You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@tomee.apache.org by Th...@partner.bmw.ch on 2009/02/09 12:50:04 UTC
Extended PersistenceContext and Transactions
Hi @all,
so now I tracked down my problem with the Extended PersistenceContext. The reason for failure was the TransactionManagement.
Anyhow I tried to work with different possibilities of Transactions, but did not find a solution yet. So maybe someone can
point me to the right direction.
My scenario is as follows and pretty easy. I have one EntityManagerProvider using the injected EntityManager as described in http://www.nabble.com/Re%3A-Obtaining-an-EntityManager-instance-outside-an-EJB-p21701466.html.
The I have another SessionBean, which should also be injected with an Extended EntityManager.
The EntityManager is injected perfectly into my EntityManagerProvider, but when trying to use the second sessionBean with the extended EntityManager I run into various problems. As I read from the documentations, the Extended PersistenceContext works as follows: Any changes made to the entities are queued to the EntityManager. As soon as a new Transaction is started, the EntityManager joins this Transaction and commits changed to database.
So therefor my first idea was, not to use a Transaction, because this should be done by the container - in this case openEJB.
When I do so, it results in the following exception, when trying to obtain the delegate of the EntityManager:
java.lang.IllegalStateException: InternalError: an entity manager should already be registered for this entended persistence unit
at org.apache.openejb.persistence.JtaEntityManagerRegistry.getEntityManager(JtaEntityManagerRegistry.java:91)
at org.apache.openejb.persistence.JtaEntityManager.getEntityManager(JtaEntityManager.java:61)
at org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:92)
at org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:41)
at com.sepus.testUtil.commons.service.BaseApplicationServerProvider.getPersistenceProvider(BaseApplicationServerProvider.java:106)
at company.commons.service.impl.PopulatorServiceImpl.<init>(PopulatorServiceImpl.java:47)
at company.commons.environment.TestEnvironment.start(TestEnvironment.java:130)
at company.commons.environment.TestBase.startEnvironment(TestBase.java:29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:580)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:398)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:145)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:82)
at org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:167)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:104)
at org.testng.TestRunner.runWorkers(TestRunner.java:712)
at org.testng.TestRunner.privateRun(TestRunner.java:582)
at org.testng.TestRunner.run(TestRunner.java:477)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
at org.testng.SuiteRunner.run(SuiteRunner.java:198)
at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:821)
at org.testng.TestNG.runSuitesLocally(TestNG.java:788)
at org.testng.TestNG.run(TestNG.java:708)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
(By the way: there is probably a typo in the Exception-message)
Second try was to use the javax.persistence.EntityTransaction of the EntityManager. But as soon as I try to obtain the EntityTransaction I get the following Exception:
java.lang.IllegalStateException: A JTA Entity Manager can not use an entity transaction
at org.apache.openejb.persistence.JtaEntityManager.getTransaction(JtaEntityManager.java:220)
at com.sepus.testUtil.commons.environment.TestEnvironment.start(TestEnvironment.java:127)
at com.sepus.testUtil.commons.environment.TestBase.startEnvironment(TestBase.java:29)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
Third solution was to use the javax.Transaction.TransactionManager. Not even better:
DEBUG - finished invoking method create with exception:javax.ejb.EJBException: nested exception is: org.apache.openejb.persistence.EntityManagerAlread
yRegisteredException: Another entity manager is already registered for this persistence unit
javax.ejb.EJBException: nested exception is: org.apache.openejb.persistence.EntityManagerAlreadyRegisteredException: Another entity manager is already
registered for this persistence unit
org.apache.openejb.persistence.EntityManagerAlreadyRegisteredException: Another entity manager is already registered for this persistence unit
at org.apache.openejb.persistence.JtaEntityManagerRegistry$ExtendedRegistry.addEntityManagers(JtaEntityManagerRegistry.java:191)
at org.apache.openejb.persistence.JtaEntityManagerRegistry$ExtendedRegistry.access$100(JtaEntityManagerRegistry.java:169)
at org.apache.openejb.persistence.JtaEntityManagerRegistry.addEntityManagers(JtaEntityManagerRegistry.java:129)
at org.apache.openejb.core.stateful.StatefulContainer.createEJBObject(StatefulContainer.java:288)
at org.apache.openejb.core.stateful.StatefulContainer.invoke(StatefulContainer.java:263)
at org.apache.openejb.core.ivm.EjbHomeProxyHandler.create(EjbHomeProxyHandler.java:270)
at org.apache.openejb.core.ivm.EjbHomeProxyHandler._invoke(EjbHomeProxyHandler.java:161)
at org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:286)
at $Proxy77.create(Unknown Source)
at org.apache.openejb.core.ivm.naming.BusinessLocalReference.getObject(BusinessLocalReference.java:33)
at org.apache.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:150)
at org.apache.openejb.core.ivm.naming.ContextWrapper.lookup(ContextWrapper.java:115)
at javax.naming.InitialContext.lookup(InitialContext.java:351)
at company.testUtil.commons.service.BaseApplicationServerProvider.lookup(BaseApplicationServerProvider.java:162)
at company.testUtil.commons.service.BaseApplicationServerProvider.getService(BaseApplicationServerProvider.java:145)
at company.testUtil.commons.service.BaseApplicationServerProvider.getService(BaseApplicationServerProvider.java:136)
at company.testUtil.commons.environment.TestEnvironment.getService(TestEnvironment.java:332)
at company..iis.test.core.populator.IISPopulator.getSvc(IISPopulator.java:39)
at company..iis.test.core.populator.RegionPopulator.populate(RegionPopulator.java:27)
at company.testUtil.commons.service.impl.PopulatorServiceImpl.doPopulate(PopulatorServiceImpl.java:176)
at company.testUtil.commons.service.impl.PopulatorServiceImpl.recursivePopulation(PopulatorServiceImpl.java:121)
at company.testUtil.commons.service.impl.PopulatorServiceImpl.populate(PopulatorServiceImpl.java:91)
at company.testUtil.commons.environment.TestEnvironment.start(TestEnvironment.java:133)
at company.testUtil.commons.environment.TestBase.startEnvironment(TestBase.java:29)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:580)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:398)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:145)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:82)
at org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:167)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:104)
at org.testng.TestRunner.runWorkers(TestRunner.java:712)
at org.testng.TestRunner.privateRun(TestRunner.java:582)
at org.testng.TestRunner.run(TestRunner.java:477)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
at org.testng.SuiteRunner.run(SuiteRunner.java:198)
at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:821)
at org.testng.TestNG.runSuitesLocally(TestNG.java:788)
at org.testng.TestNG.run(TestNG.java:708)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
at org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
And lastly, using the UserTransaction did not succeed, as no UserTransaction has been injected and therefor has a null-value.
So now I am a bit confused, how to work with the Extended PersistenceContext using openEJB and Hibernate as EntityManager.
Can anybody maybe tell me, what I am missing or what I have to do to make it work?
Thanks
Thomas
Re: Extended PersistenceContext and Transactions
Posted by Karan Malhi <ka...@gmail.com>.
Hi Thomas,
The issue was related to how to run test within a transaction. You were
trying to obtain a TransactionManager from OpenEJB and then beginning a
transaction from there. I have modified your test to show how you can call
your test within container managed transactions. The code which I added to
your test case was taken from the example at
http://openejb.apache.org/3.0/testing-transactions-example.html . This
example shows details on how to run a test within transaction.
