org.jboss.cache.marshall

Class VersionAwareMarshaller

java.lang.Object

org.jboss.cache.marshall.AbstractMarshaller

org.jboss.cache.marshall.VersionAwareMarshaller

All Implemented Interfaces:

Marshaller, org.jgroups.blocks.RpcDispatcher.Marshaller, org.jgroups.blocks.RpcDispatcher.Marshaller2

public class VersionAwareMarshaller
extends AbstractMarshaller

A delegate to various other marshallers like CacheMarshaller200. This delegating marshaller adds versioning information to the stream when marshalling objects and is able to pick the appropriate marshaller to delegate to based on the versioning information when unmarshalling objects.

Author:

Manik Surtani (manik AT jboss DOT org), Galder Zamarreno

Field Summary

Fields inherited from class org.jboss.cache.marshall.AbstractMarshaller

configuration, defaultClassLoader, defaultInactive, regionManager, trace, useRefs, useRegionBasedMarshalling

Constructor Summary

Constructors

Constructor and Description
VersionAwareMarshaller()

Method Summary

Methods

Modifier and Type	Method and Description
protected int	getCustomMarshallerVersionInt()
void	initReplicationVersions()
Object	objectFromByteBuffer(byte[] bytes, int offset, int len)
Object	objectFromObjectStream(ObjectInputStream in) Unmarshalls an object from an ObjectInputStream
Object	objectFromStream(InputStream is) Unmarshalls an object from an InputStream
ByteBuffer	objectToBuffer(Object obj) A specialized form of RpcDispatcher.Marshaller2.objectToBuffer(Object) that returns an instance of ByteBuffer instead of Buffer.
void	objectToObjectStream(Object obj, ObjectOutputStream out) Marshalls an object to a given ObjectOutputStream
void	objectToObjectStream(Object obj, ObjectOutputStream out, Fqn region) Overloaded form of Marshaller.objectToObjectStream(Object,java.io.ObjectOutputStream) which adds a hint to the Fqn region
RegionalizedMethodCall	regionalizedMethodCallFromByteBuffer(byte[] buf) Returns a RegionalizedMethodCall from a byte buffer.

Methods inherited from class org.jboss.cache.marshall.AbstractMarshaller

extractFqn, init, initLogger, objectFromByteBuffer, objectToByteBuffer, regionalizedMethodCallFromObjectStream

Methods inherited from class java.lang.Object

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

Constructor Detail

VersionAwareMarshaller

public VersionAwareMarshaller()

Method Detail

initReplicationVersions

public void initReplicationVersions()

getCustomMarshallerVersionInt

protected int getCustomMarshallerVersionInt()

objectToBuffer

public ByteBuffer objectToBuffer(Object obj)
                          throws Exception

Description copied from interface: Marshaller

A specialized form of RpcDispatcher.Marshaller2.objectToBuffer(Object) that returns an instance of ByteBuffer instead of Buffer.

Specified by:

objectToBuffer in interface Marshaller

Specified by:

objectToBuffer in interface org.jgroups.blocks.RpcDispatcher.Marshaller2

Overrides:

objectToBuffer in class AbstractMarshaller

Parameters:

obj - object to marshall

Returns:

a ByteBuffer

Throws:

Exception

objectFromByteBuffer

public Object objectFromByteBuffer(byte[] bytes,
                          int offset,
                          int len)
                            throws Exception

Specified by:

objectFromByteBuffer in interface org.jgroups.blocks.RpcDispatcher.Marshaller2

Overrides:

objectFromByteBuffer in class AbstractMarshaller

Throws:

Exception

regionalizedMethodCallFromByteBuffer

public RegionalizedMethodCall regionalizedMethodCallFromByteBuffer(byte[] buf)
                                                            throws Exception

Description copied from interface: Marshaller

Returns a RegionalizedMethodCall from a byte buffer. Only use if you know that the byte buffer contains a MethodCall and that you are using region-based marshalling, otherwise use RpcDispatcher.Marshaller.objectFromByteBuffer(byte[])

Specified by:

regionalizedMethodCallFromByteBuffer in interface Marshaller

Overrides:

regionalizedMethodCallFromByteBuffer in class AbstractMarshaller

Parameters:

buf - byte buffer

Returns:

a RegionalizedMethodCall

Throws:

Exception - if there are issues

objectFromStream

public Object objectFromStream(InputStream is)
                        throws Exception

Description copied from interface: Marshaller

Unmarshalls an object from an InputStream

Specified by:

objectFromStream in interface Marshaller

Overrides:

objectFromStream in class AbstractMarshaller

Parameters:

is - stream to unmarshall from

Returns:

Object from stream passed in.

Throws:

Exception

objectToObjectStream

public void objectToObjectStream(Object obj,
                        ObjectOutputStream out,
                        Fqn region)
                          throws Exception

Description copied from interface: Marshaller

Overloaded form of Marshaller.objectToObjectStream(Object,java.io.ObjectOutputStream) which adds a hint to the Fqn region

Parameters:

obj - object to marshall

out - stream to marshall to

region - fqn that this object pertains to

Throws:

Exception

objectToObjectStream

public void objectToObjectStream(Object obj,
                        ObjectOutputStream out)
                          throws Exception

Description copied from interface: Marshaller

Marshalls an object to a given ObjectOutputStream

Parameters:

obj - object to marshall

out - stream to marshall to

Throws:

Exception

objectFromObjectStream

public Object objectFromObjectStream(ObjectInputStream in)
                              throws Exception

Description copied from interface: Marshaller

Unmarshalls an object from an ObjectInputStream

Parameters:

in - stream to unmarshall from

Throws:

Exception