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https://issues.apache.org/jira/browse/FLINK-4641?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16077624#comment-16077624
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Dian Fu commented on FLINK-4641:
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Hi [~dawidwys], just think of one more use case:
for the above second example, pattern {noformat}a ( ( b c{1,} ) | d ) {2}
e{noformat}
if the inputs are {{a, b1, c1, d1, c2, d2, e}}, what do you think the output
should be? Will it contain {{a b1 c1 c2 d2 e}} or {{a d1 d2 e}}?
> 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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