Here is your modified code (MY COMMENTS ARE IN UPPERCASE), I also created a
src/test/resources/META-INF directory (inside the testCase module)and added
the ejb-jar.xml inside it. This allows EJB's to be discovered when OpenEJB
boots. Notice that the directory is src/test/resources and NOT
src/main/resources
package test;
import java.util.List;
import java.util.Properties;
import java.util.concurrent.Callable; // ADDED THIS
import javax.ejb.Stateless;
import javax.ejb.TransactionAttribute;// ADDED THIS
import javax.ejb.TransactionAttributeType; // ADDED THIS
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.transaction.TransactionManager;
import org.apache.openejb.OpenEJB;
import org.testng.annotations.Test;
import test1.entity.AnEntity;
import test1.service.AService;
import testService.service.PersistenceSvc;
@Test(enabled = true)
public class ATest {
private Context context; // ADDED THIS
public void aSimpleTest() throws Exception {
System.setProperty("log4j.category.OpenEJB", "debug");
System.setProperty("log4j.category.openjpa", "debug");
Properties p = new Properties();
p.put(Context.INITIAL_CONTEXT_FACTORY,
"org.apache.openejb.client.LocalInitialContextFactory");
p.put("openejb.deployments.classpath.ear", "true");
p.put("testDatabase", "new://Resource?type=DataSource");
p.put("testDatabase.JdbcDriver", "org.hsqldb.jdbcDriver");
p.put("testDatabase.JdbcUrl", "jdbc:hsqldb:mem:testdb"); // CHANGED
TO IN MEMORY JDBC URL -- NOT REQUIRED -- I DID NOT WANT TO START A
//SEPARATE INSTANCE OF HSQLDB
p.put("testDatabaseUnmanaged", "new://Resource?type=DataSource");
p.put("testDatabaseUnmanaged.JdbcDriver", "org.hsqldb.jdbcDriver");
p.put("testDatabaseUnmanaged.JdbcUrl", "jdbc:hsqldb:mem:testdb");
p.put("testDatabaseUnmanaged.JtaManaged", "false");
context = new InitialContext(p);
// IF YOU UNCOMMENT THE BELOW COMMENT, IT SHOULD WORK FINE. NO ISSUES HERE
/*
* AStatefulService service = (AStatefulService)
* context.lookup("AStatefulServiceImplLocal");
service.addEntity(new
* AnEntity());
*/
// THIS IS WHERE THE ISSUE WAS -- I HAVE PULLED OUT THE CODE AND PUT IT
INSIDE doWork() TO SHOW HOW TO RUN WITHIN TRANSACTION
/*
TransactionManager tx = OpenEJB.getTransactionManager();
tx.begin();
PersistenceSvc ps = (PersistenceSvc) context
.lookup("PersistenceSvcImplLocal");
tx.commit();
*/
}
// ADDED THIS METHOD
private void doWork() throws Exception {
AService service2 = (AService) context.lookup("AServiceImplLocal");
service2.addEntity(new AnEntity());
}
// TransactionBean IS DEFINED BELOW AS AN INNER CLASS. THE doWork() METHOD
WILL RUN IN A TX
public void testWithTransaction() throws Exception {
Caller transactionBean = (Caller) context
.lookup("TransactionBeanLocal");
transactionBean.call(new Callable() {
public Object call() throws Exception {
doWork();
return null;
}
});
}
// IF YOU WANTED TO CALL doWork() OUTSIDE A TRANSACTION, THEN UNCOMMENT THE
BELOW METHOD
/* public void testWithoutTransaction() throws Exception {
try {
doWork();
} catch (javax.ejb.EJBTransactionRequiredException e) {
}
}
*/
// THE @Local INTERFACE
public static interface Caller {
public <V> V call(Callable<V> callable) throws Exception;
}
// THE BEAN CLASS. NOTICE THE REQUIRES_NEW ATTRIBUTE
/**
* This little bit of magic allows our test code to execute in the scope
of
* a container controlled transaction.
*
* The src/test/resource/META-INF/ejb-jar.xml will cause this EJB to be
* automatically discovered and deployed when OpenEJB boots up.
*/
@Stateless
@TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
public static class TransactionBean implements Caller {
public <V> V call(Callable<V> callable) throws Exception {
return callable.call();
}
}
}
On Thu, Feb 12, 2009 at 5:01 AM, <Th...@partner.bmw.ch> wrote:
> Karan,
>
> Sure I do! I am glad, when I can help you!
> I´m not sure where exactly the error appears, so I simply quickly assembled
> the classes I used without tracking down the exact cause.
> So there might be some overhead which has nothing to do with the error.
>
> Just a short explanation:
> TestCase-service and TestCase-entity are just libraries, holding some
> persistence-info or additional services.
> So just build them and that´s it.
> TestCase holds a simple TestNG-TestCase. When I run that one, the error
> appears.
>
> If you need any further help, please let me know.
> If I have a misconcept violating the EJB3-specifications, please let me
> know as well.
>
> Thomas
>
>
> -----Ursprüngliche Nachricht-----
> Von: Karan Malhi [mailto:karan.malhi@gmail.com]
> Gesendet: Donnerstag, 12. Februar 2009 00:58
> An: users@openejb.apache.org
> Betreff: Re: Extended PersistenceContext and Transactions
>
> Hi Thomas,
> I could not reproduce the error. Could you share the code?
>
> On Mon, Feb 9, 2009 at 6:50 AM, <Th...@partner.bmw.ch> wrote:
>
> > Hi @all,
> >
> > so now I tracked down my problem with the Extended PersistenceContext.
> > The reason for failure was the TransactionManagement.
