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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-3708) Scala API for CEP
Date Mon, 18 Apr 2016 16:13:25 GMT

    [ https://issues.apache.org/jira/browse/FLINK-3708?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15245917#comment-15245917
] 

ASF GitHub Bot commented on FLINK-3708:
---------------------------------------

GitHub user StefanRRichter opened a pull request:

    https://github.com/apache/flink/pull/1905

    [FLINK-3708] Scala API for CEP (initial).

    
    This module flink-cep-scala adds a Scala pendant for the  Java CEP API to Flink.
    
    I created Scala classes for Pattern and PatternStream, helper classes, as well as corresponding
tests.
    
    PatternStream in flink-cep is extended to obtain explicit TypeInformation from Scala code.
    Pattern in flink-cep is slightly modified in the type parameters for member previous.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/StefanRRichter/flink dev-cep-scala

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/flink/pull/1905.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 #1905
    
----
commit 306210da82c94f6770e22690799a3f1af9a877e7
Author: Stefan Richter <stefanrichter83@gmail.com>
Date:   2016-04-18T11:10:09Z

    Preparations in Pattern and PatternStream of flink-cep to support flink-cep-scala functionality.

commit 731d96ae78c4dc1b7125966900886225374a3eb5
Author: Stefan Richter <stefanrichter83@gmail.com>
Date:   2016-04-18T11:10:35Z

    Initial commit for flink-cep-scala API.

commit 7da7c14787226d9aa5914a138f632b8b6d5f1335
Author: Stefan Richter <stefanrichter83@gmail.com>
Date:   2016-04-18T13:48:51Z

    [FLINK-3708] Added missing test dependency to pom.

commit 1468bd91aea7d2a757ddeea8b8506b5ad9f3d289
Author: Stefan Richter <stefanrichter83@gmail.com>
Date:   2016-04-18T14:50:53Z

    [FLINK-3708] Pattern in Scala API now uses Option to shield users against null values
from the Java API

commit 9ad8719c5b8767ec2fb0425f55cc7df105e36bcb
Author: Stefan Richter <stefanrichter83@gmail.com>
Date:   2016-04-18T16:04:35Z

    [FLINK-3708] Added test-jar for build phase to pom.

----


> Scala API for CEP
> -----------------
>
>                 Key: FLINK-3708
>                 URL: https://issues.apache.org/jira/browse/FLINK-3708
>             Project: Flink
>          Issue Type: Improvement
>          Components: CEP
>    Affects Versions: 1.1.0
>            Reporter: Till Rohrmann
>            Assignee: Stefan Richter
>
> Currently, The CEP library does not support Scala case classes, because the {{TypeExtractor}}
cannot handle them. In order to support them, it would be necessary to offer a Scala API for
the CEP library.



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