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Date: Fri, 14 Apr 2006 21:48:00 +0000 (GMT+00:00)
From: "Aaron Mulder (JIRA)" <dev@geronimo.apache.org>
To: dev@geronimo.apache.org
Subject: [jira] Created: (GERONIMO-1851) Proxy logic busted
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Proxy logic busted
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         Key: GERONIMO-1851
         URL: http://issues.apache.org/jira/browse/GERONIMO-1851
     Project: Geronimo
        Type: Bug
    Security: public (Regular issues) 
  Components: kernel  
    Versions: 1.1    
    Reporter: Aaron Mulder
    Priority: Critical
     Fix For: 1.1


If you go to the Import/Export portlet in 1.1, you get this:

UNEXPECTED ERROR for class org.apache.geronimo.jetty.JettyWebAppContext$$EnhancerByCGLIB$$1b72c5bb (geronimo/welcome-jetty/1.1-SNAPSHOT/car?J2EEApplication=null,j2eeType=WebModule,name=geronimo/welcome-jetty/1.1-SNAPSHOT/car)
java.lang.ArrayIndexOutOfBoundsException: -1
        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.createGBeanInvokers(ProxyMethodInterceptor.java:116)
        at org.apache.geronimo.kernel.basic.ProxyMethodInterceptor.<init>(ProxyMethodInterceptor.java:70)
        at org.apache.geronimo.kernel.basic.BasicProxyManager.getMethodInterceptor(BasicProxyManager.java:317)
        at org.apache.geronimo.kernel.basic.BasicProxyManager$ManagedProxyFactory.createProxy(BasicProxyManager.java:290)
        at org.apache.geronimo.kernel.basic.BasicProxyManager.createProxy(BasicProxyManager.java:179)
        at org.apache.geronimo.console.util.KernelManagementHelper.getModuleForConfiguration(KernelManagementHelper.java:850)

The error is generated at the last line of this snippet of ProxyMethodInterceptor:

            invokers[getSuperIndex(proxyType, proxyType.getMethod("equals", new Class[]{Object.class}))] = new EqualsInvoke(kernel);
            invokers[getSuperIndex(proxyType, proxyType.getMethod("hashCode", null))] = new HashCodeInvoke();
            invokers[getSuperIndex(proxyType, proxyType.getMethod("toString", null))] = new ToStringInvoke(proxyType.getName());
            if(GeronimoManagedBean.class.isAssignableFrom(proxyType)) {
                invokers[getSuperIndex(proxyType, proxyType.getMethod("getState", null))] = new GetStateInvoke(kernel);
                invokers[getSuperIndex(proxyType, proxyType.getMethod("getStateInstance", null))] = new GetStateInstanceInvoke(kernel);
                invokers[getSuperIndex(proxyType, proxyType.getMethod("start", null))] = new StartInvoke(kernel);

In other words, it is returning a -1 from getSuperIndex on the "start()" method for the proxyType.  However, the "if" statement established that ProxyType is assignable to GeronimoManagedBean, which has a "start()" method.

So it seems like the logic that constructs the invokers and/or whatever getSuperIndex uses is not finding all the methods that the proxy exposes, or else there are some classloader issues causing identical methods to be detected as different, etc.

The logic displayed above is unchanged from HEAD where the same portlet works, though the portlet code has changed significantly.  I'm not sure what's different elsewhere in the ProxyMethodInterceptor class or the rest of the proxy infrastructure.

To replicate this, start Geronimo, and click the "Plugins" entry in the console.

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