org.springframework.integration.aggregator
Class ResequencingMessageGroupProcessor

java.lang.Object
  org.springframework.integration.aggregator.ResequencingMessageGroupProcessor

All Implemented Interfaces:

MessageGroupProcessor

public class ResequencingMessageGroupProcessor
extends java.lang.Object
implements MessageGroupProcessor

This class implements all the strategy interfaces needed for a default resequencer.

Since:

2.0

Constructor Summary

ResequencingMessageGroupProcessor()

Method Summary

java.lang.Object	processMessageGroup(MessageGroup group) Process the given MessageGroup.
void	setComparator(java.util.Comparator<Message<?>> comparator) A comparator to use to order messages before processing.

Methods inherited from class java.lang.Object

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

Constructor Detail

ResequencingMessageGroupProcessor

public ResequencingMessageGroupProcessor()

Method Detail

setComparator

public void setComparator(java.util.Comparator<Message<?>> comparator)

A comparator to use to order messages before processing. The default is to order by sequence number.

Parameters:

comparator - the comparator to use to order messages

processMessageGroup

public java.lang.Object processMessageGroup(MessageGroup group)

Description copied from interface: MessageGroupProcessor

Process the given MessageGroup. Implementations are free to return as few or as many messages based on the invocation as needed. For example an aggregating processor will return only a single message representing the group, while a resequencing processor will return all messages whose preceding sequence has been satisfied.

If a multiple messages are returned the return value must be a Collection<Message>.

Specified by:

processMessageGroup in interface MessageGroupProcessor