2:08 p.m.
Hi,
Needed for EJB 3.0
I have implemented the same sample in Eclipse Ganymede RS1.
The first one call a local interface and it does not work. The second one call a remote
interface with the same business logic and it works.
I have been visiting some webs and I have found this Jboss post,
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4105969#...
He has got the solution. He is talking about @Clustered annotation.
My problem is that I have not configured my JBoss 4.2.2 GA for clustering and load
balancing. And I do not know if it is possible.
Are you following me? I mean, I do not manage these terms as well as I would like.
I have set the @Clustered annotation in my session stateless bean, and my default
configuration returns me the following exception at deployment,
| 20:44:46,576 WARN [ServiceController] Problem creating service
jboss.j2ee:service=EJB3,module=CalculatorEJB.jar
| java.lang.annotation.AnnotationFormatError: Invalid default: public abstract
java.lang.Class org.jboss.annotation.ejb.Clustered.loadBalancePolicy()
| at java.lang.reflect.Method.getDefaultValue(Unknown Source)
| at sun.reflect.annotation.AnnotationType.<init>(Unknown Source)
| at sun.reflect.annotation.AnnotationType.getInstance(Unknown Source)
| at sun.reflect.annotation.AnnotationParser.parseAnnotation(Unknown Source)
| at sun.reflect.annotation.AnnotationParser.parseAnnotations2(Unknown Source)
| at sun.reflect.annotation.AnnotationParser.parseAnnotations(Unknown Source)
| at java.lang.Class.initAnnotationsIfNecessary(Unknown Source)
| at java.lang.Class.getAnnotation(Unknown Source)
| at
org.jboss.aop.annotation.AnnotationElement.getVisibleAnnotation(AnnotationElement.java:88)
| at org.jboss.aop.Advisor.resolveAnnotation(Advisor.java:321)
| at
org.jboss.ejb3.SessionContainer.checkForDuplicateLocalAndRemoteInterfaces(SessionContainer.java:126)
| at org.jboss.ejb3.SessionContainer.instantiated(SessionContainer.java:119)
| at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:492)
| at org.jboss.ejb3.Ejb3Deployment.deployElement(Ejb3Deployment.java:442)
| at org.jboss.ejb3.Ejb3Deployment.deployUrl(Ejb3Deployment.java:423)
| at org.jboss.ejb3.Ejb3Deployment.deploy(Ejb3Deployment.java:384)
| at org.jboss.ejb3.Ejb3Deployment.create(Ejb3Deployment.java:327)
| at org.jboss.ejb3.Ejb3Module.createService(Ejb3Module.java:77)
| at
org.jboss.system.ServiceMBeanSupport.jbossInternalCreate(ServiceMBeanSupport.java:260)
| at
org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:243)
| at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at
org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
| at $Proxy0.create(Unknown Source)
| at org.jboss.system.ServiceController.create(ServiceController.java:330)
| at org.jboss.system.ServiceController.create(ServiceController.java:273)
| at sun.reflect.GeneratedMethodAccessor2.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy33.create(Unknown Source)
| at org.jboss.ejb3.EJB3Deployer.create(EJB3Deployer.java:492)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
| at
org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142)
| at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97)
| at
org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238)
| at
org.jboss.wsf.container.jboss42.DeployerInterceptor.create(DeployerInterceptor.java:76)
| at
org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.create(SubDeployerInterceptorSupport.java:180)
| at
org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:91)
| 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.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy34.create(Unknown Source)
| at org.jboss.deployment.MainDeployer.create(MainDeployer.java:969)
| at org.jboss.deployment.MainDeployer.create(MainDeployer.java:959)
| at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:818)
| at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
| at sun.reflect.GeneratedMethodAccessor21.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| 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.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy9.deploy(Unknown Source)
| at
org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
| at
org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:634)
| at
org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
| at
org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:336)
| at
org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
| at
org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
