org.springframework.integration.aggregator

Class MessageCountReleaseStrategy

java.lang.Object

org.springframework.integration.aggregator.MessageCountReleaseStrategy

All Implemented Interfaces:

ReleaseStrategy

public class MessageCountReleaseStrategy
extends Object
implements ReleaseStrategy

A ReleaseStrategy that releases only the first n messages, where n is a threshold.

Author:

Dave Syer, Oleg Zhurakousky, Artem Bilan

Constructor Summary

Constructors

Constructor and Description
MessageCountReleaseStrategy() Convenient constructor is only one message is required (threshold=1).
MessageCountReleaseStrategy(int threshold) Construct an instance based on the provided threshold.

Method Summary

Modifier and Type	Method and Description
boolean	canRelease(MessageGroup group) Release the group if it has more messages than the threshold and has not previously been released.

Methods inherited from class java.lang.Object

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

Constructor Detail

MessageCountReleaseStrategy

public MessageCountReleaseStrategy()

Convenient constructor is only one message is required (threshold=1).

MessageCountReleaseStrategy

public MessageCountReleaseStrategy(int threshold)

Construct an instance based on the provided threshold.

Parameters:

threshold - the number of messages to accept before releasing

Method Detail

canRelease

public boolean canRelease(MessageGroup group)

Release the group if it has more messages than the threshold and has not previously been released. It is possible that more messages than the threshold could be released, but only if multiple consumers receive messages from the same group concurrently.

Specified by:

canRelease in interface ReleaseStrategy