org.jgroups.mux

Class MuxHeader

java.lang.Object

org.jgroups.Header

org.jgroups.mux.MuxHeader

All Implemented Interfaces:

java.io.Externalizable, java.io.Serializable, Streamable

public class MuxHeader
extends Header
implements Streamable

Header used for multiplexing and de-multiplexing between service components on top of a Multiplexer (Channel)

Version:

$Id: MuxHeader.java,v 1.7.4.1 2008/01/22 11:47:07 belaban Exp $

Author:

Bela Ban

See Also:

Serialized Form

Field Summary

Fields inherited from class org.jgroups.Header

HDR_OVERHEAD

Constructor Summary

Constructors

Constructor and Description
MuxHeader()
MuxHeader(ServiceInfo info)
MuxHeader(java.lang.String id)

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	getId()
void	readExternal(java.io.ObjectInput in)
void	readFrom(java.io.DataInputStream in) Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed
int	size() To be implemented by subclasses.
java.lang.String	toString()
void	writeExternal(java.io.ObjectOutput out)
void	writeTo(java.io.DataOutputStream out) Write the entire state of the current object (including superclasses) to outstream.

Methods inherited from class java.lang.Object

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

Constructor Detail

MuxHeader

public MuxHeader()

MuxHeader

public MuxHeader(java.lang.String id)

MuxHeader

public MuxHeader(ServiceInfo info)

Method Detail

getId

public java.lang.String getId()

writeExternal

public void writeExternal(java.io.ObjectOutput out)
                   throws java.io.IOException

Specified by:

writeExternal in interface java.io.Externalizable

Throws:

java.io.IOException

readExternal

public void readExternal(java.io.ObjectInput in)
                  throws java.io.IOException,
                         java.lang.ClassNotFoundException

Specified by:

readExternal in interface java.io.Externalizable

Throws:

java.io.IOException

java.lang.ClassNotFoundException

size

public int size()

Description copied from class: Header

To be implemented by subclasses. Return the size of this object for the serialized version of it. I.e. how many bytes this object takes when flattened into a buffer. This may be different for each instance, or can be the same. This may also just be an estimation. E.g. FRAG uses it on Message to determine whether or not to fragment the message. Fragmentation itself will be accurate, because the entire message will actually be serialized into a byte buffer, so we can determine the exact size.

Overrides:

size in class Header

writeTo

public void writeTo(java.io.DataOutputStream out)
             throws java.io.IOException

Description copied from interface: Streamable

Write the entire state of the current object (including superclasses) to outstream. Note that the output stream must not be closed

Specified by:

writeTo in interface Streamable

Throws:

java.io.IOException

readFrom

public void readFrom(java.io.DataInputStream in)
              throws java.io.IOException,
                     java.lang.IllegalAccessException,
                     java.lang.InstantiationException

Description copied from interface: Streamable

Read the state of the current object (including superclasses) from instream Note that the input stream must not be closed

Specified by:

readFrom in interface Streamable

Throws:

java.io.IOException

java.lang.IllegalAccessException

java.lang.InstantiationException

toString

public java.lang.String toString()

Overrides:

toString in class Header