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https://issues.apache.org/activemq/browse/CAMEL-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=51752#action_51752
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Claus Ibsen commented on CAMEL-1550:
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I have updated the wiki page with a note on the correlation expression using
header(orderId).
The splitter already insert an INDEX and TOTAL headers and it has in fact a
build in aggregator as well. But since the EIP pattern indicate to use a
splitter and aggregator Jonathan created the sample according to this fact.
However this build in aggregator is only useable for *inOut* (request/reply)
messaging.
We do have some rough ideas to improve the splitter, resequencer and aggregator
in the future so its aggregation can more easily be configured to use a
sequence of exchanges generated by a poller, eg. for instance a filer poller.
So we can aggregate the files that was polled by default.
> Improve first user experience of a composed message processor
> -------------------------------------------------------------
>
> Key: CAMEL-1550
> URL: https://issues.apache.org/activemq/browse/CAMEL-1550
> Project: Apache Camel
> Issue Type: Improvement
> Components: camel-core, documentation, examples
> Affects Versions: 2.0-M1
> Reporter: Frank Schwarz
> Fix For: 2.0.0
>
>
> With some little changes, the pattern "composed message processor" could be
> realized more easily. I am proposing to let the splitter component by default
> insert on each of its output-messages the message id of its input-message as
> a standardized header. The aggregator component then should, if nothing else
> is specified, use this header as a correlation id for the aggregation. So,
> the splitting-aggregation-stuff works out-of-the box.
> see also:
> http://www.nabble.com/Composed-Message-Processor-td23127178s22882.html
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