[jira] [Commented] (FLINK-6927) Support pattern group in CEP

[ASF GitHub Bot (JIRA)]

    [ 
https://issues.apache.org/jira/browse/FLINK-6927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16071519#comment-16071519
 ] 

ASF GitHub Bot commented on FLINK-6927:
---------------------------------------

Github user dianfu commented on a diff in the pull request:

    https://github.com/apache/flink/pull/4153#discussion_r125173760
  
    --- Diff: 
flink-libraries/flink-cep/src/main/java/org/apache/flink/cep/pattern/Pattern.java
 ---
    @@ -366,8 +366,9 @@ public Quantifier getQuantifier() {
                checkIfNoNotPattern();
                checkIfQuantifierApplied();
                this.quantifier = 
Quantifier.times(quantifier.getConsumingStrategy());
    -           if (from == 0) {
    --- End diff --
    
    Thanks for the suggestion, created PR: 
https://github.com/apache/flink/pull/4242


> Support pattern group in CEP
> ----------------------------
>
>                 Key: FLINK-6927
>                 URL: https://issues.apache.org/jira/browse/FLINK-6927
>             Project: Flink
>          Issue Type: Sub-task
>          Components: CEP
>            Reporter: Dian Fu
>            Assignee: Dian Fu
>
> We should add support for pattern group. This would enrich the set of 
> supported patterns. For example, users can write patterns like this with this 
> feature available:
> {code}
>  A --> (B --> C.times(3)).optional() --> D
> {code}
> or
> {code}
> A --> (B --> C).times(3) --> D
> {code}



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