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https://issues.apache.org/jira/browse/KARAF-6864?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17248392#comment-17248392
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ASF subversion and git services commented on KARAF-6864:
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Commit 5d9d4a72f2fc4a555ea45057c7efd95f88ab672d in karaf-decanter's branch
refs/heads/master from Jean-Baptiste Onofré
[ https://gitbox.apache.org/repos/asf?p=karaf-decanter.git;h=5d9d4a7 ]
Merge pull request #214 from jbonofre/KARAF-6864
[KARAF-6864] Create groupBy processor
> 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
>
> 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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