/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Sam
*/
package com.caucho.ejb.message;
import javax.jms.MessageListener;
import javax.jms.Message;
import javax.ejb.MessageDrivenBean;
import javax.ejb.EJBException;
import javax.ejb.MessageDrivenContext;
import java.lang.reflect.Method;
import java.lang.reflect.InvocationTargetException;
@SuppressWarnings("serial")
public class MessageListenerAdapter
implements MessageListener, MessageDrivenBean
{
private final Object _listener;
private final MessageDrivenBean _messageDrivenBean;
private final Method _onMessageMethod;
private final Method _ejbCreateMethod;
public MessageListenerAdapter(Object listener)
throws NoSuchMethodException
{
// ejb/0f94
Class<?> cl = listener.getClass();
_listener = listener;
_onMessageMethod = cl.getMethod("onMessage", new Class[] { Message.class });
Method ejbCreateMethod;
if (listener instanceof MessageDrivenBean) {
_messageDrivenBean = (MessageDrivenBean) listener;
try {
ejbCreateMethod = cl.getMethod("ejbCreate", new Class[0]);
}
catch (NoSuchMethodException e) {
ejbCreateMethod = null;
}
}
else {
_messageDrivenBean = null;
ejbCreateMethod = null;
}
_ejbCreateMethod = ejbCreateMethod;
}
public Object getListener()
{
return _listener;
}
public void onMessage(Message message)
{
try {
_onMessageMethod.invoke(_listener, message);
}
catch (IllegalAccessException e) {
throw new RuntimeException(e);
}
catch (InvocationTargetException e) {
throw new RuntimeException(e);
}
}
public void ejbCreate()
throws IllegalAccessException, InvocationTargetException
{
if (_ejbCreateMethod != null)
_ejbCreateMethod.invoke(_listener, new Object[] {});
}
public void ejbRemove()
throws EJBException
{
if (_messageDrivenBean != null)
_messageDrivenBean.ejbRemove();
}
public void setMessageDrivenContext(MessageDrivenContext ctx)
throws EJBException
{
if (_messageDrivenBean != null)
_messageDrivenBean.setMessageDrivenContext(ctx);
}
}