/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.remoting.marshal.serializable;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.util.Map;
import org.jboss.remoting.marshal.PreferredStreamUnMarshaller;
import org.jboss.remoting.marshal.UnMarshaller;
import org.jboss.remoting.serialization.SerializationManager;
import org.jboss.remoting.serialization.SerializationStreamFactory;
/**
* Will perform the deserialization of objects off the wire.
*
* @author <a href="mailto:tom@jboss.org">Tom Elrod</a>
*/
public class SerializableUnMarshaller implements PreferredStreamUnMarshaller
{
static final long serialVersionUID = -1554017376768780738L;
public final static String DATATYPE = "serializable";
protected ClassLoader customClassLoader = null;
protected String serializationType;
public InputStream getMarshallingStream(InputStream inputStream) throws IOException
{
return getMarshallingStream(inputStream, null);
}
/**
* SerializableUnMarshaller prefers to read from an ObjectOutputStream wrapped around a
* BufferedInputStream
*/
public InputStream getMarshallingStream(InputStream inputStream, Map config) throws IOException
{
if (inputStream instanceof ObjectInputStream)
{
return inputStream;
}
else
{
BufferedInputStream bis = new BufferedInputStream(inputStream);
SerializationManager manager = SerializationStreamFactory.getManagerInstance(getSerializationType());
return manager.createInput(bis, customClassLoader);
}
}
/**
* Reads the data from the input stream and converts to an Object.
* <p/>
* If the inputStream passed is an ObjectInputStream (which would prefer it not be), it will just
* use it as given. If the input stream is not an instance of ObjectInputStream, will wrap it with a
* custom ObjectInputStream (ObjectInputStreamWithClassLoader) and use it. The ObjectInputStreamWithClassLoader
* will use the custom class loader set in order to ensure that any classes not found within the local classloader
* can be loaded from the server and used within the client VM. If the inpustream is of type ObjectInputStreamWithClassLoader,
* then will just set the classloader to the custom classloader and proceed.<p>
*
* @param inputStream
* @param metadata
* @return
* @throws IOException
* @throws ClassNotFoundException
*/
public Object read(InputStream inputStream, Map metadata) throws IOException, ClassNotFoundException
{
ObjectInputStream ois = (ObjectInputStream) getMarshallingStream(inputStream, null);
return SerializationStreamFactory.getManagerInstance(getSerializationType()).receiveObject(ois, customClassLoader);
}
/**
* Sets the classloader to be used when deserializing objects off the wire. This will ONLY be used in the
* when the input stream passed to the read() method is NOT an instance of ObjectInputStream.<p>
*
* @param classloader
*/
public void setClassLoader(ClassLoader classloader)
{
this.customClassLoader = classloader;
}
public UnMarshaller cloneUnMarshaller()
throws CloneNotSupportedException
{
SerializableUnMarshaller unmarshaller = new SerializableUnMarshaller();
unmarshaller.setClassLoader(this.customClassLoader);
return unmarshaller;
}
public void setSerializationType(String serializationType)
{
this.serializationType = serializationType;
}
public String getSerializationType()
{
if(serializationType == null)
{
return "java";
}
else
{
return serializationType;
}
}
}