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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4126) You can't invoke a table function which is stored in a jar file inside the database
Date Fri, 27 Mar 2009 15:20:50 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4126?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Rick Hillegas updated DERBY-4126:

    Attachment: derby-4126-01-aa-useSessionClassloader.diff

Attaching derby-4126-01-aa-useSessionClassloader.diff. This patch causes Derby to lookup VTI
optimizer overrides using the session's classloader. This fixes the bug. I will run regression
tests now.

Touches the following files:

M      java/engine/org/apache/derby/impl/sql/compile/FromVTI.java

Use the session class loader when looking for optimizer overrides.

A      java/testing/org/apache/derbyTesting/functionTests/tests/lang/dummy_vti.jar
M      java/testing/org/apache/derbyTesting/functionTests/tests/lang/DatabaseClassLoadingTest.java

New test to verify that this fixes the problem.

> You can't invoke a table function which is stored in a jar file inside the database
> -----------------------------------------------------------------------------------
>                 Key: DERBY-4126
>                 URL: https://issues.apache.org/jira/browse/DERBY-4126
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions:,,,
>            Reporter: Rick Hillegas
>            Assignee: Rick Hillegas
>         Attachments: derby-4126-01-aa-useSessionClassloader.diff
> You get a ClassNotFoundException when you try to invoke a table function which lives
in a jar file stored inside the database. This is because FromVTI.implementsDerbyStyleVTICosting()
looks up the class using Class.forName() rather than using the session classloader. A similar
bug is in FromVTI.getVTICosting(). This bug was reported by Krzysztof N in the following user
list thread: http://www.nabble.com/Uinable-to-use-Table-function-due-to-java.lang.ClassNotFoundException--while-class-is-clearly-reachable..-td22478383.html#a22699492

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