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From "Chinmay Kolhatkar (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (APEXMALHAR-2082) Data Filter Operator
Date Tue, 24 May 2016 22:05:12 GMT

     [ https://issues.apache.org/jira/browse/APEXMALHAR-2082?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Chinmay Kolhatkar resolved APEXMALHAR-2082.
       Resolution: Fixed
    Fix Version/s: 3.5.0

> Data Filter Operator 
> ---------------------
>                 Key: APEXMALHAR-2082
>                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-2082
>             Project: Apache Apex Malhar
>          Issue Type: New Feature
>            Reporter: Pradeep A. Dalvi
>            Assignee: Pradeep A. Dalvi
>             Fix For: 3.5.0
> Data Filter Operator which will allow apex users to filter (select/drop) tuples based
on the certain condition from incoming stream.
> Use case:
> -------------
> In many cases, not all tuples are of interest for the downstream operators. In such cases,
one may want select/filter out tuples to downstream. Also one may want to process tuples which
did not meet the condition/expression.
> Functionality:
> -----------------
> 1. Any tuple for which expression could not be evaluated shall be emitted on error output
> 2. Filter operator shall receive POJO as input tuple and emit POJO on either of remaining
output ports i.e. truePort and falsePort. As the output ports' name signify, when condition
is met then the POJO shall be emitted on truePort and if condition is not met then that POJO
shall be emitted on falsePort.
> 3. Operator needs condition/expression as a input param. This condition is based on expression
language support we already have in Malhar.

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