[ https://issues.apache.org/jira/browse/OPENJPA-932?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rick Curtis updated OPENJPA-932:
--------------------------------

    Attachment: OPENJPA-932.patch

The bug is that we parse all URLs matching the provided resource name, but only return the PU names from the last URL that was parsed. We should be saving the results after each time we parse a URL and returning ALL results.

In addition to the bug fix I added some error detection. If there are persistence unit name collisions for the provided resource name, a WARNING message will be logged.  See below for a snippet from a test run.

...
     [java] 297  WARN   [main] openjpa.Persistence - The persistence unit "jpa.connection-pool" was found in the following resources "[file:/C:/jpa/workspace-samples/projects/j
pa.connection.pool/bin/META-INF/persistence.xml, jar:file:/C:/jpa/workspace-samples/projects/lib/test-bad.jar!/META-INF/persistence.xml]". Please correct the problem as it may
have unexpected results.
...

> Runtime enhancer doesn't work propery if there is a trailing persistence.xml file on the classpath.
> ---------------------------------------------------------------------------------------------------
>
>                 Key: OPENJPA-932
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-932
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 1.2.0, 2.0.0-M1, 2.0.0
>            Reporter: Rick Curtis
>         Attachments: OPENJPA-932.patch
>
>
> I have an application where I am using runtime class enhancement via the javaagent and I set openjpa.RuntimeUnenhancedClasses=unsupported. My application works fine when running on 1.1.0 but when I moved to 1.2.0 (and 2.0.0) I started getting errors because my classes aren't being enhanced. 
> After debugging I determined that I had a jar on the end of my classpath that had a META-INF/persistence.xml file in it. The extra persistence.xml file has no PUs defined, and should have been ignored. When I removed that jar from my classpath things starting working again. It also works if I put my META-INF/persistence.xml file on the end of my classpath.

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