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Posted to dev@pig.apache.org by "Julien Le Dem (JIRA)" <ji...@apache.org> on 2011/01/17 07:49:44 UTC
[jira] Commented: (PIG-1794) Javascript support for Pig embedding
and UDFs in scripting languages
[ https://issues.apache.org/jira/browse/PIG-1794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12982498#action_12982498 ]
Julien Le Dem commented on PIG-1794:
------------------------------------
see review: https://reviews.apache.org/r/321/
> Javascript support for Pig embedding and UDFs in scripting languages
> --------------------------------------------------------------------
>
> Key: PIG-1794
> URL: https://issues.apache.org/jira/browse/PIG-1794
> Project: Pig
> Issue Type: New Feature
> Components: impl
> Affects Versions: 0.9.0
> Reporter: Julien Le Dem
> Assignee: Julien Le Dem
> Fix For: 0.9.0
>
> Attachments: jsScripting.patch
>
>
> The attached patch proposes a javascript implementation for Pig embedding and UDFs in scripting languages.
> It is similar to the Jython implementation and uses Rhino provided in the JDK.
> some differences:
> - output schema is provided by: <functionName>.outSchema="<schema>" as javascript does not have annotations or decorators but functions are first class objects
> - tuples are converted to objects using the input schema (the other way around using the output schema)
> The attached patch is not final yet. In particular it lacks unit tests.
> See test/org/apache/pig/test/data/tc.js for the "transitive closure" example
> See the following JIRAs for more context:
> https://issues.apache.org/jira/browse/PIG-928
> https://issues.apache.org/jira/browse/PIG-1479
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