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https://issues.apache.org/jira/browse/FLINK-6927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16071522#comment-16071522
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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_r125173871
--- Diff:
flink-libraries/flink-cep/src/main/java/org/apache/flink/cep/nfa/compiler/NFAStateNameHandler.java
---
@@ -55,6 +55,11 @@ public void checkNameUniqueness(String name) {
if (usedNames.contains(name)) {
throw new MalformedPatternException("Duplicate pattern
name: " + name + ". Names must be unique.");
}
+ usedNames.add(name);
+ }
+
--- End diff --
updated
> 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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