org.apache.activemq.filter

Class MessageEvaluationContext

java.lang.Object

org.apache.activemq.filter.MessageEvaluationContext

Direct Known Subclasses:

NonCachedMessageEvaluationContext

public class MessageEvaluationContext
extends java.lang.Object

MessageEvaluationContext is used to cache selection results. A message usually has multiple selectors applied against it. Some selector have a high cost of evaluating against the message. Those selectors may whish to cache evaluation results associated with the message in the MessageEvaluationContext.

Field Summary

Fields

Modifier and Type	Field and Description
protected ActiveMQDestination	destination
protected boolean	dropped
protected boolean	loaded
protected Message	message
protected MessageReference	messageReference

Constructor Summary

Constructors

Constructor and Description
MessageEvaluationContext()

Method Summary

Methods

Modifier and Type	Method and Description
void	clear()
protected void	clearMessageCache() A strategy hook to allow per-message caches to be cleared
ActiveMQDestination	getDestination()
Message	getMessage()
MessageReference	getMessageReference()
boolean	isDropped()
void	setDestination(ActiveMQDestination destination)
void	setMessageReference(MessageReference messageReference)

Methods inherited from class java.lang.Object

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

Field Detail

messageReference

protected MessageReference messageReference

loaded

protected boolean loaded

dropped

protected boolean dropped

message

protected Message message

destination

protected ActiveMQDestination destination

Constructor Detail

MessageEvaluationContext

public MessageEvaluationContext()

Method Detail

isDropped

public boolean isDropped()
                  throws java.io.IOException

Throws:

java.io.IOException

getMessage

public Message getMessage()
                   throws java.io.IOException

Throws:

java.io.IOException

setMessageReference

public void setMessageReference(MessageReference messageReference)

clear

public void clear()

getDestination

public ActiveMQDestination getDestination()

setDestination

public void setDestination(ActiveMQDestination destination)

clearMessageCache

protected void clearMessageCache()

A strategy hook to allow per-message caches to be cleared

getMessageReference

public MessageReference getMessageReference()