openjpac Ant task should not require persistence.xml
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                 Key: OPENJPA-467
                 URL: https://issues.apache.org/jira/browse/OPENJPA-467
             Project: OpenJPA
          Issue Type: Bug
    Affects Versions: 1.0.1
            Reporter: Daniel Dyer


The Ant enhancer task requires a persistence.xml file in order to function 
correctly.  It needs this even if there is no useful information in it (the 
list of classes to enhance is provided separately and the database settings are 
irrelevant).

You can't use the persistence.xml that will be deployed with the persistence 
unit because it may refer to a JAR file that has not been built yet (because 
the classes have to be enhanced before being packaged).  So you have to create 
a separate persistence.xml just for the build step.

The task should function even if no persistence.xml is available.  Perhaps it 
would also be useful to be able to optionally specify properties as nested 
elements in the build.xml rather than in persistence.xml.

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