8 Replies Latest reply on Mar 19, 2012 9:13 AM by sfcoy

Using plain JPA/Hibernate4 in AS 7 cannot find entities

lostiniceland Mar 19, 2012 6:02 AM

Hello

I have a little demo-project and I am trying to use JPA withing AS7. I am not trying to use Hibernate 3 or any special dependecies, just the modules that the server uses by default.

When I try to deploy my WAR then I am getting a ClassNotFoundException telling me that my domain-classes cannot be found. I read the article about ClassLoading and for a war-deployment every jar within the lib-folder is added to the classpath. I checked my war-file (produced by maven) and all dependencies are available.

10:45:00,079 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-8) MSC00001: Failed to start service jboss.persistenceunit."bikeviewer-backend-1

.0-SNAPSHOT.jar#bikeviewer": org.jboss.msc.service.StartException in service jboss.persistenceunit."bikeviewer-backend-1.0-SNAPSHOT.jar#bikeviewer": F

ailed to start service

at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_03]

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_03]

at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_03]

Caused by: javax.persistence.PersistenceException: [PersistenceUnit: bikeviewer] class or package not found

at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1400)

at org.hibernate.ejb.Ejb3Configuration.addClassesToSessionFactory(Ejb3Configuration.java:1183)

at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:1047)

at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:692)

at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:72)

at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:162)

at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start(PersistenceUnitServiceImpl.java:85)

at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]

... 3 more

Caused by: java.lang.ClassNotFoundException: bikeviewer.domainmodel.impl.Bike from [Module "org.hibernate:main" from local module loader @68f1e723 (ro

ots: C:\Server\jboss-as\modules)]

at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190) [jboss-modules.jar:1.1.1.GA]

at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468) [jboss-modules.jar:1.1.1.GA]

at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456) [jboss-modules.jar:1.1.1.GA]

at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.1.1.GA]

at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120) [jboss-modules.jar:1.1.1.GA]

at java.lang.Class.forName0(Native Method) [rt.jar:1.7.0_03]

at java.lang.Class.forName(Class.java:264) [rt.jar:1.7.0_03]

at org.hibernate.internal.util.ReflectHelper.classForName(ReflectHelper.java:170)

at org.hibernate.ejb.Ejb3Configuration.classForName(Ejb3Configuration.java:1317)

at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1389)

... 11 more

What I found strange is the fact that when I remove the @PersistenceContext(name="bikeviewer) annotation I dont get this error (but my application doesnt work) even though I provide a persistence.xml which also maps this particular class.

It shouldnt be necessary to provide the proprietary depencies-section in the manifest since I want to use the default hibernate-module...or am I wrong here?

1. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

sfcoy Mar 19, 2012 6:34 AM (in response to lostiniceland)

What does your persistence.xml file look like?
Actions

2. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

lostiniceland Mar 19, 2012 7:19 AM (in response to sfcoy)

Thanks for the quick reply. The persistence.xml is pretty minimal...I looked it up from the JBoss Documentation to use an embedded database for testing

{code:xml}<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0"
 xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
 
 <persistence-unit name="bikeviewer" transaction-type="JTA">
     <jta-data-source>java:jboss/datasources/ExampleDS</jta-data-source>
     <class>bikeviewer.domainmodel.impl.Bike</class>
     <properties>
     <!-- Properties for Hibernate -->
          <property name="hibernate.hbm2ddl.auto" value="create-drop" />
          <property name="hibernate.show_sql" value="false" />
     </properties>
     </persistence-unit>
</persistence>{code}

My project-layout look like this

frontend

backend (EntityManager gets injected...also persistence.xml is here)

domain (class Bike is located here)

Btw: I tried moving the resources around but that didnt help either :-(

And before anyone asks: I am running on 7.1.1.Final ;-)

3. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

sfcoy Mar 19, 2012 7:56 AM (in response to lostiniceland)

As it's a demo project, the fastest way to get to the bottom of the problem is to zip it up and add it as an attachment.
Actions
4. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

david.salter Mar 19, 2012 8:03 AM (in response to sfcoy)

The only thing I can see without seeing the project is that you don't need to add the <class> entry to your persistence.xml
Actions
5. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

sfcoy Mar 19, 2012 8:33 AM (in response to david.salter)

My interpretation of §8.2.1.6 of the persistence spec is that he must specify either <class>...</class> or <jar-file>...</jar-file> because his persistence classes are in a separate jar.
Actions
6. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

david.salter Mar 19, 2012 8:47 AM (in response to sfcoy)

Sorry, didn't realize the persistence classes were in a different Jar.
Actions
7. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

lostiniceland Mar 19, 2012 9:08 AM (in response to sfcoy)

Stephen Coy schrieb:

My interpretation of §8.2.1.6 of the persistence spec is that he must specify either <class>...</class> or <jar-file>...</jar-file> because his persistence classes are in a separate jar.
That's it! Thank you very much. Until now I only used JPA in an OSGi environment with EclipseLink and there I never had to use the jar-file element.

Thank you very much.
Actions
8. Re: Using plain JPA/Hibernate4 in AS 7 cannot find entities

sfcoy Mar 19, 2012 9:13 AM (in response to lostiniceland)

Actually, this is maven operator error.

mvn clean install
mvn -pl bikeviewer-frontend-jsf jboss-as:deploy

Works just fine for me...

The error you're getting is from an attempt to deploy bikeviewer-backend-1.0-SNAPSHOT.jar on it's own.
1 of 1 people found this helpful
Actions

Go to original post