Re: [webbeans-dev] Web Bean discovery

> Any idea how portable such an approach will be to other app servers? No idea, never looked into details of anything else than ours truly. ;-)

So, you're thinking of something like this: WebBeansDiscovery wbd = ...; ClassFilter cf = new ModifierClassFilter(ABSTRACT); Set<Class<?>> abstractClasses = wbd.search(cf) In the worst case this would be implemented on top of all classes: WBD impl detail: public Set<Class<?>> search(ClassFilter cf) { Set<Class<?>> result = new HashSet<Class<?>>(); for (Class<?> clazz : allClasses) { if (cf.accepts(clazz)) result.add(clazz); } // TODO - some cache here return result; } Where we could already easily prepare this info when we do visitor pattern - performance optimization. Or what exactly are you trying to do?