[jira] Commented: (CAMEL-1640) BatchConsumer - Allow consumers to be batch aware

["Claus Ibsen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/activemq/browse/CAMEL-1640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=51853#action_51853 ] 

Claus Ibsen commented on CAMEL-1640:
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First commit in: 777808.

> BatchConsumer - Allow consumers to be batch aware
> -------------------------------------------------
>
>                 Key: CAMEL-1640
>                 URL: https://issues.apache.org/activemq/browse/CAMEL-1640
>             Project: Apache Camel
>          Issue Type: New Feature
>          Components: camel-core
>    Affects Versions: 2.0-M1
>            Reporter: Claus Ibsen
>            Assignee: Claus Ibsen
>             Fix For: 2.0.0
>
>
> Most of the consumers can handle batch but they dont decorate the Exchange with this information.
> Only the file component does this.
> We should expose a {{BatchConsumer}} interface to mark a consumer as being batch capable.
> Then this consumer should be able to round up the exchanges beforehand they are processed. This allows us to gather the total number of exchanges in the batch.
> And then afterwards loop this list and emit each exchange with information about: current index out of total.
> This also makes it much easier to support aggregator afterwards as the aggregator will be able to support BatchConsumer and then know when it has the complete batch aggregated.
> In camel-core its the *file* component that should be batch aware.
> Other components such as: mail, rss, atom, and many others can support this as well.

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