org.exolab.jms.message
Class MessageId

java.lang.Object
  |
  +--org.exolab.jms.message.MessageId

All Implemented Interfaces:

java.io.Externalizable, Identifiable, java.io.Serializable

public final class MessageId

extends java.lang.Object

implements java.io.Externalizable, Identifiable

The MessageId is a serializable object that uniquely identifies a message

Version:

$Revision: 1.8 $ $Date: 2003/08/07 13:33:01 $

Author:

Jim Alateras

See Also:

Serialized Form

Field Summary

static java.lang.String

PREFIX The JMS message identifier prefix

Constructor Summary

MessageId()
Constructor provided for serialization

MessageId(java.lang.String id)
Construct a new MessageId

Method Summary

static java.lang.String	create() Allocate a new globally unique message identifier
boolean	equals(java.lang.Object object)
java.lang.String	getId() Return the identity of the object
static java.lang.String	getNull() Return the 'null' JMSMessageID.
int	hashCode()
void	readExternal(java.io.ObjectInput in)
java.lang.String	toString()
void	writeExternal(java.io.ObjectOutput out)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

PREFIX

public static final java.lang.String PREFIX

The JMS message identifier prefix

Constructor Detail

MessageId

public MessageId()

Constructor provided for serialization

MessageId

public MessageId(java.lang.String id)

Construct a new MessageId

Parameters:

id - - the message identity

Method Detail

getId

public java.lang.String getId()

Description copied from interface: Identifiable

Return the identity of the object

Specified by:

getId in interface Identifiable

Following copied from interface: org.exolab.jms.Identifiable

Returns:

the object identity

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

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

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object

create

public static java.lang.String create()

Allocate a new globally unique message identifier

Returns:

a globally unique message identifier

getNull

public static java.lang.String getNull()

Return the 'null' JMSMessageID. This is the first Id recognised by OpenJMS, but not assigned to messages.

Returns:

String the 'null' message Id