001    /**
002     * Copyright (c) 2000-2011 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.bean;
016    
017    import java.lang.Object;
018    import java.lang.reflect.InvocationHandler;
019    import java.lang.reflect.InvocationTargetException;
020    import java.lang.reflect.Method;
021    
022    /**
023     * @author Brian Wing Shun Chan
024     */
025    public class ReadOnlyBeanHandler implements InvocationHandler {
026    
027            public ReadOnlyBeanHandler(Object bean) {
028                    _bean = bean;
029            }
030    
031            public Object getBean() {
032                    return _bean;
033            }
034    
035            public Object invoke(Object proxy, Method method, Object[] args)
036                    throws Throwable {
037    
038                    if (method.getName().startsWith("set")) {
039                            throw new IllegalAccessException(
040                                    "Setter methods cannot be called on a read only bean");
041                    }
042    
043                    try {
044                            return method.invoke(_bean, args);
045                    }
046                    catch (InvocationTargetException ite) {
047                            throw ite.getTargetException();
048                    }
049            }
050    
051            private Object _bean;
052    
053    }