BatchConsumer - Allow consumers to be batch aware
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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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