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Date: Fri, 28 May 2010 10:22:38 -0400 (EDT)
From: "Edward Capriolo (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Commented: (HIVE-1265) Function Registry should should
 auto-detect UDFs  from UDF Description
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    [ https://issues.apache.org/jira/browse/HIVE-1265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12872996#action_12872996 ] 

Edward Capriolo commented on HIVE-1265:
---------------------------------------

{noformat}
 public static List<Class> getClassesForPackage(String packageName, Class classType){
+    List<Class> matchingClasses = new ArrayList<Class>();
+    File directory = null;
+    System.out.println(packageName.replace('.', File.separatorChar));
+    URL u = Thread.currentThread().getContextClassLoader()
+    //URL u = new Object().getClass().c
+    .getResource(packageName.replace('.', File.separatorChar));
{noformat}

It seems like this section of code only picks up classes in ql/test/org.apache.hadoop.hive.ql.udf. This must have something to do with classloaders/threads/ and getResource(). It seems like getResource is unaware that two folders could be responsible for the same resource. Or I have to find a better way to do this.

> Function Registry should should auto-detect UDFs  from UDF Description
> ----------------------------------------------------------------------
>
>                 Key: HIVE-1265
>                 URL: https://issues.apache.org/jira/browse/HIVE-1265
>             Project: Hadoop Hive
>          Issue Type: Improvement
>            Reporter: Edward Capriolo
>            Assignee: Edward Capriolo
>         Attachments: hive-1265-patch.diff
>
>
> We should be able to register functions dynamically.

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