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From "Aniket Mokashi (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-928) UDFs in scripting languages
Date Thu, 08 Jul 2010 00:20:52 GMT

    [ https://issues.apache.org/jira/browse/PIG-928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886163#action_12886163
] 

Aniket Mokashi commented on PIG-928:
------------------------------------

I got what you mean, if user needs a generic square function he can write:
{code}
#!/usr/bin/python
@outputSchemaFunction(\"squareSchema\")
def square(number):
    return (number * number)
def squareSchema(input):
    return input
{code}
I will make changes so that I can use similar approach as pig-greek. Since outputschema needs
to know both input and name of outputSchemaFunction current code would need further changes.

> UDFs in scripting languages
> ---------------------------
>
>                 Key: PIG-928
>                 URL: https://issues.apache.org/jira/browse/PIG-928
>             Project: Pig
>          Issue Type: New Feature
>            Reporter: Alan Gates
>            Assignee: Aniket Mokashi
>             Fix For: 0.8.0
>
>         Attachments: calltrace.png, package.zip, PIG-928.patch, pig-greek.tgz, pig.scripting.patch.arnab,
pyg.tgz, RegisterPythonUDF2.patch, RegisterPythonUDF3.patch, RegisterPythonUDF4.patch, RegisterPythonUDFFinale.patch,
RegisterPythonUDFFinale3.patch, RegisterScriptUDFDefineParse.patch, scripting.tgz, scripting.tgz,
test.zip
>
>
> It should be possible to write UDFs in scripting languages such as python, ruby, etc.
 This frees users from needing to compile Java, generate a jar, etc.  It also opens Pig to
programmers who prefer scripting languages over Java.

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