> > Anyhow I tried to work with different possibilities of Transactions,
> > but did not find a solution yet. So maybe someone can point me to the
> > right direction.
> >
> > My scenario is as follows and pretty easy. I have one
> > EntityManagerProvider using the injected EntityManager as described in
> > http://www.nabble.com/Re%3A-Obtaining-an-EntityManager-instance-outsid
> > e-an-EJB-p21701466.html
> > .
> > The I have another SessionBean, which should also be injected with an
> > Extended EntityManager.
> >
> > The EntityManager is injected perfectly into my EntityManagerProvider,
> > but when trying to use the second sessionBean with the extended
> > EntityManager I run into various problems. As I read from the
> > documentations, the Extended PersistenceContext works as follows: Any
> > changes made to the entities are queued to the EntityManager. As soon
> > as a new Transaction is started, the EntityManager joins this Transaction
> and commits changed to database.
> >
> > So therefor my first idea was, not to use a Transaction, because this
> > should be done by the container - in this case openEJB.
> > When I do so, it results in the following exception, when trying to
> > obtain the delegate of the EntityManager:
> >
> > java.lang.IllegalStateException: InternalError: an entity manager
> > should already be registered for this entended persistence unit
> > at
> >
> org.apache.openejb.persistence.JtaEntityManagerRegistry.getEntityManager(JtaEntityManagerRegistry.java:91)
> > at
> >
> org.apache.openejb.persistence.JtaEntityManager.getEntityManager(JtaEntityManager.java:61)
> > at
> >
> org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:92)
> > at
> >
> org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:41)
> > at
> >
> com.sepus.testUtil.commons.service.BaseApplicationServerProvider.getPersistenceProvider(BaseApplicationServerProvider.java:106)
> > at
> >
> company.commons.service.impl.PopulatorServiceImpl.<init>(PopulatorServiceImpl.java:47)
> > at
> >
> company.commons.environment.TestEnvironment.start(TestEnvironment.java:130)
> > at
> > company.commons.environment.TestBase.startEnvironment(TestBase.java:29)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:585)
> > at
> > org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:580)
> > at
> > org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:398)
> > at
> > org.testng.internal.Invoker.invokeConfigurations(Invoker.java:145)
> > at
> org.testng.internal.Invoker.invokeConfigurations(Invoker.java:82)
> > at
> >
> org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:167)
> > at
> > org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:104)
> > at org.testng.TestRunner.runWorkers(TestRunner.java:712)
> > at org.testng.TestRunner.privateRun(TestRunner.java:582)
> > at org.testng.TestRunner.run(TestRunner.java:477)
> > at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
> > at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
> > at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
> > at org.testng.SuiteRunner.run(SuiteRunner.java:198)
> > at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:821)
> > at org.testng.TestNG.runSuitesLocally(TestNG.java:788)
> > at org.testng.TestNG.run(TestNG.java:708)
> > at
> >
> org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
> > at
> >
> org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
> > at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:585)
> > at
> >
> org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
> > at
> > org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.ja
> > va:1009)
> >
> >
> > (By the way: there is probably a typo in the Exception-message)
> >
> >
> > Second try was to use the javax.persistence.EntityTransaction of the
> > EntityManager. But as soon as I try to obtain the EntityTransaction I
> > get the following Exception:
> >
> > java.lang.IllegalStateException: A JTA Entity Manager can not use an
> > entity transaction
> > at
> >
> org.apache.openejb.persistence.JtaEntityManager.getTransaction(JtaEntityManager.java:220)
> > at
> >
> com.sepus.testUtil.commons.environment.TestEnvironment.start(TestEnvironment.java:127)
> > at
> >
> com.sepus.testUtil.commons.environment.TestBase.startEnvironment(TestBase.java:29)
> > at
> >
> org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
> > at
> >
> org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
> > at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
> > at
> >
> org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
> > at
> > org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.ja
> > va:1009)
> >
> >
> > Third solution was to use the javax.Transaction.TransactionManager.
