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From "Aaron Mulder (JIRA)" <...@geronimo.apache.org>
Subject [jira] Resolved: (GERONIMO-1851) Proxy logic busted
Date Sat, 15 Apr 2006 00:35:00 GMT
     [ http://issues.apache.org/jira/browse/GERONIMO-1851?page=all ]
     
Aaron Mulder resolved GERONIMO-1851:
------------------------------------

    Resolution: Fixed

> Proxy logic busted
> ------------------
>
>          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
>     Assignee: Dain Sundstrom
>     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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