/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb.plugins.local;
import javax.ejb.EJBLocalHome;
import javax.ejb.EJBLocalObject;
import javax.ejb.RemoveException;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
/**
* The proxy for an EJBLocalHome object.
*
* @author <a href="mailto:docodan@mvcsoft.com">Daniel OConnor</a>
* @author <a href="mailto:scott.stark@jboss.org">Scott Stark</a>
* @version $Revision: 81030 $
*/
public class LocalHomeProxy
extends LocalProxy
implements InvocationHandler
{
static final long serialVersionUID = 1762319499924478521L;
/** {@link javax.ejb.EJBHome#remove(Object)} method reference. */
protected static final Method REMOVE_BY_PRIMARY_KEY;
/** {@link javax.ejb.EJBObject#remove} method reference. */
protected static final Method REMOVE_OBJECT;
/**
* Initialize {@link javax.ejb.EJBHome} and {@link javax.ejb.EJBObject} method references.
*/
static
{
try
{
final Class empty[] = {};
final Class type = EJBLocalHome.class;
REMOVE_BY_PRIMARY_KEY = type.getMethod("remove", new Class[] {Object.class});
// Get the "remove" method from the EJBObject
REMOVE_OBJECT = EJBLocalObject.class.getMethod("remove", empty);
}
catch (Exception e)
{
e.printStackTrace();
throw new ExceptionInInitializerError(e);
}
}
public LocalHomeProxy(String jndiName, BaseLocalProxyFactory factory)
{
super(jndiName, factory);
}
protected Object getId()
{
return jndiName;
}
/**
* InvocationHandler implementation.
*
* @param proxy The proxy object.
* @param m The method being invoked.
* @param args The arguments for the method.
*
* @throws Throwable Any exception or error thrown while processing.
*/
public Object invoke(final Object proxy, final Method m,
Object[] args)
throws Throwable
{
Object retValue = null;
if (args == null)
args = EMPTY_ARGS;
// Implement local methods
if (m.equals(TO_STRING))
{
retValue = jndiName + "Home";
}
else if (m.equals(EQUALS))
{
// equality of the proxy home is based on names...
Object temp = invoke(proxy, TO_STRING, args);
retValue = new Boolean(temp.equals(jndiName + "Home"));
}
else if (m.equals(HASH_CODE))
{
retValue = new Integer(this.hashCode());
}
else if (m.equals(REMOVE_BY_PRIMARY_KEY))
{
try
{
// The trick is simple we trick the container in believe it
// is a remove() on the instance
Object id = args[0];
retValue = factory.invoke(id, REMOVE_OBJECT, EMPTY_ARGS);
}
catch (Exception e)
{
RemoveException re = new RemoveException(e.getMessage());
re.initCause(e);
throw re;
}
}
// If not taken care of, go on and call the container
else
{
retValue = factory.invokeHome(m, args);
}
return retValue;
}
}