001    /**
002     * Copyright (c) 2000-2013 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.messaging;
016    
017    /**
018     * @author Michael C. Han
019     */
020    public class InvokerMessageListener implements MessageListener {
021    
022            public InvokerMessageListener(MessageListener messageListener) {
023                    this(messageListener, Thread.currentThread().getContextClassLoader());
024            }
025    
026            public InvokerMessageListener(
027                    MessageListener messageListener, ClassLoader classLoader) {
028    
029                    _messageListener = messageListener;
030                    _classLoader = classLoader;
031            }
032    
033            @Override
034            public boolean equals(Object obj) {
035                    if (this == obj) {
036                            return true;
037                    }
038    
039                    if (!(obj instanceof InvokerMessageListener)) {
040                            return false;
041                    }
042    
043                    InvokerMessageListener messageListenerInvoker =
044                            (InvokerMessageListener)obj;
045    
046                    return _messageListener.equals(
047                            messageListenerInvoker.getMessageListener());
048            }
049    
050            public ClassLoader getClassLoader() {
051                    return _classLoader;
052            }
053    
054            public MessageListener getMessageListener() {
055                    return _messageListener;
056            }
057    
058            @Override
059            public int hashCode() {
060                    return _messageListener.hashCode();
061            }
062    
063            @Override
064            public void receive(Message message) throws MessageListenerException {
065                    Thread currentThread = Thread.currentThread();
066    
067                    ClassLoader contextClassLoader = currentThread.getContextClassLoader();
068    
069                    currentThread.setContextClassLoader(_classLoader);
070    
071                    try {
072                            _messageListener.receive(message);
073                    }
074                    finally {
075                            currentThread.setContextClassLoader(contextClassLoader);
076                    }
077            }
078    
079            private ClassLoader _classLoader;
080            private MessageListener _messageListener;
081    
082    }