jegg.impl
Class MessageImpl

java.lang.Object
  jegg.impl.MessageImpl

All Implemented Interfaces:

Message

public class MessageImpl

extends java.lang.Object

implements Message

Used to wrap an application message that is being sent from one egg to another.

The Message instance not wraps the sending egg's concrete message object, but also holds a reference to the sending egg's own message port and the priority of the message.

An egg can use a special base-class method, Egg.createMessage(), to wrap an application message before writing it to a message port.

Constructor Summary

MessageImpl(java.lang.Object m, Port p, Priority pr)
Create a JEgg message.

Method Summary

Port	getFrom() Return the port of the egg that sent this message.
java.lang.Object	getMessage() Return the application message.
Priority	getPriority() Return the dispatch priority of this message.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

MessageImpl

public MessageImpl(java.lang.Object m,
                   Port p,
                   Priority pr)

Create a JEgg message.

Parameters:

m - the application message being sent.

p - the port of the sending egg.

pr - the message's dispatch priority.

Method Detail

getFrom

public final Port getFrom()

Description copied from interface: Message

Return the port of the egg that sent this message.

Specified by:

getFrom in interface Message

Returns:

the sending egg's message port.

getMessage

public final java.lang.Object getMessage()

Description copied from interface: Message

Return the application message.

Specified by:

getMessage in interface Message

Returns:

the application message wrapped by this JEgg message.

getPriority

public final Priority getPriority()

Description copied from interface: Message

Return the dispatch priority of this message.

Specified by:

getPriority in interface Message

Returns:

dispatch priority.

toString

public final java.lang.String toString()