.key = key;
this.value = value;
}
/**
* PUBLIC:
* Return the key.
*/
public Object getKey() {
return key;
}
/**
* PUBLIC:
* Return the value.
*/
public Object getValue() {
return value;
}
/**
* PUBLIC:
* Set the key.
*/
public void setKey(Object key) {
this.key = key;
}
/**
* PUBLIC:
* Set the value.
*/
public Object setValue(Object value) {
Object oldValue = this.value;
this.value = value;
return oldValue;
}
}