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From "Claudio Corsi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAMEL-5579) Add an abstract grouped by aggregator strategy that users can extend from.
Date Fri, 07 Sep 2012 20:38:07 GMT
Claudio Corsi created CAMEL-5579:
------------------------------------

             Summary: Add an abstract grouped by aggregator strategy that users can extend
from.
                 Key: CAMEL-5579
                 URL: https://issues.apache.org/jira/browse/CAMEL-5579
             Project: Camel
          Issue Type: Improvement
          Components: camel-core
            Reporter: Claudio Corsi
            Priority: Minor
             Fix For: 2.11.0


The current GroupedExchangeAggregationStrategy will combine a list of exchange instances for
a given correlation expression and propagate the exchange with that list.   This is great
as long as users are content with processing the list of exchanges.  

What about users that would like to extract data from the exchange and add that to the forwarded
list?  This is something that require users to create their own strategy.

What I propose is that we provide base class for users to extend such that it manages the
grouped list and have the user state and return the type of instances that will be added to
the grouped list.

I will attach a base class that users can extend and an example of a sub-classed version that
will return a list of exchange instances like the default GroupedExchangeAggregateStrategy
camel core class.


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