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From "Dmitriy V. Ryaboy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1354) UDFs for dynamic invocation of simple Java methods
Date Mon, 23 Aug 2010 20:59:16 GMT

    [ https://issues.apache.org/jira/browse/PIG-1354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12901584#action_12901584
] 

Dmitriy V. Ryaboy commented on PIG-1354:
----------------------------------------

Olga,
There is a follow-up ticket here: https://issues.apache.org/jira/browse/PIG-1551
If that gets committed, I have a pretty detailed explanation of how to use the stuff in http://squarecog.wordpress.com/2010/08/20/upcoming-features-in-pig-0-8-dynamic-invokers/
(happy to put the link in release notes, or just paste the whole post).

> UDFs for dynamic invocation of simple Java methods
> --------------------------------------------------
>
>                 Key: PIG-1354
>                 URL: https://issues.apache.org/jira/browse/PIG-1354
>             Project: Pig
>          Issue Type: New Feature
>    Affects Versions: 0.8.0
>            Reporter: Dmitriy V. Ryaboy
>            Assignee: Dmitriy V. Ryaboy
>             Fix For: 0.8.0
>
>         Attachments: PIG-1354.patch, PIG-1354.patch, PIG-1354.patch
>
>
> The need to create wrapper UDFs for simple Java functions creates unnecessary work for
Pig users, slows down the development process, and produces a lot of trivial classes. We can
use Java's reflection to allow invoking a number of methods on the fly, dynamically, by creating
a generic UDF to accomplish this.

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