> > Not even better:
> >
> > DEBUG - finished invoking method create with
> > exception:javax.ejb.EJBException: nested exception is:
> > org.apache.openejb.persistence.EntityManagerAlread
> > yRegisteredException: Another entity manager is already registered for
> > this persistence unit
> > javax.ejb.EJBException: nested exception is:
> > org.apache.openejb.persistence.EntityManagerAlreadyRegisteredException:
> > Another entity manager is already
> > registered for this persistence unit
> > org.apache.openejb.persistence.EntityManagerAlreadyRegisteredException:
> > Another entity manager is already registered for this persistence unit
> > at
> >
> org.apache.openejb.persistence.JtaEntityManagerRegistry$ExtendedRegistry.addEntityManagers(JtaEntityManagerRegistry.java:191)
> > at
> >
> org.apache.openejb.persistence.JtaEntityManagerRegistry$ExtendedRegistry.access$100(JtaEntityManagerRegistry.java:169)
> > at
> >
> org.apache.openejb.persistence.JtaEntityManagerRegistry.addEntityManagers(JtaEntityManagerRegistry.java:129)
> > at
> >
> org.apache.openejb.core.stateful.StatefulContainer.createEJBObject(StatefulContainer.java:288)
> > at
> >
> org.apache.openejb.core.stateful.StatefulContainer.invoke(StatefulContainer.java:263)
> > at
> >
> org.apache.openejb.core.ivm.EjbHomeProxyHandler.create(EjbHomeProxyHandler.java:270)
> > at
> >
> org.apache.openejb.core.ivm.EjbHomeProxyHandler._invoke(EjbHomeProxyHandler.java:161)
> > at
> >
> org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:286)
> > at $Proxy77.create(Unknown Source)
> > at
> >
> org.apache.openejb.core.ivm.naming.BusinessLocalReference.getObject(BusinessLocalReference.java:33)
> > at
> > org.apache.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:150)
> > at
> >
> org.apache.openejb.core.ivm.naming.ContextWrapper.lookup(ContextWrapper.java:115)
> > at javax.naming.InitialContext.lookup(InitialContext.java:351)
> > at
> >
> company.testUtil.commons.service.BaseApplicationServerProvider.lookup(BaseApplicationServerProvider.java:162)
> > at
> >
> company.testUtil.commons.service.BaseApplicationServerProvider.getService(BaseApplicationServerProvider.java:145)
> > at
> >
> company.testUtil.commons.service.BaseApplicationServerProvider.getService(BaseApplicationServerProvider.java:136)
> > at
> >
> company.testUtil.commons.environment.TestEnvironment.getService(TestEnvironment.java:332)
> > at
> >
> company..iis.test.core.populator.IISPopulator.getSvc(IISPopulator.java:39)
> > at
> >
> company..iis.test.core.populator.RegionPopulator.populate(RegionPopulator.java:27)
> > at
> >
> company.testUtil.commons.service.impl.PopulatorServiceImpl.doPopulate(PopulatorServiceImpl.java:176)
> > at
> >
> company.testUtil.commons.service.impl.PopulatorServiceImpl.recursivePopulation(PopulatorServiceImpl.java:121)
> > at
> >
> company.testUtil.commons.service.impl.PopulatorServiceImpl.populate(PopulatorServiceImpl.java:91)
> > at
> >
> company.testUtil.commons.environment.TestEnvironment.start(TestEnvironment.java:133)
> > at
> >
> company.testUtil.commons.environment.TestBase.startEnvironment(TestBase.java:29)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:585)
> > at
> > org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:580)
> > at
> > org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:398)
> > at
> > org.testng.internal.Invoker.invokeConfigurations(Invoker.java:145)
> > at
> org.testng.internal.Invoker.invokeConfigurations(Invoker.java:82)
> > at
> >
> org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:167)
> > at
> > org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:104)
> > at org.testng.TestRunner.runWorkers(TestRunner.java:712)
> > at org.testng.TestRunner.privateRun(TestRunner.java:582)
> > at org.testng.TestRunner.run(TestRunner.java:477)
> > at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
> > at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
> > at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
> > at org.testng.SuiteRunner.run(SuiteRunner.java:198)
> > at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:821)
> > at org.testng.TestNG.runSuitesLocally(TestNG.java:788)
> > at org.testng.TestNG.run(TestNG.java:708)
> > at
> >
> org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
> > at
> >
> org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
> > at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:585)
> > at
> >
> org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
> > at
> > org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.ja
> > va:1009)
> >
> >
> > And lastly, using the UserTransaction did not succeed, as no
> > UserTransaction has been injected and therefor has a null-value.
> >
> > So now I am a bit confused, how to work with the Extended
> > PersistenceContext using openEJB and Hibernate as EntityManager.
> >
> > Can anybody maybe tell me, what I am missing or what I have to do to
> > make it work?
