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https://issues.apache.org/jira/browse/KARAF-6864?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean-Baptiste Onofré resolved KARAF-6864.
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Fix Version/s: decanter-2.6.0
Resolution: Fixed
> Add a groupBy 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
> Priority: Major
> 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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