private static Collection getDeclaredMetaAnnotations()

in xbean-finder/src/main/java/org/apache/xbean/finder/MetaAnnotatedElement.java [145:203]
44 lines of code
12 McCabe index (conditional complexity)

    private static Collection<Annotation> getDeclaredMetaAnnotations(Class<? extends Annotation> clazz) {

        Map<Class, Annotation> map = new HashMap<Class, Annotation>();

        // pull in the annotations declared on this annotation

        for (Annotation annotation : clazz.getDeclaredAnnotations()) {
            map.put(annotation.annotationType(), annotation);
        }

        List<Annotation[]> groups = new ArrayList<Annotation[]>();

        Class<? extends Annotation> metatype = getMetatype(clazz);
        if (metatype != null) {
            try {
                Class<?> def = clazz.getClassLoader().loadClass(clazz.getName() + "$$");

                List<AnnotatedElement> elements = new ArrayList<AnnotatedElement>();

                elements.addAll(asList(def.getDeclaredFields()));
                elements.addAll(asList(def.getDeclaredConstructors()));
                elements.addAll(asList(def.getDeclaredMethods()));

                for (Method method : def.getDeclaredMethods()) {
                    for (Annotation[] array : method.getParameterAnnotations()) {
                        groups.add(array);
                    }
                }

                for (Constructor constructor : def.getDeclaredConstructors()) {
                    for (Annotation[] array : constructor.getParameterAnnotations()) {
                        groups.add(array);
                    }
                }

                for (AnnotatedElement element : elements) {
                    groups.add(element.getDeclaredAnnotations());
                }

                for (Annotation[] annotations : groups) {
                    if (contains(annotations, clazz)) {
                        for (Annotation annotation : annotations) {
                            map.put(annotation.annotationType(), annotation);
                        }
                    }
                }
            } catch (ClassNotFoundException e) {
                // inner class is optional
            }
        }

        map.remove(Target.class);
        map.remove(Retention.class);
        map.remove(Documented.class);
        map.remove(metatype);
        map.remove(clazz);

        return map.values();
    }