[jira] [Commented] (FLINK-6248) Make the optional() available to all offered patterns.

["Kostas Kloudas (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-6248?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15981353#comment-15981353 ] 

Kostas Kloudas commented on FLINK-6248:
---------------------------------------

This is the PR that addresses it https://github.com/apache/flink/pull/3761


> Make the optional() available to all offered patterns.
> ------------------------------------------------------
>
>                 Key: FLINK-6248
>                 URL: https://issues.apache.org/jira/browse/FLINK-6248
>             Project: Flink
>          Issue Type: Improvement
>          Components: CEP
>    Affects Versions: 1.3.0
>            Reporter: Kostas Kloudas
>            Assignee: Kostas Kloudas
>             Fix For: 1.3.0
>
>
> Currently the {{optional()}} quantifier is available as a separate pattern. This issue proposes to make it available as a flag to all patterns.
> This implies that: 
> 1) a singleton pattern with {{optional=true}} will become the current {{OPTIONAL}}, 
> 2) a {{oneToMany}} will become {{zeroToMany}}, 
> 3) the {{zeroToMany}} will not exist as a direct option in the {{Pattern}} class, and 
> 4) the {{times()}} will require some changes in the {{NFACompiler}}.



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