> >
> > Thanks
> > Thomas
> >
>
>
>
> --
> Karan Singh Malhi
>
--
Karan Singh Malhi
Re: Extended PersistenceContext and Transactions
Posted by Karan Malhi <ka...@gmail.com>.
Hi Thomas,
I could not reproduce the error. Could you share the code?
On Mon, Feb 9, 2009 at 6:50 AM, <Th...@partner.bmw.ch> wrote:
> Hi @all,
>
> so now I tracked down my problem with the Extended PersistenceContext. The
> reason for failure was the TransactionManagement.
> Anyhow I tried to work with different possibilities of Transactions, but
> did not find a solution yet. So maybe someone can
> point me to the right direction.
>
> My scenario is as follows and pretty easy. I have one EntityManagerProvider
> using the injected EntityManager as described in
> http://www.nabble.com/Re%3A-Obtaining-an-EntityManager-instance-outside-an-EJB-p21701466.html
> .
> The I have another SessionBean, which should also be injected with an
> Extended EntityManager.
>
> The EntityManager is injected perfectly into my EntityManagerProvider, but
> when trying to use the second sessionBean with the extended EntityManager I
> run into various problems. As I read from the documentations, the Extended
> PersistenceContext works as follows: Any changes made to the entities are
> queued to the EntityManager. As soon as a new Transaction is started, the
> EntityManager joins this Transaction and commits changed to database.
>
> So therefor my first idea was, not to use a Transaction, because this
> should be done by the container - in this case openEJB.
> When I do so, it results in the following exception, when trying to obtain
> the delegate of the EntityManager:
>
> java.lang.IllegalStateException: InternalError: an entity manager should
> already be registered for this entended persistence unit
> at
> org.apache.openejb.persistence.JtaEntityManagerRegistry.getEntityManager(JtaEntityManagerRegistry.java:91)
> at
> org.apache.openejb.persistence.JtaEntityManager.getEntityManager(JtaEntityManager.java:61)
> at
> org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:92)
> at
> org.apache.openejb.persistence.JtaEntityManager.getDelegate(JtaEntityManager.java:41)
> at
> com.sepus.testUtil.commons.service.BaseApplicationServerProvider.getPersistenceProvider(BaseApplicationServerProvider.java:106)
> at
> company.commons.service.impl.PopulatorServiceImpl.<init>(PopulatorServiceImpl.java:47)
> at
> company.commons.environment.TestEnvironment.start(TestEnvironment.java:130)
> at
> company.commons.environment.TestBase.startEnvironment(TestBase.java:29)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:580)
> at
> org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:398)
> at
> org.testng.internal.Invoker.invokeConfigurations(Invoker.java:145)
> at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:82)
> at
> org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:167)
> at
> org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:104)
> at org.testng.TestRunner.runWorkers(TestRunner.java:712)
> at org.testng.TestRunner.privateRun(TestRunner.java:582)
> at org.testng.TestRunner.run(TestRunner.java:477)
> at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
> at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
> at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
> at org.testng.SuiteRunner.run(SuiteRunner.java:198)
> at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:821)
> at org.testng.TestNG.runSuitesLocally(TestNG.java:788)
> at org.testng.TestNG.run(TestNG.java:708)
> at
> org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
> at
> org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
> at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
> at
> org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
>
>
> (By the way: there is probably a typo in the Exception-message)
>
>
> Second try was to use the javax.persistence.EntityTransaction of the
> EntityManager. But as soon as I try to obtain the EntityTransaction I get
> the following Exception:
>
> java.lang.IllegalStateException: A JTA Entity Manager can not use an entity
> transaction
> at
> org.apache.openejb.persistence.JtaEntityManager.getTransaction(JtaEntityManager.java:220)
> at
> com.sepus.testUtil.commons.environment.TestEnvironment.start(TestEnvironment.java:127)
> at
> com.sepus.testUtil.commons.environment.TestBase.startEnvironment(TestBase.java:29)
> at
> org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
> at
> org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
> at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
> at
> org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
> at
> org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
>
>
