Package org.apache.activemq.filter

Class MessageEvaluationContext

java.lang.Object

org.apache.activemq.filter.MessageEvaluationContext

Direct Known Subclasses:

NonCachedMessageEvaluationContext

public class MessageEvaluationContext
extends 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	Description
protected ActiveMQDestination	destination
protected boolean	dropped
protected boolean	loaded
protected Message	message
protected MessageReference	messageReference

Constructor Summary

Constructors

Constructor	Description
MessageEvaluationContext()

Method Summary

Modifier and Type	Method	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 Details

messageReference

protected MessageReference messageReference

loaded

protected boolean loaded

dropped

protected boolean dropped

message

protected Message message

destination

protected ActiveMQDestination destination

Constructor Details

MessageEvaluationContext

public MessageEvaluationContext()

Method Details

isDropped

public boolean isDropped()
                  throws IOException

Throws:

IOException

getMessage

public Message getMessage()
                   throws IOException

Throws:

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()