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From: Cecil Westerhof <Cecil@decebal.nl>
Newsgroups: comp.lang.java.programmer
Subject: Re: I can not successfully call Persistence.createEntityManagerFactory
Date: Fri, 11 Sep 2015 18:39:43 +0200
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On Wednesday  9 Sep 2015 15:23 CEST, Cecil Westerhof wrote:

> I have to implement some JPA functionalities. It is fairly new to
> me, so it is no wonder that things go wrong.
>
> I am trying to call: emf =
> Persistence.createEntityManagerFactory("this-persistence-unit");
>
> In my persistence.xml the name of persistence-unit is
> 'this-persistence-unit'.
>
> But the call gives: javax.persistence.PersistenceException: Explicit
> persistence provider error(s) occurred for "this-persistence-unit"
> after trying the
> com.ibm.websphere.persistence.PersistenceProviderImpl returned:
> <openjpa-2.1.2-SNAPSHOT-r422266:1530146 nonfatal general error> org.
> at org.apache.openjpa.lib.meta.XMLMetaDataParser.parseNewResource
> (XMLMetaDataParser.java:424)
>
> So I am doing something wrong. Does anyone have an idea what it
> could be that I am doing wrong?
>
> I am using the same persistence.xml as is used in another project.
> But they do not have any idea how persistence is implemented, so
> they cannot help me. :'-(

It turned out there files where not correct: I needed to change quite
a few things. Why they do not get errors is a mystery for me.

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof