JavaGroups
Class Header

java.lang.Object
  |
  +--JavaGroups.Header

public class Header

extends java.lang.Object

implements java.io.Externalizable, java.lang.Cloneable

Container for header data which is added to the front of a Message by a protocol layer when traveling down the stack. When traveling up on the other side, each protocol layer will remove its Header. Headers can only contain objects, which have to be serializable (or support externalization). Both the object and its byte representation are maintained for faster access of its contents, but the byte buffer is only created when needed (e.g. when Size() or writeExternal() is called) ! .

See Also:

Serialized Form

Constructor Summary

Header()

Header(byte[] data, java.lang.Object obj)

Header(java.lang.Object obj)

Method Summary

java.lang.Object	clone()
java.lang.Object	GetObject()
static void	main(java.lang.String[] args)
void	readExternal(java.io.ObjectInput in)
void	SetObject(java.lang.Object obj)
long	Size()
java.lang.String	toString()
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Header

public Header()

Header

public Header(java.lang.Object obj)

Header

public Header(byte[] data,
              java.lang.Object obj)

Method Detail

SetObject

public void SetObject(java.lang.Object obj)

GetObject

public java.lang.Object GetObject()

Size

public long Size()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

writeExternal

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

Specified by:

writeExternal in interface java.io.Externalizable

readExternal

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

Specified by:

readExternal in interface java.io.Externalizable

main

public static void main(java.lang.String[] args)