2 Replies Latest reply on Oct 13, 2011 2:08 PM by Yves Peter

    @Resource without type

    Yves Peter Newbie

      I'm trying to inject a queue and a connectionfactory via @Resource field annotation into a servlet:

       

      public class MDBSender extends javax.servlet.http.HttpServlet implements
              javax.servlet.Servlet {
      
          @Resource(name= "java:/queue/testQueue", type=javax.jms.Queue.class)
          private Queue queue;
      
          @Resource(name = "java:/jms/connectionFactory", type=javax.jms.ConnectionFactory.class)
          private ConnectionFactory jmsConnectionFactory;
      

       

      If I don't specify the type in the annotation JBoss throws this exception:

       

      21:21:40,897 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) Starting deployment of "MDBSender_war-0.0.1-SNAPSHOT.
      war"
      21:21:40,897 INFO  [org.jboss.as.server.controller] (DeploymentScanner-threads - 2) Replacement of deployment "MDBSender_war-0.0.1
      -SNAPSHOT.war" by deployment "MDBSender_war-0.0.1-SNAPSHOT.war" was rolled back with failure message {"Failed services" => {"jboss
      .deployment.unit.\"MDBSender_war-0.0.1-SNAPSHOT.war\".INSTALL" => "org.jboss.msc.service.StartException in service jboss.deploymen
      t.unit.\"MDBSender_war-0.0.1-SNAPSHOT.war\".INSTALL: Failed to process phase INSTALL of deployment \"MDBSender_war-0.0.1-SNAPSHOT.
      war\""},"Services with missing/unavailable dependencies" => ["jboss.naming.context.java.module.\"MDBSender_war-0.0.1-SNAPSHOT\".\"
      MDBSender_war-0.0.1-SNAPSHOT\".ValidatorFactory missing [ jboss.naming.context.java.module.\"MDBSender_war-0.0.1-SNAPSHOT\".\"MDBS
      ender_war-0.0.1-SNAPSHOT\" ]","jboss.naming.context.java.module.\"MDBSender_war-0.0.1-SNAPSHOT\".\"MDBSender_war-0.0.1-SNAPSHOT\".
      Validator missing [ jboss.naming.context.java.module.\"MDBSender_war-0.0.1-SNAPSHOT\".\"MDBSender_war-0.0.1-SNAPSHOT\" ]"]}
      21:21:40,959 WARN  [org.jboss.as.ee.component.deployers.ResourceInjectionAnnotationParsingProcessor] (MSC service thread 1-3) Can'
      t handle @Resource for ENC name: java:/queue/testQueue on class ch.mobi.test.MDBSender.MDBSender since it's missing a "lookup" (or
       "mappedName") value and isn't of any known type
      21:21:41,022 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC00001: Failed to start service jboss.deployment.unit."
      MDBSender_war-0.0.1-SNAPSHOT.war".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.unit."MDBSender_war-0.
      0.1-SNAPSHOT.war".INSTALL: Failed to process phase INSTALL of deployment "MDBSender_war-0.0.1-SNAPSHOT.war"
              at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121) [jboss-as-server-7
      .1.0.Alpha2-SNAPSHOT.jar:7.1.0.Alpha2-SNAPSHOT]
              at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824) [jboss-msc-1.0.1.GA
      .jar:1.0.1.GA]
              at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759) [jboss-msc-1.0.1.GA.jar:1.0.
      1.GA]
              at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_27]
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_27]
              at java.lang.Thread.run(Thread.java:662) [:1.6.0_27]
      Caused by: java.lang.NullPointerException
              at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor.addJndiBinding(ModuleJndiBindingProcessor.java:232)
              at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor$1.handle(ModuleJndiBindingProcessor.java:168)
              at org.jboss.as.ee.component.ClassDescriptionTraversal.run(ClassDescriptionTraversal.java:52)
              at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor.processClassConfigurations(ModuleJndiBindingProcessor.ja
      va:140)
              at org.jboss.as.ee.component.deployers.ModuleJndiBindingProcessor.deploy(ModuleJndiBindingProcessor.java:133)
              at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115) [jboss-as-server-7
      .1.0.Alpha2-SNAPSHOT.jar:7.1.0.Alpha2-SNAPSHOT]
              ... 5 more
      

       

      Shouldn't it be able to figure out the type by itself? From the Java Doc of @Ressource:

       

      http://download.oracle.com/javaee/6/api/javax/annotation/Resource.html#type%28%29

      The Java type of the resource.  For field annotations, the default is the type of the field.  For method annotations, the default is the type of the JavaBeans property. For class annotations, there is no default and this must be specified.

       

      I'm using a nightly build 7.1.0.Alpha2 1704

       

      Edit:

      With the type in the annotation a warning still appears in the log but the application deploys:

       

      22:21:11,444 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-3) Starting deployment of "MDBSender_war-0.0.1-SNAPSHOT.
      war"
      22:21:11,475 WARN  [org.jboss.as.ee.component.deployers.ResourceInjectionAnnotationParsingProcessor] (MSC service thread 1-4) Can'
      t handle @Resource for ENC name: java:/queue/testQueue on class ch.mobi.test.MDBSender.MDBSender since it's missing a "lookup" (or
       "mappedName") value and isn't of any known type
      22:21:11,506 INFO  [org.jboss.web] (MSC service thread 1-2) registering web context: /MDBSender_war-0.0.1-SNAPSHOT
      22:21:11,522 INFO  [org.jboss.as.server.controller] (DeploymentScanner-threads - 1) Replaced deployment "MDBSender_war-0.0.1-SNAPS
      HOT.war" with deployment "MDBSender_war-0.0.1-SNAPSHOT.war"
      

       

      and the queue is null.

       

      The queue is definitly bound in jndi:

      22:45:01,618 INFO  [org.hornetq.core.server.impl.HornetQServerImpl] (MSC service thread 1-1) trying to deploy queue jms.queue.test
      Queue
      22:45:01,634 INFO  [org.jboss.as.connector] (MSC service thread 1-2) JBAS010408: Starting JCA Subsystem (JBoss IronJacamar 1.0.4.F
      inal)
      22:45:01,665 INFO  [org.jboss.as.messaging] (MSC service thread 1-1) JBAS011601: Bound messaging object to jndi name java:/queue/t
      estQueue
      22:45:01,696 INFO  [org.jboss.as.messaging] (MSC service thread 1-3) JBAS011601: Bound messaging object to jndi name java:/jms/con
      nectionFactory
      
        • 1. Re: @Resource without type
          jaikiran pai Master

          Which exact JBoss AS7 version is this? It should have worked without any WARN or error messages.

           

          Edit: I just realized that you are using the "name" attribute to specify the JNDI name of the queue/connectionfactory. What you should be using is either the mappedName attribute or the lookup attribute of @Resource:

           

          @Resource(mappeName= "java:/queue/testQueue")
              private Queue queue;
           
              @Resource(mappedName = "java:/jms/connectionFactory")
              private ConnectionFactory jmsConnectionFactory;
          


          • 2. Re: @Resource without type
            Yves Peter Newbie

            Ok, it works now, thanks.

            Because of the java doc of @Resource: name I thought I had to use the global jndi name with it:

            The JNDI name of the resource. For field annotations, the default is the field name. For method annotations, the default is the JavaBeans property name corresponding to the method. For class annotations, there is no default and this must be specified.

             

            jndi somehow always manages to confuse me somehow :-)