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Posted to dev@hive.apache.org by "Navis (JIRA)" <ji...@apache.org> on 2014/08/01 03:19:39 UTC
[jira] [Updated] (HIVE-7588) Using type variable in UDF
[ https://issues.apache.org/jira/browse/HIVE-7588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Navis updated HIVE-7588:
------------------------
Attachment: HIVE-7588.1.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
>
>
> 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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