001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.concurrent;
016    
017    import java.io.Serializable;
018    
019    /**
020     * @author Shuyang Zhou
021     */
022    public class IdentityKey<K> implements Serializable {
023    
024            public IdentityKey(K key) {
025                    _key = key;
026            }
027    
028            @Override
029            public boolean equals(Object obj) {
030                    if (this == obj) {
031                            return true;
032                    }
033    
034                    if (!(obj instanceof IdentityKey)) {
035                            return false;
036                    }
037    
038                    IdentityKey<K> identityKey = (IdentityKey<K>)obj;
039    
040                    if (_key == identityKey._key) {
041                            return true;
042                    }
043    
044                    return false;
045            }
046    
047            public K getKey() {
048                    return _key;
049            }
050    
051            @Override
052            public int hashCode() {
053                    return _key.hashCode();
054            }
055    
056            private static final long serialVersionUID = 1L;
057    
058            private final K _key;
059    
060    }