EntityManager must be access within a transaction -- Please
I 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
