/**
* Get or create the list of EntityListeners for an object. If a list is created, it will be kept
* around and re-used for later persistence operations.
*
* @param theObj the object to get EntityLIsteners for
* @return the list of EntityListeners for the object, or null if they do not exist
*/
private Collection<Object> getEntityListeners(Object theObj) {
Collection<Object> aListeners = mManagedEntityListeners.get(theObj);
if (aListeners == null) {
EntityListeners aEntityListeners =
BeanReflectUtil.getAnnotation(theObj.getClass(), EntityListeners.class);
if (aEntityListeners != null) {
// if there are entity listeners, lets create them
aListeners = new HashSet<Object>();
for (Class<?> aClass : aEntityListeners.value()) {
try {
aListeners.add(Empire.get().instance(aClass));
} catch (Exception e) {
LOGGER.error("There was an error instantiating an EntityListener. ", e);
}
}
mManagedEntityListeners.put(theObj, aListeners);
} else {
aListeners = Collections.emptyList();
}
}
return aListeners;
}
@SuppressWarnings("unchecked")
private void putEntityListeners(AnnotationInfo ai, EntityListeners entityListeners) {
Class[] entityListenerClasses = entityListeners.value();
if (entityListenerClasses == null) return;
Map<Class, List<ClassMethodEntry>> listeners = ai.getEntityListeners();
List<Class<? extends Annotation>> annotations =
Arrays.asList(
PrePersist.class,
PreUpdate.class,
PreRemove.class,
PostLoad.class,
PostPersist.class,
PostUpdate.class,
PostRemove.class);
// TODO: More than one listener per event cannot be handled like this...
for (Class clazz : entityListenerClasses) {
// System.out.println("class=" + clazz);
for (Method method : clazz.getMethods()) {
// System.out.println("method=" + method.getName());
for (Class<? extends Annotation> annotationClass : annotations) {
Annotation annotation = method.getAnnotation(annotationClass);
addListener(listeners, clazz, method, annotation, annotationClass);
}
}
}
}
private static void getListeners(XClass currentClazz, List<Class> orderedListeners) {
EntityListeners entityListeners = currentClazz.getAnnotation(EntityListeners.class);
if (entityListeners != null) {
Class[] classes = entityListeners.value();
int size = classes.length;
for (int index = size - 1; index >= 0; index--) {
orderedListeners.add(classes[index]);
}
}
if (useAnnotationAnnotatedByListener) {
Annotation[] annotations = currentClazz.getAnnotations();
for (Annotation annot : annotations) {
entityListeners = annot.getClass().getAnnotation(EntityListeners.class);
if (entityListeners != null) {
Class[] classes = entityListeners.value();
int size = classes.length;
for (int index = size - 1; index >= 0; index--) {
orderedListeners.add(classes[index]);
}
}
}
}
}
