[jboss-dev-forums] [JBoss Microcontainer Development] - Re: Adding getAnnotationsAnnotatedWith() to MDR

[kabir.khan@jboss.com]

"alesj" wrote : Why would you need this?
  | I don't see anything similar in CachingMDC for other retrieveX methods.
  | 

The problem is that I want to only iterate over everything once, which means I have to create the annotations item myself, e.g.:

  |       @SuppressWarnings("unchecked")
  |       Cache<Class, AnnotationsItem> cached = cachedMetaAnnotations;
  |       if (cached == null)
  |       {
  |          AnnotationsItem item = retrieveAnnotations();
  |          if (item.getAnnotations().length > 0)
  |          {
  |             Map<Class<? extends Annotation>, List<AnnotationItem<?>>> annotations = new HashMap<Class<? extends Annotation>, List<AnnotationItem<?>>>();
  |             for (AnnotationItem<?> annotation : item.getAnnotations())
  |             {
  |                for (Annotation current : annotation.getAnnotation().annotationType().getAnnotations())
  |                {
  |                   List<AnnotationItem<?>> annotationsForMeta = annotations.get(current.annotationType());
  |                   if (annotationsForMeta == null)
  |                   {
  |                      annotationsForMeta = new ArrayList<AnnotationItem<?>>();
  |                      annotations.put(current.annotationType(), annotationsForMeta);
  |                   }
  |                   annotationsForMeta.add(annotation);
  |                }
  |             }
  |             
  |             cached = factory.createCache(Class.class, AnnotationsItem.class, getFqn());
  |             for (Map.Entry<Class<? extends Annotation>, List<AnnotationItem<?>>> entry : annotations.entrySet())
  |             {
  |                
  |                AnnotationsItem basic = new BasicAnnotationsItem(null, entry.getValue().toArray(new AnnotationItem<?>[entry.getValue().size()] ));
  |                cached.put(entry.getKey(), basic);
  |             }
  |          }
  |          cachedMetaAnnotations = cached;
  |       }
  |       return cached.get(meta);
  | 
So, I need to create the annotations item myself. If I don't pass in a loader, the BasicAnnotationsItem will fail on isCachable() since that calls the loader. This problem will also occur if when I move the pre-indexing logic into AbstractMetaDataContext.



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