13.7.2. Aggregator

This is a message aggregation action.  It is an implementation of the aggregator enterprise integration pattern. (see http://www.enterpriseintegrationpatterns.com/Aggregator.html.)

This action relies on all messages having the correct correlation data. This data is set on the message as a property called "aggregatorTag" (Message.Properties). See the ContentBasedRouter and StaticRouter actions.

The data has the following format:

[UUID] ":" [message-number] ":" [message-count]

If all the messages have been received by the aggregator, it returns a new Message containing all the messages as part of the Message.Attachment list (unnamed), otherwise the action returns null.

<action class="org.jboss.soa.esb.actions.Aggregator" name="Aggregator">
    <property name="timeoutInMillies" value="60000"/>
</action>