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OSGI + human task persistence
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created by <a href="https://community.jboss.org/people/grischan">Grischan Engel</a> in <i>jBPM</i> - <a href="https://community.jboss.org/message/754461#754461">View the full discussion</a>
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<div class="jive-rendered-content"><p style="text-align: justify;">Hi,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="text-align: justify;">I am currently trying to use human tasks (jBPM 5.3)  in an application based on OSGI (Equinox).  </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="text-align: justify;">As far as I know Hibernate doesn’t really support OSGI. So I decided to use Eclipse Gemini JPA for persistence. Though I can`t make it work. Seemingly the OSGI JPA specification requires all entities and metadata to be contained in a single persistence bundle. </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="text-align: justify;">I get the following Exception:</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><pre class="jive-pre"><code class="jive-code jive-java">javax.persistence.PersistenceException: Exception [EclipseLink-28018] (Eclipse Persistence Services - 2.4.0.v20120608-r11652): org.eclipse.persistence.exceptions.EntityManagerSetupException
Exception Description: Predeployment of PersistenceUnit [jbpm.unit] failed.
Internal Exception: Exception [EclipseLink-7215] (Eclipse Persistence Services - 2.4.0.v20120608-r11652): org.eclipse.persistence.exceptions.ValidationException
Exception Description: Could not load the field named [processInstanceId] on the <font color="navy"><b>class</b></font> [<font color="navy"><b>class</b></font> org.jbpm.persistence.processinstance.ProcessInstanceInfo]. Ensure there is a corresponding field with that name defined on the class.
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.createPredeployFailedPersistenceException(EntityManagerSetupImpl.java:1541)
    at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.predeploy(EntityManagerSetupImpl.java:1532)
    at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.callPredeploy(JPAInitializer.java:98)
    at org.eclipse.persistence.internal.jpa.deployment.JPAInitializer.initPersistenceUnits(JPAInitializer.java:306)
    at org.eclipse.gemini.jpa.provider.GeminiOSGiInitializer.initializeFromBundle(GeminiOSGiInitializer.java:120)
    at org.eclipse.gemini.jpa.provider.EclipseLinkOSGiProvider.assignPersistenceUnitsInBundle(EclipseLinkOSGiProvider.java:193)
    at org.eclipse.gemini.jpa.PersistenceBundleExtender.tryAssigningPersistenceUnitsInBundle(PersistenceBundleExtender.java:175)
    at org.eclipse.gemini.jpa.PersistenceBundleExtender.bundleChanged(PersistenceBundleExtender.java:317)
    at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:847)
    at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
    at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)
    at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEventPrivileged(Framework.java:1569)
    at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1505)
    at org.eclipse.osgi.framework.internal.core.Framework.publishBundleEvent(Framework.java:1500)
    at org.eclipse.osgi.framework.internal.core.PackageAdminImpl.processDelta(PackageAdminImpl.java:486)
    at org.eclipse.osgi.framework.internal.core.PackageAdminImpl.doResolveBundles(PackageAdminImpl.java:251)
    at org.eclipse.osgi.framework.internal.core.PackageAdminImpl$1.run(PackageAdminImpl.java:174)
    at java.lang.Thread.run(Unknown Source)
</code></pre><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="text-align: justify;">Could you give me some hints which setup might work to use human tasks in an OSGI environment? Does someone have a working project in an OSGI environment which uses Eclipse Gemini JPA, Hibernate or some other JPA Provider?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="text-align: justify;">Thanks,</p><p style="text-align: justify;">Grischan</p></div>
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