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https://issues.apache.org/jira/browse/HIVE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12706196#action_12706196
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Ashish Thusoo commented on HIVE-471:
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nice idea. I like the concept.
You probably should use GenericUDF framework instead of the UDF framework. That
way you will be easily able to pass variable number of arguments to the
function.
> A UDF for simple reflection
> ---------------------------
>
> Key: HIVE-471
> URL: https://issues.apache.org/jira/browse/HIVE-471
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Edward Capriolo
> Assignee: Edward Capriolo
> Priority: Minor
> Fix For: 0.4.0
>
> Attachments: hive-471.diff
>
>
> There are many methods in java that are static and have no arguments or can
> be invoked with one simple parameter. More complicated functions will require
> a UDF but one generic one can work as a poor-mans UDF.
> {noformat}
> SELECT reflect("java.lang.String", "valueOf", 1), reflect("java.lang.String",
> "isEmpty")
> FROM src LIMIT 1;
> {noformat}
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