/*
* 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.invocation.pooled.interfaces;
import java.io.IOException;
import java.io.OutputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectStreamClass;
import java.rmi.Remote;
import java.rmi.server.RemoteObject;
import java.rmi.server.RemoteStub;
/**
* An ObjectOutputStream subclass used by the MarshalledValue class to
* ensure the classes and proxies are loaded using the thread context
* class loader. Currently this does not do anything as neither class or
* proxy annotations are used.
*
* @author Scott.Stark@jboss.org
* @author Clebert.Suconic@jboss.org
* @version $Revision: 81030 $
*/
public class OptimizedObjectOutputStream
extends ObjectOutputStream
{
/** Creates a new instance of MarshalledValueOutputStream
If there is a security manager installed, this method requires a
SerializablePermission("enableSubstitution") permission to ensure it's
ok to enable the stream to do replacement of objects in the stream.
*/
public OptimizedObjectOutputStream(OutputStream os) throws IOException
{
super(os);
enableReplaceObject(true);
}
/**
* Writes just the class name to this output stream.
*
* @param classdesc class description object
*/
protected void writeClassDescriptor(ObjectStreamClass classdesc)
throws IOException
{
if (CompatibilityVersion.pooledInvokerLegacy)
{
writeUTF(classdesc.getName());
}
else
{
super.writeClassDescriptor(classdesc);
}
}
/** Override replaceObject to check for Remote objects that are
not RemoteStubs.
*/
protected Object replaceObject(Object obj) throws IOException
{
if( (obj instanceof Remote) && !(obj instanceof RemoteStub) )
{
Remote remote = (Remote) obj;
try
{
obj = RemoteObject.toStub(remote);
}
catch(IOException ignore)
{
// Let the Serialization layer try with the orignal obj
}
}
return obj;
}
}