How is your project setup?
Are you using Dali and configured EA2 as a runtime or are you using Ant,
Maven plugin or Eclipse Plugin for OpenJPA pre-enhancement?
http://openjpa.apache.org/enhancement-with-eclipse.html
BTW - build time enhancement is the preferred method to use and the
runtime enhancement will be turned off by default in future builds.
-Donald
cverdes wrote:
Hi, Im running a DAO Test (with openjpa-kernel-2.0.0-EA2-SNAPSHOT) in eclipse
and with Maven, getting the next exception:
...
Caused by: java.lang.NullPointerException
at
org.apache.openjpa.enhance.InstrumentationFactory.getAgentJar(InstrumentationFactory.java:204)
at
org.apache.openjpa.enhance.InstrumentationFactory.access$200(InstrumentationFactory.java:47)
at
org.apache.openjpa.enhance.InstrumentationFactory$1.run(InstrumentationFactory.java:99)
at java.security.AccessController.doPrivileged(Native Method)
at
org.apache.openjpa.enhance.InstrumentationFactory.getInstrumentation(InstrumentationFactory.java:87)
at
org.apache.openjpa.enhance.PCEnhancerAgent.loadDynamicAgent(PCEnhancerAgent.java:95)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.loadAgent(PersistenceProviderImpl.java:243)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:91)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:119)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:55)
at javax.persistence.Persistence.createFactory(Persistence.java:172)
... 51 more
1) I've downloaded the sources and fixed the problem not using the dynamic
enhance agent (openjpa.DynamicEnhancementAgent=false), but I couldn't be
able to find this parameter in the web, so my first question is: Where can I
find updated reference manual or similar documentation?.
2) I've seen that this error is because
InstrumentationFactory.class.getProtectionDomain()== null
.getCodeSource().getLocation().
So, when it does getLocation().getFile() the NullPointerException is
throwed. I think this is a bug, and something like (if location!=null)
should be in the code.
Anyway, Do you know why could be the code source location null? I would
like to test with dynamic enhance as well :p
Thanx a lot and I hope this thread will help in your work.
