EntityManager must be access within a transaction -- Please
sukar1205 Sep 25, 2007 3:52 PMI am testing a session bean by a client.
and I keep getting this error, I know my code should work because
I wrote the same code last week.
this is the error
xception in thread "main" javax.ejb.EJBTransactionRolledbackException: EntityManager must be access within a transaction at org.jboss.ejb3.tx.Ejb3TxPolicy.handleInCallerTx(Ejb3TxPolicy.java:87) at org.jboss.aspects.tx.TxPolicy.invokeInCallerTx(TxPolicy.java:130) at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:195) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77) at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:106) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke(StatelessContainer.java:278) at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106) at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82) at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:734) at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:560) at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:369) at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:165) Caused by: javax.persistence.TransactionRequiredException: EntityManager must be access within a transaction at org.jboss.ejb3.entity.ManagedEntityManagerFactory.verifyInTx(ManagedEntityManagerFactory.java:150)
This is my main ... all i want to do is add an object in an table
public class KBClient { public static void main(String[] args) { KBClient c = new KBClient(); ClassificationRemote r = c.lookupNewClassificationBean(); KnowledgeBase first = new KnowledgeBase(); first.setKnowledgeID(200); first.setKnowledgeName("AmerDemo"); first.setKnowledgeCategory("Classification"); first.setProjectID(new Project(88)); first.setDeleted(0); r.addKnowledgeBase(first); //Exception occurs } private ClassificationRemote lookupNewClassificationBean() { try { Hashtable props = new Hashtable(); props.put("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory"); props.put("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces"); props.put("java.naming.provider.url", "localhost"); Context c = new InitialContext(props); return (ClassificationRemote) c.lookup("ClassificationBeanFinal/remote"); } catch(NamingException ne) { Logger.getLogger(getClass().getName()).log(Level.SEVERE,"exception caught" ,ne); throw new RuntimeException(ne); } } }
and This is the function in the session bean
@PersistenceContext private EntityManager em; public void addKnowledgeBase(KnowledgeBase kb){ System.out.println("YAAAHOOOOOOO"); em.persist(kb); }
I checked the JNDI tree as well ... everything is fine
the exception occurs when adding to the table in main.
Please help me !!!
Thanks