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From "Sebastien Petrucci (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-7434) Provide a way to force the completion of a aggregate exchange from an external event
Date Tue, 26 Aug 2014 20:19:58 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-7434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14111248#comment-14111248
] 

Sebastien Petrucci commented on CAMEL-7434:
-------------------------------------------

Hello,
I tend to agree with Claus. Using a marker header would not help much in the scenario where
you want to pre-complete a group to obey a maximum size limit.
I started to prototype a sample code some time ago, I can share this with you if this may
help.
Regards,
Sebastien.

> Provide a way to force the completion of a aggregate exchange from an external event
> ------------------------------------------------------------------------------------
>
>                 Key: CAMEL-7434
>                 URL: https://issues.apache.org/jira/browse/CAMEL-7434
>             Project: Camel
>          Issue Type: New Feature
>          Components: camel-core, eip
>    Affects Versions: 2.13.0
>            Reporter: Susan Javurek
>            Assignee: Ben O'Day
>             Fix For: Future
>
>
> There is a way to do this by creating a "trigger" exchange that is handled in a special
way by the aggregation strategy and a completion predicate. But this solution is quite intrusive
and painful to write.
> It would actually be much easier if the AggregateProcessor would implement and expose
the following methods:
> public void forceCompletionOfGroup(String key)
> public Expression getCorrelationExpression()
> This way, it becomes possible to control "externally" an aggregator without having to
implement some intrusive logic.



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