Kai Grunert [http://community.jboss.org/people/kgrunert] created the discussion "class loading of an inbound resource adapter?" To view the discussion, visit: http://community.jboss.org/message/623879#623879 -------------------------------------------------------------- Hello, I have just written an inbound resource adapter and everything seems to work fine with it. When I deploy my RA to the JBoss 7.0.1 AS, the container calls the ResourceAdapter.start(BootstrapContext ctx) method and I get a log message that the resource adapter has been started successfully. In the next step, I try to activate an endpoint for my MDB using the following annotations: ... import de.RATest.UDPMessageListener;   @MessageDriven(messageListenerInterface = UDPMessageListener.class,     activationConfig={         @ActivationConfigProperty(propertyName = "port", propertyValue="15660") }) public class UDPMessageDrivenBean implements UDPMessageListener{          public void onMessage(String str){         ...     } } Unfortunately when I deploy the MDB, I end up with a NoClassDefFoundError and ClassNotFoundException for the MessageListener Interface: 23:56:30,367 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC00001: Failed to start service jboss.deployment.subunit."MDB_RA_TEST.ear"."MDBs.war".INSTALL: org.jboss.msc.service.StartException in service jboss.deployment.subunit."MDB_RA_TEST.ear"."MDBs.war".INSTALL: Failed to process phase INSTALL of subdeployment "MDBs.war" of deployment "MDB_RA_TEST.ear"     at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:121)     at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1765)     at org.jboss.msc.service.ServiceControllerImpl$ClearTCCLTask.run(ServiceControllerImpl.java:2291)     at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [:1.6.0_26]     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [:1.6.0_26]     at java.lang.Thread.run(Thread.java:662) [:1.6.0_26] Caused by: java.lang.LinkageError: Failed to link UDPMessageDrivenBean (Module "deployment.MDB_RA_TEST.ear.MDBs.war:main" from Service Module Loader)     at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:401)     at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:261)     at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:76)     at org.jboss.modules.Module.loadModuleClass(Module.java:588)     at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:183)     at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:358)     at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:330)     at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:307)     at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:101)     at java.lang.Class.forName0(Native Method) [:1.6.0_26]     at java.lang.Class.forName(Class.java:247) [:1.6.0_26]     at org.jboss.as.ee.component.EEClassConfigurationProcessor$1.compute(EEClassConfigurationProcessor.java:124)     at org.jboss.as.ee.component.EEClassConfigurationProcessor$1.compute(EEClassConfigurationProcessor.java:114)     at org.jboss.as.ee.component.LazyValue.get(LazyValue.java:40)     at org.jboss.as.ee.component.EEApplicationDescription.getClassConfiguration(EEApplicationDescription.java:183)     at org.jboss.as.ejb3.component.messagedriven.MessageDrivenComponentDescription.createConfiguration(MessageDrivenComponentDescription.java:78)     at org.jboss.as.ee.component.EEModuleConfigurationProcessor.deploy(EEModuleConfigurationProcessor.java:63)     at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:115)     ... 5 more Caused by: java.lang.NoClassDefFoundError: de/RATest/UDPMessageListener     at java.lang.ClassLoader.defineClass1(Native Method) [:1.6.0_26]     at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) [:1.6.0_26]     at java.lang.ClassLoader.defineClass(ClassLoader.java:615) [:1.6.0_26]     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) [:1.6.0_26]     at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:397)     ... 22 more Caused by: java.lang.ClassNotFoundException: de.RATest.UDPMessageListener from [Module "deployment.MDB_RA_TEST.ear.MDBs.war:main" from Service Module Loader]     at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:191)     at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:358)     at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:330)     at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:330)     at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:307)     at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:101)     ... 27 more I'm relatively new in the Java EE world and have not a lot of experiences with resource adapters, but this exceptions seems to me that the classes of the .RAR-file are not loaded correctly. I have read  parts of the specification and also tried a lot with different combinations of archives, for example:  a standalone .rar and a .ejb-jar file, everything inside of an .ear-file and a lot of other combination - but nothing has worked. I am actually not sure anymore, that  the resource adapter is completely correct. I have some questions that maybe could solve my problem: * do I need an JBoss specific deployment descriptor for the resource adapter? * do I have to modify the standalone-preview.xml also for an inbound resource adapter? * do I need something like the @ResourceAdapter annotation in my MDB? * if my  inbound resource adapter is correct, should I see it in the management console under "Connector" -> "Resource Adapters"? Here are some more facts, that could be important: * use of JCA 1.6 * only annotations, so I have no ra.xml or ironjacamar.xml * I have started the standalone-preview.xml without any modifications * I have checked the RA with the ironjacamar validator and ended up with a "Validation successful" I have really no clue how to go on and hope that you can help me. To simplify matters I have attached the sources. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/623879#623879] Start a new discussion in IronJacamar at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]