5 Replies Latest reply on Sep 27, 2006 4:02 PM by Jason Holmes

    Default JNDI Naming

    Michael Postmann Newbie

      Hi!

      I'm currently exploring EJB 3.0 using the Book "Mastering EJB 3.0 4th Edition".
      I have written a small test-session-bean.

      It consists of the following:
      MyMath.java

      package at.tac.ejb3.test.mymath;
      
      /**
       * @author michael
       * @version 0.1.0.0 27.09.2006
       */
      public interface MyMath {
       public Integer sum(Integer a, Integer b);
      }
      

      MyMathBean.java
      /**
       *
       * @author michael
       * @version 0.1.0.0 27.09.2006
       */
      package at.tac.ejb3.test.mymath;
      
      import javax.ejb.Stateless;
      import javax.ejb.Remote;
      import javax.ejb.Local;
      
      @Stateless
      @Remote(MyMath.class)
      @Local(MyMath.class)
      public class MyMathBean implements MyMath{
       public Integer sum(Integer a, Integer b) {
       return a + b;
       }
      }
      

      It has no ejb-jar.xml and the jboss.xml, persistence.xml and jbosscmp-jdbc.xml don't contain any valuable data.

      My first Question now: What is the name of my "Bean" now? "MyMath" or "MyMathBean"?

      In the book I read
      The EJB 3.0 specification mandates that containers bind beans to the JNDI tree by their fully qualified names at deployment time. This ensures that we can look up the beans in a very simple way.


      But when I invoke list() on the JNDIView Bean using jmx-console I get:
      java: Namespace
       +- XAConnectionFactory (class: org.jboss.mq.SpyXAConnectionFactory)
       +- DefaultDS (class: org.jboss.resource.adapter.jdbc.WrapperDataSource)
       +- SecurityProxyFactory (class: org.jboss.security.SubjectSecurityProxyFactory)
       +- DefaultJMSProvider (class: org.jboss.jms.jndi.JNDIProviderAdapter)
       +- comp (class: javax.naming.Context)
       +- JmsXA (class: org.jboss.resource.adapter.jms.JmsConnectionFactoryImpl)
       +- ConnectionFactory (class: org.jboss.mq.SpyConnectionFactory)
       +- jaas (class: javax.naming.Context)
       | +- other (class: org.jboss.security.plugins.SecurityDomainContext)
       | +- HsqlDbRealm (class: org.jboss.security.plugins.SecurityDomainContext)
       | +- jbossmq (class: org.jboss.security.plugins.SecurityDomainContext)
       | +- JmsXARealm (class: org.jboss.security.plugins.SecurityDomainContext)
       +- timedCacheFactory (class: javax.naming.Context)
      Failed to lookup: timedCacheFactory, errmsg=org.jboss.util.TimedCachePolicy
       +- TransactionPropagationContextExporter (class: org.jboss.tm.TransactionPropagationContextFactory)
       +- StdJMSPool (class: org.jboss.jms.asf.StdServerSessionPoolFactory)
       +- Mail (class: javax.mail.Session)
       +- comp.ejb3 (class: javax.naming.Context)
       | NonContext: null
       +- TransactionPropagationContextImporter (class: org.jboss.tm.TransactionPropagationContextImporter)
       +- TransactionManager (class: org.jboss.tm.TxManager)
      
