[
http://jira.jboss.com/jira/browse/EJBTHREE-665?page=comments#action_12395996 ]
Chris Bredesen commented on EJBTHREE-665:
-----------------------------------------
But looking at the EJB3 core spec, we can look in section 4.4.1 Operations Allowed in the
Methods of a Stateful Session Bean Class; Table 1 Operations Allowed in the Methods of a
Stateful Session Bean. Looking at the row labeled "SessionContext ...
PostConstruct..." we see that EntityManager access is allowed in both CMT and BMT
scenarios. This is on page 79.
What gives?
@PostConstruct throws NPE when EntityManager is used
----------------------------------------------------
Key: EJBTHREE-665
URL:
http://jira.jboss.com/jira/browse/EJBTHREE-665
Project: EJB 3.0
Issue Type: Bug
Components: EJB3 Extensions
Affects Versions: EJB 3.0 RC8 - FD
Environment: Windows XP, JBoss 4.0.4.GA + EJB-3.0-RC8
Reporter: Steven Verze
Assigned To: Carlo de Wolf
Fix For: AS 4.2.3.GA
Attachments: EJB-665.patch, EJB-665.patch, EJB-665.patch
@PostConstruct method throws NPE when called on a stateless session bean.
The method iteself accesses the enetity manager and tries create a query, the following
exception is experienced:
java.lang.RuntimeException: java.lang.NullPointerException
at
org.jboss.ejb3.interceptor.LifecycleInterceptorHandler.postConstruct(LifecycleInterceptorHandler.java:109)
at org.jboss.ejb3.EJBContainer.invokePostConstruct(EJBContainer.java:582)
at org.jboss.ejb3.AbstractPool.create(AbstractPool.java:108)
at org.jboss.ejb3.ThreadlocalPool.get(ThreadlocalPool.java:48)
at
org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:54)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at
org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
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:227)
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:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at
org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:398)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
Caused by: java.lang.NullPointerException
at
org.jboss.ejb3.entity.ManagedEntityManagerFactory.getNonTxEntityManager(ManagedEntityManagerFactory.java:58)
at
org.jboss.ejb3.entity.ManagedEntityManagerFactory.getTransactionScopedEntityManager(ManagedEntityManagerFactory.java:163)
at
org.jboss.ejb3.entity.TransactionScopedEntityManager.createQuery(TransactionScopedEntityManager.java:125)
at
com.teleglobal.modules.snapaccount.services.SnapAccountSendProcessServiceBean.initialiseSpendCardQuery(SnapAccountSendProcessServiceBean.java:83)
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.jboss.ejb3.interceptor.LifecycleInvocationContextImpl.proceed(LifecycleInvocationContextImpl.java:159)
at
org.jboss.ejb3.interceptor.LifecycleInterceptorHandler.postConstruct(LifecycleInterceptorHandler.java:105)
at org.jboss.ejb3.EJBContainer.invokePostConstruct(EJBContainer.java:582)
at org.jboss.ejb3.AbstractPool.create(AbstractPool.java:108)
at org.jboss.ejb3.ThreadlocalPool.get(ThreadlocalPool.java:48)
at
org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:54)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at
org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47)
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:227)
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:828)
at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681)
at
org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358)
at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:398)
at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239)
at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:190)
at org.jboss.remoting.Client.invoke(Client.java:525)
at org.jboss.remoting.Client.invoke(Client.java:488)
at
org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:55)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at
org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at
org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:55)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:78)
at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
at org.jboss.ejb3.stateless.StatelessRemoteProxy.invoke(StatelessRemoteProxy.java:102)
at $Proxy3.getBatchNumbers(Unknown Source)
at
com.teleglobal.modules.snapaccount.services.SnapAccountSendProcessServiceTest.testGetBatchNumbers(SnapAccountSendProcessServiceTest.java:57)
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 junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:478)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:344)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Here is a the post construct method:
@PostConstruct
void initialiseSpendCardQuery()
{
StringBuilder sendCardQueryString = new StringBuilder();
sendCardQueryString.append("SELECT c FROM Card AS c WHERE c.status = 'U'
AND c.batchNumber IN (");
long[] batchNumbers = getBatchNumbers();
for (int i = 0; i < batchNumbers.length; i++)
{
sendCardQueryString.append("?").append(i);
if (i+1 < batchNumbers.length)
sendCardQueryString.append(",");
}
sendCardQueryString.append(") AND c NOT IN (SELECT lc.sendCard FROM SendCardLock
AS lc)");
sendCardQuery = entityManager.createQuery(sendCardQueryString.toString());
for (int i = 0; i < batchNumbers.length; i++)
sendCardQuery.setParameter(i, batchNumbers[i]);
}
It happens when the entityManager is used.
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