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https://issues.apache.org/jira/browse/OPENJPA-1803?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Donald Woods updated OPENJPA-1803:
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Component/s: competitive
> Unwrap EntityManager to Connection
> ----------------------------------
>
> Key: OPENJPA-1803
> URL: https://issues.apache.org/jira/browse/OPENJPA-1803
> Project: OpenJPA
> Issue Type: Improvement
> Components: competitive, jpa
> Affects Versions: 2.0.1
> Reporter: Harald Wellmann
>
> This is currently the recommended way to access the javax.sql.Connection
> underlying an EntityManager:
> OpenJPAEntityManager oem = OpenJPAPersistence.cast(em);
> Connection con = (Connection) oem.getConnection();
> It would be more convenient to simply write
> Connection con = em.unwrap(Connection.class);
> That way, the client needing to access the Connection only depends on the
> javax.persistence API and not on org.apache.openjpa.*.
> I believe the JPA 2.0 spec neither mandates nor forbids this functionality.
> It is supported by Eclipselink 2.x.
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