[jira] [Created] (KARAF-6864) Add a group processor

["Jean-Baptiste Onofré (Jira)" <ji...@apache.org>]

Jean-Baptiste Onofré created KARAF-6864:
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             Summary: Add a group processor
                 Key: KARAF-6864
                 URL: https://issues.apache.org/jira/browse/KARAF-6864
             Project: Karaf
          Issue Type: New Feature
          Components: decanter
            Reporter: Jean-Baptiste Onofré
            Assignee: Jean-Baptiste Onofré
             Fix For: decanter-2.6.0


The user can define a set of properties and we group all events with same properties value, and send at timeout.

For instance, we can group like:
{code:java}
 {'field1': "a", "field2": 'b', "field3": "c"} -> group by: a, b -> Map<Pair<a, b>, List {'field1': "a", "field2": 'b', "field3": "c"} >
if b = null -> Map<Pair<a, null>,  List {'field1': "a", "field2": null, "field3": "c"} >
if a = null -> Map<Pair<null, b>, List {'field1': null, "field2": "b", "field3": "c"} >
if a = null, b = null -> Map<Pair<null, null>, List {'field1': null, "field2": null, "field3": "c"} > {code}



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