      Global JNDI Namespace
       +- XAConnectionFactory (class: org.jboss.mq.SpyXAConnectionFactory)
       +- TopicConnectionFactory (class: org.jboss.naming.LinkRefPair)
       +- EventDispatcher (class: org.jboss.ws.eventing.mgmt.DispatcherDelegate)
       +- UserTransactionSessionFactory (proxy: $Proxy42 implements interface org.jboss.tm.usertx.interfaces.UserTransactionSessionFactory)
       +- UIL2ConnectionFactory[link -> ConnectionFactory] (class: javax.naming.LinkRef)
       +- UIL2XAConnectionFactory[link -> XAConnectionFactory] (class: javax.naming.LinkRef)
       +- QueueConnectionFactory (class: org.jboss.naming.LinkRefPair)
       +- topic (class: org.jnp.interfaces.NamingContext)
       | +- testDurableTopic (class: org.jboss.mq.SpyTopic)
       | +- testTopic (class: org.jboss.mq.SpyTopic)
       | +- securedTopic (class: org.jboss.mq.SpyTopic)
       +- queue (class: org.jnp.interfaces.NamingContext)
       | +- A (class: org.jboss.mq.SpyQueue)
       | +- testQueue (class: org.jboss.mq.SpyQueue)
       | +- ex (class: org.jboss.mq.SpyQueue)
       | +- DLQ (class: org.jboss.mq.SpyQueue)
       | +- D (class: org.jboss.mq.SpyQueue)
       | +- C (class: org.jboss.mq.SpyQueue)
       | +- B (class: org.jboss.mq.SpyQueue)
       +- MyMathBean (class: org.jnp.interfaces.NamingContext)
       | +- local (proxy: $Proxy73 implements interface at.tac.ejb3.test.mymath.MyMath,interface org.jboss.ejb3.JBossProxy,interface javax.ejb.EJBLocalObject)
       | +- remote (proxy: $Proxy72 implements interface at.tac.ejb3.test.mymath.MyMath,interface org.jboss.ejb3.JBossProxy,interface javax.ejb.EJBObject)
       +- ConnectionFactory (class: org.jboss.mq.SpyConnectionFactory)
       +- UserTransaction (class: org.jboss.tm.usertx.client.ClientUserTransaction)
       +- jmx (class: org.jnp.interfaces.NamingContext)
       | +- invoker (class: org.jnp.interfaces.NamingContext)
       | | +- RMIAdaptor (proxy: $Proxy36 implements interface org.jboss.jmx.adaptor.rmi.RMIAdaptor,interface org.jboss.jmx.adaptor.rmi.RMIAdaptorExt)
       | +- rmi (class: org.jnp.interfaces.NamingContext)
       | | +- RMIAdaptor[link -> jmx/invoker/RMIAdaptor] (class: javax.naming.LinkRef)
       +- UILXAConnectionFactory[link -> XAConnectionFactory] (class: javax.naming.LinkRef)
       +- UILConnectionFactory[link -> ConnectionFactory] (class: javax.naming.LinkRef)
      

      and JBoss throws an error to the console:
      13:46:33,895 ERROR [JNDIView] JNDIView.getHAJndiAttributes() failed
      java.lang.NullPointerException: name cannot be null
       at javax.management.ObjectName.construct(ObjectName.java:342)
       at javax.management.ObjectName.<init>(ObjectName.java:1304)
       at org.jboss.naming.JNDIView.getHAJndiAttributes(JNDIView.java:836)
       at org.jboss.naming.JNDIView.getHAUrl(JNDIView.java:811)
       at org.jboss.naming.JNDIView.list(JNDIView.java:193)
       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.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
       at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
       at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
       at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
       at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
       at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
       at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
       at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
       at org.jboss.jmx.adaptor.control.Server.invokeOpByName(Server.java:258)
       at org.jboss.jmx.adaptor.control.Server.invokeOp(Server.java:223)
       at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.invokeOp(HtmlAdaptorServlet.java:262)
       at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.processRequest(HtmlAdaptorServlet.java:100)
       at org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.doPost(HtmlAdaptorServlet.java:82)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
       at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
       at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
       at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
       at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
       at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
       at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
       at java.lang.Thread.run(Thread.java:595)
      


      So what do I have to do to get
      context.lookup(MyMath.class.getName()); or
      context.lookup(MyMathBean.class.getName()); (I don't know which is right)
      working as in the book?

      thx in advance

      nomike aka Michael Postmann