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https://issues.apache.org/jira/browse/FLINK-7147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16099829#comment-16099829
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ASF GitHub Bot commented on FLINK-7147:
---------------------------------------
Github user dawidwys commented on a diff in the pull request:
https://github.com/apache/flink/pull/4296#discussion_r129262270
--- Diff:
flink-libraries/flink-cep/src/main/java/org/apache/flink/cep/pattern/Pattern.java
---
@@ -492,4 +506,10 @@ private void checkIfQuantifierApplied() {
"Current quantifier is: " + quantifier);
}
}
+
+ private void checkIfNoFollowedByAny() {
+ if (quantifier.getConsumingStrategy() ==
ConsumingStrategy.SKIP_TILL_ANY) {
--- End diff --
I think it is a valid combination. I think the InnerConsumingStrategy
should not be `SKIP_TILL_ANY`.
So `followedByAny("loop").oneOrMore().greedy()` in my opinion is a valid
one, but `followedByAny("loop").oneOrMore().allowCombinations().greedy()` is
not.
> Support greedy quantifier in CEP
> --------------------------------
>
> Key: FLINK-7147
> URL: https://issues.apache.org/jira/browse/FLINK-7147
> Project: Flink
> Issue Type: Sub-task
> Components: CEP, Table API & SQL
> Reporter: Dian Fu
> Assignee: Dian Fu
>
> Greedy quantifier will try to match the token as many times as possible. For
> example, for pattern {{a b* c}} (skip till next is used) and inputs {{a b1 b2
> c}}, if the quantifier for {{b}} is greedy, it will only output {{a b1 b2 c}}.
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