/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, 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.invocation;
import java.io.Externalizable;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
/**
* An InvokerInterceptor that does not optimize remote invocations.<p>
*
* This interceptor implements spec compliant behaviour.<p>
*
* @todo The performance could be improved by simulating marshalling
* for "local" remote, rather than going straight for the invoker
*
* @author <a href="mailto:adrian.brock@happeningtimes.com">Adrian Brock</a>
* @version $Revision: 85945 $
*/
public class ByValueInvokerInterceptor
extends InvokerInterceptor
implements Externalizable
{
/** Serial Version Identifier. @since 1.1.4.1 */
private static final long serialVersionUID = -6402069656713307195L;
public ByValueInvokerInterceptor()
{
// For externalization to work
}
// Public --------------------------------------------------------
/**
* Are you local?
*/
public boolean isLocal(Invocation invocation)
{
InvocationType type = invocation.getType();
if (type == InvocationType.LOCAL || type == InvocationType.LOCALHOME)
return true;
return false;
}
/**
* Invoke using the invoker for remote invocations
*/
public Object invoke(Invocation invocation)
throws Exception
{
// local interface
if (isLocal(invocation))
// The payload as is is good
return localInvoker.invoke(invocation);
else
// through the invoker
return invocation.getInvocationContext().getInvoker().invoke(invocation);
}
/**
* Externalize this instance.
*/
public void writeExternal(final ObjectOutput out)
throws IOException
{
// We have no state
}
/**
* Un-externalize this instance.
*/
public void readExternal(final ObjectInput in)
throws IOException, ClassNotFoundException
{
// We have no state
}
// Private -------------------------------------------------------
// Inner classes -------------------------------------------------
}