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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-7588) Using type variable in UDF
Date Tue, 16 Sep 2014 01:50:37 GMT

     [ https://issues.apache.org/jira/browse/HIVE-7588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Navis updated HIVE-7588:
------------------------
    Attachment:     (was: HIVE-7588.4.patch.txt)

> Using type variable in UDF
> --------------------------
>
>                 Key: HIVE-7588
>                 URL: https://issues.apache.org/jira/browse/HIVE-7588
>             Project: Hive
>          Issue Type: Improvement
>          Components: UDF
>            Reporter: Navis
>            Assignee: Navis
>            Priority: Trivial
>         Attachments: HIVE-7588.1.patch.txt, HIVE-7588.2.patch.txt, HIVE-7588.3.patch.txt,
HIVE-7588.4.patch.txt
>
>
> From http://www.mail-archive.com/user@hive.apache.org/msg12307.html
> Support type variables in UDF
> {code}
> public <T> T evaluate(final T s, final String column_name, final int bitmap) throws
Exception {
>      if (s instanceof Double)
>             return (T) new Double(-1.0);
>      Else if( s instance of Integer)
>             Return (T) new Integer(-1) ;  
> …..
> }
> {code}



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