NullPointerException while binding jca pool vom java: namesp
Hello,
for JUnit testing purposes I need to access JCA Connections from a different JVM.
Since it's not recommended to put JCA Datasources in the global JNDI context, they are in the java: context, which means they ain't reachable by JUnit JVM.
From the application I access the connection by using the ctx java:/comp/env.
My idea now was to bind the datasources which are in the java: jndi context to global context with the name comp/env (like a tunnel). When I access the database from JUnit from a different JVM, the "java:" is ignored and I get the correct datasource.
(Of course this is only done in a development environment.)
Example:
(global ctx) comp/env/testdb -----------> java:/mydatasources/testdb
Unfortunately I'm having problems while binding the WrapperDatasource from the java: ctx to the global ctx. I'm getting the following NullPointerException
Maybe this is not allowed? I'm having no problems in binding dummy objects into to the global ctx.
10:25:33,593 INFO [STDOUT] bound maindb to pseudo context (for JUnit) 10:25:33,594 INFO [STDOUT] name: maindb 10:25:33,594 INFO [STDOUT] Try to bind maindb to Object=org.jboss.resource.adapter.jdbc.WrapperDataSource@7d41cd01 10:25:33,594 ERROR [STDERR] java.lang.NullPointerException 10:25:33,594 ERROR [STDERR] at org.jnp.interfaces.NamingContext.bind(NamingContext.java:556) 10:25:33,595 ERROR [STDERR] at org.jnp.interfaces.NamingContext.bind(NamingContext.java:531) 10:25:33,595 ERROR [STDERR] at test.TestServlet.init(TestServlet.java:126) 10:25:33,595 ERROR [STDERR] at javax.servlet.GenericServlet.init(GenericServlet.java:212) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1161) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:981) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4071) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.StandardContext.start(StandardContext.java:4375) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:761) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:741) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:553) 10:25:33,595 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 10:25:33,595 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 10:25:33,595 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 10:25:33,595 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:585) 10:25:33,595 ERROR [STDERR] at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) 10:25:33,595 ERROR [STDERR] at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164) 10:25:33,595 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) 10:25:33,595 ERROR [STDERR] at org.apache.catalina.core.StandardContext.init(StandardContext.java:5312) 10:25:33,595 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 10:25:33,595 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 10:25:33,595 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 10:25:33,595 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:585) 10:25:33,595 ERROR [STDERR] at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:297) 10:25:33,595 ERROR [STDERR] at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164) 10:25:33,595 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) 10:25:33,595 ERROR [STDERR] at org.jboss.web.tomcat.service.TomcatDeployer.performDeployInternal(TomcatDeployer.java:300) 10:25:33,596 ERROR [STDERR] at org.jboss.web.tomcat.service.TomcatDeployer.performDeploy(TomcatDeployer.java:104) 10:25:33,596 ERROR [STDERR] at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:372) 10:25:33,596 ERROR [STDERR] at org.jboss.web.WebModule.startModule(WebModule.java:83) 10:25:33,596 ERROR [STDERR] at org.jboss.web.WebModule.startService(WebModule.java:61) 10:25:33,596 ERROR [STDERR] at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289) 10:25:33,596 ERROR [STDERR] at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245) 10:25:33,596 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 10:25:33,596 ERROR [STDERR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) 10:25:33,596 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 10:25:33,596 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:585) 10:25:33,596 ERROR [STDERR] at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) 10:25:33,596 ERROR [STDERR] at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) 10:25:33,596 ERROR [STDERR] at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) 10:25:33,596 ERROR [STDERR] at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) 10:25:33,596 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) 10:25:33,596 ERROR [STDERR] at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:978) 10:25:33,596 ERROR [STDERR] at $Proxy0.start(Unknown Source) 10:25:33,596 ERROR [STDERR] at org.jboss.system.ServiceController.start(ServiceController.java:417) 10:25:33,596 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source) 10:25:33,596 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 10:25:33,597 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:585) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.Invocation.invoke(Invocation.java:86) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) 10:25:33,597 ERROR [STDERR] at $Proxy45.start(Unknown Source) 10:25:33,597 ERROR [STDERR] at org.jboss.web.AbstractWebContainer.start(AbstractWebContainer.java:466) 10:25:33,597 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor143.invoke(Unknown Source) 10:25:33,597 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 10:25:33,597 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:585) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.interceptor.DynamicInterceptor.invoke(DynamicInterceptor.java:97) 10:25:33,597 ERROR [STDERR] at org.jboss.system.InterceptorServiceMBeanSupport.invokeNext(InterceptorServiceMBeanSupport.java:238) 10:25:33,597 ERROR [STDERR] at org.jboss.ws.integration.jboss42.DeployerInterceptor.start(DeployerInterceptor.java:93) 10:25:33,597 ERROR [STDERR] at org.jboss.deployment.SubDeployerInterceptorSupport$XMBeanInterceptor.start(SubDeployerInterceptorSupport.java:188) 10:25:33,597 ERROR [STDERR] at org.jboss.deployment.SubDeployerInterceptor.invoke(SubDeployerInterceptor.java:95) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) 10:25:33,597 ERROR [STDERR] at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) 10:25:33,597 ERROR [STDERR] at $Proxy46.start(Unknown Source) 10:25:33,597 ERROR [STDERR] at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1025) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.MainDeployer.start(MainDeployer.java:1015) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:819) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:782) 10:25:33,598 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor18.invoke(Unknown Source) 10:25:33,598 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 10:25:33,598 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:585) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.server.Invocation.dispatch(Invocation.java:94) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.interceptor.AbstractInterceptor.invoke(AbstractInterceptor.java:133) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.interceptor.ModelMBeanOperationInterceptor.invoke(ModelMBeanOperationInterceptor.java:142) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.server.Invocation.invoke(Invocation.java:88) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659) 10:25:33,598 ERROR [STDERR] at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:210) 10:25:33,598 ERROR [STDERR] at $Proxy9.deploy(Unknown Source) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:610) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274) 10:25:33,598 ERROR [STDERR] at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)
This is the (shortened) code from my TestServlet's init method which should do the mapping:
Context javaCtx = (Context) new InitialContext().lookup("java:");
// /comp/env/jdbc exists
Context pseudo = (Context) new InitialContext().lookup("/comp/env/jdbc");
Object dbcon = null;
try
{
dbcon = javaCtx.lookup("dbcons/maindb");
}
catch (NamingException e)
{
e.printStackTrace();
}
try
{
pseudo.bind("testdb", dbcon); ==== > NullpointerException
}
catch (NamingException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
What I'm doing wrong?
Thanks for your effort!! Hubert