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From "Claus Ibsen (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (CAMEL-3341) ProxyHelper and JMS component - need to start producer or fails with NPE
Date Thu, 18 Nov 2010 08:47:25 GMT

     [ https://issues.apache.org/activemq/browse/CAMEL-3341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Claus Ibsen resolved CAMEL-3341.
--------------------------------

       Resolution: Fixed
    Fix Version/s: 2.6.0

trunk: 1036350.

Thanks for reporting.

> ProxyHelper and JMS component - need to start producer or fails with NPE
> ------------------------------------------------------------------------
>
>                 Key: CAMEL-3341
>                 URL: https://issues.apache.org/activemq/browse/CAMEL-3341
>             Project: Apache Camel
>          Issue Type: Bug
>          Components: camel-core, camel-jms
>    Affects Versions: 2.5.0
>         Environment: linux (debian) 2.6, maven 2.2.1, pax-exam 1.2.2 (using latest felix
and equinox)
>            Reporter: Caspar MacRae
>            Assignee: Claus Ibsen
>             Fix For: 2.6.0
>
>         Attachments: ProxyHelper.diff
>
>
> I've a very simple unit test (based on http://camel.apache.org/using-camelproxy.html)
that works fine when using endpoint uri "direct:start" but fails with the following exception
when using "activemq:somequeue"
> java.lang.NullPointerException
> 	at org.apache.camel.component.jms.JmsProducer.processInOut(JmsProducer.java:140)
> 	at org.apache.camel.component.jms.JmsProducer.process(JmsProducer.java:90)
> 	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:91)
> 	at org.apache.camel.impl.DefaultAsyncProducer.process(DefaultAsyncProducer.java:37)
> 	at org.apache.camel.component.bean.CamelInvocationHandler.invoke(CamelInvocationHandler.java:65)
> 	at $Proxy7.sayWordTo(Unknown Source)
> 	at net.earcam.cdosgi.remoteserviceadmin.CamelProxyTest.simpleArgTest(CamelProxyTest.java:93)
> 	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:597)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
> 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76)
> 	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
> 	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
> 	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
> 	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
> 	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
> 	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
> 	at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
> 	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
> 	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
> 	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
> Looks like the problem is simply that the producer isn't started so never creates a UuidGenerator
(needed for the JMS Reply-To)
> org.apache.camel.component.bean.ProxyHelper - lines 45 - 51, needs to start producer
(for JmsProducer)
>     /**
>      * Creates a Proxy which sends PojoExchange to the endpoint.
>      */
>     @SuppressWarnings("unchecked")
>     public static <T> T createProxy(Endpoint endpoint, ClassLoader cl, Class[]
interfaces, MethodInfoCache methodCache) throws Exception {
>         return (T) createProxyObject(endpoint, endpoint.createProducer(), cl, interfaces,
methodCache);
>     }
> As a workaround, simply create the producer, start it and use the overloaded method createProxy
that takes a producer parameter.

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