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From "Dian Fu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4641) Support branching CEP patterns
Date Thu, 06 Jul 2017 09:21:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16076222#comment-16076222
] 

Dian Fu commented on FLINK-4641:
--------------------------------

@[~dawidwys]   @[~kkl0u] 
One more example:
For pattern: {noformat} a ( b c{1,} | d){2} e  {noformat}
and inputs {{a, b1, c1, c2, d1, d2, e}}
What do you think the output should be?


> Support branching CEP patterns 
> -------------------------------
>
>                 Key: FLINK-4641
>                 URL: https://issues.apache.org/jira/browse/FLINK-4641
>             Project: Flink
>          Issue Type: Sub-task
>          Components: CEP
>            Reporter: Till Rohrmann
>            Assignee: Dian Fu
>
> We should add support for branching CEP patterns to the Pattern API. 
> {code}
>     |--> B --|
>     |        |
> A --         --> D
>     |        |
>     |--> C --|
> {code}
> This feature will require changes to the {{Pattern}} class and the {{NFACompiler}}.



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