org.jboss.portal.portlet.impl.state
Class StateConverterV0

java.lang.Object
  org.jboss.portal.portlet.impl.state.StateConverterV0

All Implemented Interfaces:

StateConverter

public class StateConverterV0
extends java.lang.Object
implements StateConverter

An implementation that relies on the DataInputStream and DataOutputStream to marshall and unmarshall the producer state. The marshalled value starts with a magic value and a version id to ensure future backward compatibility.

It is an important matter because a migrated producer will probably have to take care of consumers that hold a previous version of the producer state.

Version:

$Revision: 1.1 $

Author:

Julien Viet

Constructor Summary

StateConverterV0()

Method Summary

byte[]	marshall(PortletState state) Marshall the producer state as a byte array.
PortletState	unmarshall(byte[] marshalledState) Unmarshall the producer state from a byte array.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StateConverterV0

public StateConverterV0()

Method Detail

marshall

public byte[] marshall(PortletState state)
                throws StateConversionException

Description copied from interface: StateConverter

Marshall the producer state as a byte array.

Specified by:

marshall in interface StateConverter

Parameters:

state - the producer state

Returns:

the marshalled state

Throws:

StateConversionException - if marshalling cannot be performed

unmarshall

public PortletState unmarshall(byte[] marshalledState)
                        throws StateConversionException

Description copied from interface: StateConverter

Unmarshall the producer state from a byte array.

Specified by:

unmarshall in interface StateConverter

Parameters:

marshalledState - the marshalled state

Returns:

the producer state

Throws:

StateConversionException - if unmarshalling cannot be performed