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From "Zheng Shao (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-45) Hive: UDFTemplate and support of complex object
Date Thu, 11 Dec 2008 07:23:44 GMT

    [ https://issues.apache.org/jira/browse/HIVE-45?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655553#action_12655553

Zheng Shao commented on HIVE-45:

I plan to add a new package: ql.udf.template for this.
CASE and IF will be implemented as a subclass of this UDFTemplate.

This will also allow functions with dynamic number of parameters.

> Hive: UDFTemplate and support of complex object
> -----------------------------------------------
>                 Key: HIVE-45
>                 URL: https://issues.apache.org/jira/browse/HIVE-45
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
> We should allow users to define UDF template (in the sense of c++ template that can take
args of different types), and let UDF take complex objects.
> This should be pretty simple given that we have the ObjectInspector which can navigate
through the internal structure of the object.

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