[ https://issues.apache.org/jira/browse/FLINK-7169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16087046#comment-16087046 ]
ASF GitHub Bot commented on FLINK-7169: --------------------------------------- GitHub user yestinchen opened a pull request: https://github.com/apache/flink/pull/4331 [FLINK-7169][CEP] Support AFTER MATCH SKIP function in CEP Thanks for contributing to Apache Flink. Before you open your pull request, please take the following check list into consideration. If your changes take all of the items into account, feel free to open your pull request. For more information and/or questions please refer to the [How To Contribute guide](http://flink.apache.org/how-to-contribute.html). In addition to going through the list, please provide a meaningful description of your changes. - [ ] General - The pull request references the related JIRA issue ("[FLINK-XXX] Jira title text") - The pull request addresses only one issue - Each commit in the PR has a meaningful commit message (including the JIRA id) - [ ] Documentation - Documentation has been added for new functionality - Old documentation affected by the pull request has been updated - JavaDoc for public methods has been added - [ ] Tests & Build - Functionality added by the pull request is covered by tests - `mvn clean verify` has been executed successfully locally or a Travis build has passed You can merge this pull request into a Git repository by running: $ git pull https://github.com/yestinchen/flink FLINK-7169 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/flink/pull/4331.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #4331 ---- commit 28f2e0ab2b6fd38864017fc64d2c76a65c8f7574 Author: Yestin <873915...@qq.com> Date: 2017-07-14T08:41:51Z [FLINK-7169][CEP] Support AFTER MATCH SKIP function in CEP ---- > Support AFTER MATCH SKIP function in CEP library API > ---------------------------------------------------- > > Key: FLINK-7169 > URL: https://issues.apache.org/jira/browse/FLINK-7169 > Project: Flink > Issue Type: Sub-task > Components: CEP > Reporter: Yueting Chen > Assignee: Yueting Chen > > In order to support Oracle's MATCH_RECOGNIZE on top of the CEP library, we > need to support AFTER MATCH SKIP function in CEP API. > There're four options in AFTER MATCH SKIP, listed as follows: > 1. AFTER MATCH SKIP TO NEXT ROW: resume pattern matching at the row after the > first row of the current match. > 2. AFTER MATCH SKIP PAST LAST ROW: resume pattern matching at the next row > after the last row of the current match. > 3. AFTER MATCH SKIP TO FIST *RPV*: resume pattern matching at the first row > that is mapped to the row pattern variable RPV. > 4. AFTER MATCH SKIP TO LAST *RPV*: resume pattern matching at the last row > that is mapped to the row pattern variable RPV. > I think we can introduce a new function to `CEP` class, which takes a new > parameter as AfterMatchSKipStrategy. > The new API may looks like this > {code} > public static <T> PatternStream<T> pattern(DataStream<T> input, Pattern<T, ?> > pattern, AfterMatchSkipStrategy afterMatchSkipStrategy) > {code} > We can also make `SKIP TO NEXT ROW` as the default option, because that's > what CEP library behaves currently. -- This message was sent by Atlassian JIRA (v6.4.14#64029)