JPA load-time enhamcement fails for a WAB
-----------------------------------------
Key: ARIES-832
URL: https://issues.apache.org/jira/browse/ARIES-832
Project: Aries
Issue Type: Bug
Components: JPA
Environment: I am using Equinox
org.eclipse.osgi_3.7.2.v20120110-1415.jar with Apache Aries revision 1187719
Reporter: Brian DePradine
I was running a test with a WAB that uses JPA, and I found that the JPA entity
contained in the WAB was not being enhanced. The reason was due to the
following:
187 polo WARN [Blueprint Extender: 1] openjpa.Runtime - An error occurred
while registering a ClassTransformer with
org.apache.aries.jpa.container.unit.impl.PersistenceUnitInfoImpl@69b169b1. The
error is logged along with this warning. Load-time class transformation will
not be available.
java.lang.IllegalStateException: The bundle
com.ibm.osgi.jpa.warfileAdditions/1.0.0 is not started.
at
org.apache.aries.jpa.container.unit.impl.JndiDataSource.getDs(JndiDataSource.java:61)
at
org.apache.aries.jpa.container.unit.impl.DelayedLookupDataSource.getConnection(DelayedLookupDataSource.java:36)
at
org.apache.openjpa.lib.jdbc.DelegatingDataSource.getConnection(DelegatingDataSource.java:108)
at
org.apache.openjpa.lib.jdbc.DecoratingDataSource.getConnection(DecoratingDataSource.java:87)
at
org.apache.openjpa.jdbc.sql.DBDictionaryFactory.newDBDictionary(DBDictionaryFactory.java:91)
at
org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getDBDictionaryInstance(JDBCConfigurationImpl.java:603)
at
org.apache.openjpa.jdbc.meta.MappingRepository.endConfiguration(MappingRepository.java:1510)
at
org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:518)
at
org.apache.openjpa.lib.conf.Configurations.configureInstance(Configurations.java:443)
at
org.apache.openjpa.lib.conf.PluginValue.instantiate(PluginValue.java:104)
at
org.apache.openjpa.conf.MetaDataRepositoryValue.instantiate(MetaDataRepositoryValue.java:68)
at
org.apache.openjpa.lib.conf.ObjectValue.instantiate(ObjectValue.java:83)
at
org.apache.openjpa.conf.OpenJPAConfigurationImpl.newMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:963)
at
org.apache.openjpa.conf.OpenJPAConfigurationImpl.getMetaDataRepositoryInstance(OpenJPAConfigurationImpl.java:954)
at
org.apache.openjpa.persistence.PersistenceProviderImpl$ClassTransformerImpl.<init>(PersistenceProviderImpl.java:281)
at
org.apache.openjpa.persistence.PersistenceProviderImpl$ClassTransformerImpl.<init>(PersistenceProviderImpl.java:265)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createContainerEntityManagerFactory(PersistenceProviderImpl.java:168)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createContainerEntityManagerFactory(PersistenceProviderImpl.java:62)
at
org.apache.aries.jpa.container.impl.EntityManagerFactoryManager.createEntityManagerFactories(EntityManagerFactoryManager.java:329)
at
org.apache.aries.jpa.container.impl.EntityManagerFactoryManager.bundleStateChange(EntityManagerFactoryManager.java:175)
at
org.apache.aries.jpa.container.impl.PersistenceBundleManager.setupManager(PersistenceBundleManager.java:394)
at
org.apache.aries.jpa.container.impl.PersistenceBundleManager.addingBundle(PersistenceBundleManager.java:154)
at
org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:482)
at
org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:1)
at
org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:262)
at
org.osgi.util.tracker.AbstractTracked.trackInitial(AbstractTracked.java:185)
at org.osgi.util.tracker.BundleTracker.open(BundleTracker.java:163)
...............................
It turns out that the IllegalStateException is thrown because the WAB is in the
RESOLVED state when a request for the BundleContext is made against it. The
javadoc says "If this bundle is not in the STARTING, ACTIVE, or STOPPING states
or this bundle is a fragment bundle, then this bundle has no valid
BundleContext. This method will return null if this bundle has no valid
BundleContext."
Looking at the code in EntityManagerFactoryManager.bundleStateChange() I can
see the following:
public synchronized void bundleStateChange() throws
InvalidPersistenceUnitException {
switch(bundle.getState()) {
case Bundle.RESOLVED :
//If we are Resolved as a result of having stopped
//and missed the STOPPING event we need to unregister
unregisterEntityManagerFactories();
//Create the EMF objects if necessary
createEntityManagerFactories();
break;
//Starting and active both require EMFs to be registered
case Bundle.STARTING :
case Bundle.ACTIVE :
if(tracker == null) {
tracker = new ServiceTracker(bundle.getBundleContext(),
"org.osgi.service.jdbc.DataSourceFactory", this);
tracker.open();
}
registerEntityManagerFactories();
break;
//Stopping means the EMFs should
case Bundle.STOPPING :
//If we're stopping we no longer need to be quiescing
quiesce = false;
if(tracker != null) {
tracker.close();
tracker = null;
}
unregisterEntityManagerFactories();
break;
case Bundle.INSTALLED :
//Destroy everything
destroyEntityManagerFactories();
}
}
This clearly shows that createEntityManagerFactories() gets driven when the WAB
is in the RESOLVED state which results in the exception above. It looks like
this should affect more than just WABs, but I have only hit this issue with
WABs so far.
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