org.activemq.io.impl
Class AbstractPacketMarshaller

java.lang.Object
  org.activemq.io.impl.AbstractPacketReader
      org.activemq.io.impl.AbstractPacketMarshaller

All Implemented Interfaces:

PacketReader, PacketWriter

public abstract class AbstractPacketMarshaller
extends AbstractPacketReader
implements PacketWriter

Version:

$Revision: 1.1 $

Field Summary

protected int

wireFormatVersion

Constructor Summary

AbstractPacketMarshaller()

Method Summary

boolean	canWrite(Packet packet)
int	getWireFormatVersion()
protected ActiveMQDestination	readDestination(DataInput dataIn) Reads a destination from the input stream
void	setWireFormatVersion(int version) Set the wire format version
protected void	writeDestination(ActiveMQDestination destination, DataOutput dataOut) Writes the given destination to the stream
protected void	writeObject(Object object, DataOutput dataOut) Simple (but inefficent) utility method to write an object on to a stream
void	writePacket(Packet p, DataOutput dataOut) Write a Packet instance to data output stream
byte[]	writePacketToByteArray(Packet packet) Serializes a Packet int a byte array
protected void	writeUTF(String str, DataOutput dataOut) simple helper method to ensure null strings are catered for

Methods inherited from class org.activemq.io.impl.AbstractPacketReader

buildPacket, canRead, readObject, readPacketFromByteArray, readUTF

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.activemq.io.impl.PacketWriter

getPacketType

Methods inherited from interface org.activemq.io.impl.PacketReader

createPacket, getPacketType

Field Detail

wireFormatVersion

protected int wireFormatVersion

Constructor Detail

AbstractPacketMarshaller

public AbstractPacketMarshaller()

Method Detail

writeUTF

protected void writeUTF(String str,
                        DataOutput dataOut)
                 throws IOException

simple helper method to ensure null strings are catered for

Parameters:

str -

dataOut -

Throws:

IOException

readDestination

protected ActiveMQDestination readDestination(DataInput dataIn)
                                       throws IOException

Reads a destination from the input stream

Throws:

IOException

writeDestination

protected void writeDestination(ActiveMQDestination destination,
                                DataOutput dataOut)
                         throws IOException

Writes the given destination to the stream

Throws:

IOException

canWrite

public boolean canWrite(Packet packet)

Specified by:

canWrite in interface PacketWriter

Parameters:

packet -

Returns:

true if this PacketWriter can write this type of Packet

writeObject

protected void writeObject(Object object,
                           DataOutput dataOut)
                    throws IOException

Simple (but inefficent) utility method to write an object on to a stream

Parameters:

object -

dataOut -

Throws:

IOException

writePacketToByteArray

public byte[] writePacketToByteArray(Packet packet)
                              throws IOException

Serializes a Packet int a byte array

Specified by:

writePacketToByteArray in interface PacketWriter

Parameters:

packet -

Returns:

the byte[]

Throws:

IOException

writePacket

public void writePacket(Packet p,
                        DataOutput dataOut)
                 throws IOException

Write a Packet instance to data output stream

Specified by:

writePacket in interface PacketWriter

Parameters:

p - the instance to be seralized

dataOut - the output stream

Throws:

IOException - thrown if an error occurs

setWireFormatVersion

public void setWireFormatVersion(int version)

Set the wire format version

Specified by:

setWireFormatVersion in interface PacketReader

Specified by:

setWireFormatVersion in interface PacketWriter

Overrides:

setWireFormatVersion in class AbstractPacketReader

Parameters:

version -

getWireFormatVersion

public int getWireFormatVersion()

Specified by:

getWireFormatVersion in interface PacketReader

Specified by:

getWireFormatVersion in interface PacketWriter

Overrides:

getWireFormatVersion in class AbstractPacketReader

Returns:

the wire format version