You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@flink.apache.org by "Robert Thorman (JIRA)" <ji...@apache.org> on 2016/06/20 19:39:58 UTC
[jira] [Assigned] (FLINK-3319) Add or operator to CEP's pattern API
[ https://issues.apache.org/jira/browse/FLINK-3319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Thorman reassigned FLINK-3319:
-------------------------------------
Assignee: Robert Thorman
> Add or operator to CEP's pattern API
> ------------------------------------
>
> Key: FLINK-3319
> URL: https://issues.apache.org/jira/browse/FLINK-3319
> Project: Flink
> Issue Type: Improvement
> Components: CEP
> Affects Versions: 1.0.0
> Reporter: Till Rohrmann
> Assignee: Robert Thorman
> Priority: Minor
>
> Adding an {{or}} operator to CEP's pattern API would be beneficial. This would considerably extend the set of supported patterns. The {{or}} operator lets you define multiple succeeding pattern states for the next stage.
> {code}
> Pattern.begin("start").next("middle1").where(...).or("middle2").where(...)
> {code}
> In order to implement the {{or}} operator, one has to extend the {{Pattern}} class. Furthermore, the {{NFACompiler}} has to be extended to generate two resulting pattern states in case of an {{or}} operator.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)