[jboss-dev] Way to scan for classes that extend or implement

[Ales Justin]

You can already do this with existing indexes.

AnnIndex ai = ...;
Set<Class> annClasses = ai.classHasAnnotation(Path.class.getName());

HierarchyIndex hi = ...;
for (Class annClass : annClasses)
{
   Set<Class> hieClasses - hi.getSuperTypes(annClass);
   ...
}

Actually, you're in contradiction here:
* "classes that implement anntotations that are annotated with"
* MyResource is not an annotation

For "annotation on annotation" one could simply use the AI twice.

On Jun 14, 2010, at 3:43 PM, Bill Burke wrote:

> I also have written a scanner plugin that indexes classes that implement 
> anntotations that are annotated with:
> 
> i.e.
> 
> @Path
> public interface MyResource {}
> 
> public class MyResourceImpl implements MyResource {}
> 
> 
> Set<String> classes = 
> interfaceIndex.getAnntoationIndex(Path.class.getName())
> 
> 
> 
> Ales Justin wrote:
>> I've fixed this in scanning trunk, so you don't need the url anymore.
>> If null, the whole deployment unit's owning classpath will be checked.
>> 
>> For the moment you can use the scanning trunk's snapshot - the api is still the same,
>> and I'll try to do new release asap -- need to fix some CL & Deployers issue before doing the whole cycle.
>> 
>> 
>> On Jun 11, 2010, at 10:46 PM, Rémy Maucherat wrote:
>> 
>>> On Fri, Jun 11, 2010 at 5:35 PM, Bill Burke <bburke at redhat.com> wrote:
>>>> Hmmm, where you get the classpathItem from then?  AnnotationIndex
>>>> doesn't require for you to provide this info.
>>> It's just a regular VirtualFile to the JAR or exploded folder. For the
>>> classpath you could do:
>>> List<VirtualFile> classpath = (VFSDeploymentUnit) unit.getClassPath();
>>> 
>>> Rémy
>>> 
>>> _______________________________________________
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>> 
>> 
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> 
> -- 
> Bill Burke
> JBoss, a division of Red Hat
> http://bill.burkecentral.com
> 
> 
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