> Third solution was to use the javax.Transaction.TransactionManager. Not
> even better:
>
> DEBUG - finished invoking method create with
> exception:javax.ejb.EJBException: nested exception is:
> org.apache.openejb.persistence.EntityManagerAlread
> yRegisteredException: Another entity manager is already registered for this
> persistence unit
> javax.ejb.EJBException: nested exception is:
> org.apache.openejb.persistence.EntityManagerAlreadyRegisteredException:
> Another entity manager is already
> registered for this persistence unit
> org.apache.openejb.persistence.EntityManagerAlreadyRegisteredException:
> Another entity manager is already registered for this persistence unit
> at
> org.apache.openejb.persistence.JtaEntityManagerRegistry$ExtendedRegistry.addEntityManagers(JtaEntityManagerRegistry.java:191)
> at
> org.apache.openejb.persistence.JtaEntityManagerRegistry$ExtendedRegistry.access$100(JtaEntityManagerRegistry.java:169)
> at
> org.apache.openejb.persistence.JtaEntityManagerRegistry.addEntityManagers(JtaEntityManagerRegistry.java:129)
> at
> org.apache.openejb.core.stateful.StatefulContainer.createEJBObject(StatefulContainer.java:288)
> at
> org.apache.openejb.core.stateful.StatefulContainer.invoke(StatefulContainer.java:263)
> at
> org.apache.openejb.core.ivm.EjbHomeProxyHandler.create(EjbHomeProxyHandler.java:270)
> at
> org.apache.openejb.core.ivm.EjbHomeProxyHandler._invoke(EjbHomeProxyHandler.java:161)
> at
> org.apache.openejb.core.ivm.BaseEjbProxyHandler.invoke(BaseEjbProxyHandler.java:286)
> at $Proxy77.create(Unknown Source)
> at
> org.apache.openejb.core.ivm.naming.BusinessLocalReference.getObject(BusinessLocalReference.java:33)
> at
> org.apache.openejb.core.ivm.naming.IvmContext.lookup(IvmContext.java:150)
> at
> org.apache.openejb.core.ivm.naming.ContextWrapper.lookup(ContextWrapper.java:115)
> at javax.naming.InitialContext.lookup(InitialContext.java:351)
> at
> company.testUtil.commons.service.BaseApplicationServerProvider.lookup(BaseApplicationServerProvider.java:162)
> at
> company.testUtil.commons.service.BaseApplicationServerProvider.getService(BaseApplicationServerProvider.java:145)
> at
> company.testUtil.commons.service.BaseApplicationServerProvider.getService(BaseApplicationServerProvider.java:136)
> at
> company.testUtil.commons.environment.TestEnvironment.getService(TestEnvironment.java:332)
> at
> company..iis.test.core.populator.IISPopulator.getSvc(IISPopulator.java:39)
> at
> company..iis.test.core.populator.RegionPopulator.populate(RegionPopulator.java:27)
> at
> company.testUtil.commons.service.impl.PopulatorServiceImpl.doPopulate(PopulatorServiceImpl.java:176)
> at
> company.testUtil.commons.service.impl.PopulatorServiceImpl.recursivePopulation(PopulatorServiceImpl.java:121)
> at
> company.testUtil.commons.service.impl.PopulatorServiceImpl.populate(PopulatorServiceImpl.java:91)
> at
> company.testUtil.commons.environment.TestEnvironment.start(TestEnvironment.java:133)
> at
> company.testUtil.commons.environment.TestBase.startEnvironment(TestBase.java:29)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:580)
> at
> org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:398)
> at
> org.testng.internal.Invoker.invokeConfigurations(Invoker.java:145)
> at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:82)
> at
> org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:167)
> at
> org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:104)
> at org.testng.TestRunner.runWorkers(TestRunner.java:712)
> at org.testng.TestRunner.privateRun(TestRunner.java:582)
> at org.testng.TestRunner.run(TestRunner.java:477)
> at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
> at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
> at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
> at org.testng.SuiteRunner.run(SuiteRunner.java:198)
> at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:821)
> at org.testng.TestNG.runSuitesLocally(TestNG.java:788)
> at org.testng.TestNG.run(TestNG.java:708)
> at
> org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:74)
> at
> org.apache.maven.surefire.testng.TestNGXmlTestSuite.execute(TestNGXmlTestSuite.java:92)
> at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:585)
> at
> org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
> at
> org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
>
>
> And lastly, using the UserTransaction did not succeed, as no
> UserTransaction has been injected and therefor has a null-value.
>
> So now I am a bit confused, how to work with the Extended
> PersistenceContext using openEJB and Hibernate as EntityManager.
>
> Can anybody maybe tell me, what I am missing or what I have to do to make
> it work?
>
> Thanks
> Thomas
>
--
Karan Singh Malhi