| at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at
org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978)
| at $Proxy0.start(Unknown Source)
| at org.jboss.system.ServiceController.start(ServiceController.java:417)
| at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)
| at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94)
| at org.jboss.mx.server.Invocation.invoke(Invocation.java:86)
| at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
| at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
| at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy4.start(Unknown Source)
| at org.jboss.deployment.SARDeployer.start(SARDeployer.java:302)
| at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025)
| at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819)
| at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782)
| at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:766)
| at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
| at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
| at java.lang.reflect.Method.invoke(Unknown Source)
| 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.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210)
| at $Proxy5.deploy(Unknown Source)
| at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:482)
| at org.jboss.system.server.ServerImpl.start(ServerImpl.java:362)
| at org.jboss.Main.boot(Main.java:200)
| at org.jboss.Main$1.run(Main.java:508)
| at java.lang.Thread.run(Unknown Source)
|
And at the end, the log says,
| 20:44:50,854 ERROR [URLDeploymentScanner] Incomplete Deployment listing:
|
| --- MBeans waiting for other MBeans ---
| ObjectName: jboss.j2ee:service=EJB3,module=CalculatorEJB.jar
| State: FAILED
| Reason: java.lang.annotation.AnnotationFormatError: Invalid default: public abstract
java.lang.Class org.jboss.annotation.ejb.Clustered.loadBalancePolicy()
|
| --- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
| ObjectName: jboss.j2ee:service=EJB3,module=CalculatorEJB.jar
| State: FAILED
| Reason: java.lang.annotation.AnnotationFormatError: Invalid default: public abstract
java.lang.Class org.jboss.annotation.ejb.Clustered.loadBalancePolicy()
|
This are my my class,
#1 The local interface
| package jboss.tutorial;
|
| import javax.ejb.Local;
|
| @Local
| public interface Calculator {
| public int add(int x, int y);
| public int subtract(int x, int y);
| }
|
#2 The bean
| package jboss.tutorial;
|
| import javax.ejb.Stateless;
| import org.jboss.annotation.ejb.Clustered;
|
| /**
| * Session Bean implementation class CalculatorBean
| */
| @Stateless
| @Clustered
| public class CalculatorBean implements Calculator {
|
| /**
| * Default constructor.
| */
| public CalculatorBean() {
| // TODO Auto-generated constructor stub
| }
|
| @Override
| public int add(int x, int y) {
| // TODO Auto-generated method stub
| return x + y;
| }
|
| @Override
| public int subtract(int x, int y) {
| // TODO Auto-generated method stub
| return x - y;
| }
| }
|
#3 The client
| package jboss.tutorial;
|
| import java.util.Properties;
| import javax.ejb.EJB;
| import javax.naming.InitialContext;
| import javax.naming.Context;
|
| public class CalculatorClient {
|
| @EJB
| private static Calculator calculator;
|
| public CalculatorClient() {
| try {
| Properties props = new Properties();
| props.put("java.naming.factory.initial",
"org.jnp.interfaces.NamingContextFactory");
| props.put("java.naming.factory.url.pkgs",
"jnp://localhost:1099");
| props.put("java.naming.provider.url", "jnp://localhost:1099");
| Context ctx = new InitialContext(props);
| calculator = (Calculator)
ctx.lookup("CalculatorEAR/CalculatorBean/local");
| } catch (Exception ex) {
| System.out.println("CouldnâÃÂÃÂt create calculator bean.
"+
| ex.getMessage());
| }
| }
|
| public void doOperations() {
| try {
| System.out.println("1 + 1 = " + calculator.add(1, 1));
| System.out.println("1 - 1 = " + calculator.subtract(1, 1));
|
| System.exit(0);
| } catch (Exception ex) {
| System.err.println("Caught an unexpected exception!");
| ex.printStackTrace();
| }
| }
|
| /**
| * @param args
| */
| public static void main(String[] args) {
| // TODO Auto-generated method stub
| CalculatorClient cClient = new CalculatorClient();
| cClient.doOperations();
| }
| }
|
Running the application I can instantiate the local interface, but when I call it in the
doOperations() method, it gives me the catch exception.
So I guess it is a configuration question.
Regards,
pepelara
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