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https://issues.apache.org/jira/browse/DATAFU-92?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14585172#comment-14585172
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Zach Beniash commented on DATAFU-92:
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Actually the third parameter can have other values then null.
As a matter of fact I already implemented the UDF and tested it, but didn't got
the time to align my environment for submitting the code (and probably won't
have the time soon). So I attached to this issue the code + example for the
third parameter, to be used as a reference for your implementation.
Please see attached files.
https://issues.apache.org/jira/secure/attachment/12739514/TupleFromBag.java
> Create UDF to extract tuple out of bad in a specified index
> -----------------------------------------------------------
>
> Key: DATAFU-92
> URL: https://issues.apache.org/jira/browse/DATAFU-92
> Project: DataFu
> Issue Type: New Feature
> Affects Versions: 1.3.0
> Reporter: Zach Beniash
> Labels: UDF
> Fix For: 1.3.0
>
> Attachments: TupleFromBag.java
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> Create a new UDF that is similar to "FirstTupleFromBag" but this one will be
> more general, and not only the first tuple.
> This new UDF can be called "TupleFromBag" and will get three parameters:
> 1. DataBag
> 2. Index
> 3. Optional Default Tuple
> There should be a consideration to refactor FirstTupleFromBag to call
> TupleFromBag, for reusability consideration.
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