[WICKET-1162] Use non-default namingPolicy when creating Proxies via CGLib

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0-rc1
• Fix Version/s: 1.3.0-rc2
• Component/s: wicket-guice
• Environment: Guice 1.0,
• Assignee: Juegen Donnerstag
• Reporter: uwe schaefer
• Created: 15/Nov/07 15:24
• Updated: 02/Dec/07 09:07
• Resolved: 02/Dec/07 09:07

Description

As soon, as i use bindInterceptor(...) to an Instance, i run into a problem injecting this (CGLib enhanced) instance to a Component.

The exception thrown:

java.lang.LinkageError: loader (instance of org/mortbay/jetty/webapp/WebAppClassLoader): attempted duplicate class definition for name: "org/codesmell/jpadao/AbstractEntityDao$$FastClassByCGLIB$$aaf4cf30"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.inject.cglib.core.ReflectUtils.defineClass(ReflectUtils.java:384)
at com.google.inject.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:219)
at com.google.inject.cglib.reflect.FastClass$Generator.create(FastClass.java:64)
at com.google.inject.cglib.proxy.MethodProxy.helper(MethodProxy.java:92)
at com.google.inject.cglib.proxy.MethodProxy.init(MethodProxy.java:56)
at com.google.inject.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:186)
at com.google.inject.InterceptorStackCallback$InterceptedMethodInvocation.proceed(InterceptorStackCallback.java:66)

I assume the problem should disappear, if LazyInitProxyFactory.createProxy(...) was patched like:
[...]
CGLibInterceptor handler = new CGLibInterceptor(type, locator);
Enhancer e = new Enhancer();
e.setInterfaces(new Class[]

{Serializable.class, ILazyInitProxy.class, IWriteReplace.class}

);
e.setSuperclass(type);
e.setCallback(handler);
e.setNamingPolicy(SOME_WICKET_SPECIFIC_NAMING_POLICY); // <- single new line
return e.create();
[...]