[webbeans-dev] Web Bean discovery

[Ales Justin]

This is trivial to do in JBoss5. ;-)

http://anonsvn.jboss.org/repos/jbossas/projects/webbeans-ri-int/trunk/microcontainer/src/main/java/org/jboss/webbeans/integration/microcontainer/WebBeanDiscoveryDeployer.java

module.visit(visitor, ClassFilter.INSTANCE, null, urls.toArray(new 
URL[urls.size()]));

You only need to replace this ClassFilter parameter.
e.g. some Javassist based filter --> no need to load the class to inspect it

You could then organize your 'store' accordingly to the filter.
e.g. CombinedFilter(modifier, type, ...) --> push to sub-store

Pete Muir wrote:
> I was talking to Gavin about this, and he suggested that the discovery 
> should be more flexible and allow selectors/restrictions to be applied 
> to the classes discovered (for example, only abstract classes).
> 
> I can only speak about JBoss5, but I suspect this approach is common - 
> JBoss allows you to attach a visitor to the deployer and allows you to 
> do something with classes it finds (e.g. store them in some data 
> structure). This happens before web apps (from the Servlet listener) 
> starts.
> 
> The current approach is to discover the resources needed (as defined by 
> the spec) and store them in a datastructure, which is available later 
> for querying when we boot the Web Beans RI through the ServletListener. 
> So, the only way I can see to be more flexible is to add the ability to 
> apply selectors to the WebBeanDiscovery interface, and index the classes 
> discovered based on selectors in the jboss-webbeans integration library. 
> This requires us to define the selectors we can use. We already have:
> 
> * Modifier (for discovering abstract classes)
> * TYPE annotations
> 
> are there any others we are likely to need - it is better to define 
> these upfront before we do a release of the WebBeanDiscovery API...
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