[jboss-user] [EJB 3.0] - ejb 3.0 optimistic locking problem

i tryed to use locking into ejb 3.0 here is my program fragment | @Stateful | @Remote(CountFasade.class) | public class CountFasadeBean implements CountFasade { | | @PersistenceContext(unitName = "Test", type = PersistenceContextType.EXTENDED) | private EntityManager oracleManager; | | @TransactionAttribute(TransactionAttributeType.REQUIRED) | public void update(long start, long end) throws Exception { | try { | System.out.println("================ Start ================"); | Test test = oracleManager.find(Test.class, 1100011L); | System.out.println("test id = " + test.getId()); | System.out.println("test name = " + test.getName()); | System.out.println("test surname = " + test.getSurname()); | System.out.println("test age = " + test.getAge()); | | oracleManager.lock(test, LockModeType.WRITE); | | test.setSurname("From Javaaaa"); | | oracleManager.merge(test); | | Thread.sleep((1000 * 20)); | | oracleManager.flush(); | System.out.println("================ End ================"); | } catch (Exception e) { | e.printStackTrace(); | System.out | .println("================ Exception Own ================"); | } | } | } | | but when i tryed to use this method from client i got an error like this : | 18:04:48,423 ERROR [STDERR] java.lang.NullPointerException | 18:04:48,424 ERROR [STDERR] at org.hibernate.persister.entity.AbstractEntityPersister.lock(AbstractEntityPersister.java:1282) | 18:04:48,424 ERROR [STDERR] at org.hibernate.event.def.AbstractLockUpgradeEventListener.upgradeLock(AbstractLockUpgradeEventListener.java:88) | 18:04:48,424 ERROR [STDERR] at org.hibernate.event.def.DefaultLockEventListener.onLock(DefaultLockEventListener.java:64) | 18:04:48,424 ERROR [STDERR] at org.hibernate.impl.SessionImpl.fireLock(SessionImpl.java:586) | 18:04:48,424 ERROR [STDERR] at org.hibernate.impl.SessionImpl.lock(SessionImpl.java:578) | 18:04:48,424 ERROR [STDERR] at org.hibernate.ejb.AbstractEntityManagerImpl.lock(AbstractEntityManagerImpl.java:337) | 18:04:48,424 ERROR [STDERR] at org.jboss.ejb3.entity.ExtendedEntityManager.lock(ExtendedEntityManager.java:89) | 18:04:48,424 ERROR [STDERR] at tempPackage.CountFasadeBean.update(CountFasadeBean.java:51) | 18:04:48,424 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | 18:04:48,424 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) | 18:04:48,425 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) | 18:04:48,425 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:585) | 18:04:48,425 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:112) | 18:04:48,425 ERROR [STDERR] at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:166) | 18:04:48,425 ERROR [STDERR] at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63) | 18:04:48,425 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,425 ERROR [STDERR] at org.jboss.ejb3.entity.ExtendedPersistenceContextPropagationInterceptor.invoke(ExtendedPersistenceContextPropagationInterceptor.java:71) | 18:04:48,425 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,425 ERROR [STDERR] at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54) | 18:04:48,428 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,428 ERROR [STDERR] at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47) | 18:04:48,428 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,428 ERROR [STDERR] at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79) | 18:04:48,428 ERROR [STDERR] at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:197) | 18:04:48,428 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,428 ERROR [STDERR] at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) | 18:04:48,428 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,428 ERROR [STDERR] at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:81) | 18:04:48,428 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,429 ERROR [STDERR] at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78) | 18:04:48,429 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,429 ERROR [STDERR] at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) | 18:04:48,429 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,458 ERROR [STDERR] at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) | 18:04:48,458 ERROR [STDERR] at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101) | 18:04:48,458 ERROR [STDERR] at org.jboss.ejb3.stateful.StatefulContainer.dynamicInvoke(StatefulContainer.java:297) | 18:04:48,458 ERROR [STDERR] at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:106) | 18:04:48,458 ERROR [STDERR] at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82) | 18:04:48,488 ERROR [STDERR] at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828) | 18:04:48,488 ERROR [STDERR] at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681) | 18:04:48,488 ERROR [STDERR] at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358) | 18:04:48,488 ERROR [STDERR] at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412) | 18:04:48,488 ERROR [STDERR] at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239) | | can anybody help me ? Regards, Paata. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4034094#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...