/**
* Cascades the detach operation.
*
* @param entityManager the entity manager
* @since 2.0.0
*/
public void cascadeDetach(EntityManagerImpl entityManager) {
this.status = Status.DETACHED;
ManagedInstance.LOG.debug("Cascading detach on {0}", this);
for (final AssociationMappingImpl<?, ?, ?> association :
this.type.getAssociationsDetachable()) {
// if the association a collection attribute then we will cascade to each element
if (association instanceof PluralAssociationMappingImpl) {
final PluralAssociationMappingImpl<?, ?, ?> mapping =
(PluralAssociationMappingImpl<?, ?, ?>) association;
final Collection<?> collection;
if (mapping.getAttribute().getCollectionType() == CollectionType.MAP) {
collection = ((Map<?, ?>) mapping.get(this.instance)).values();
} else {
// extract the collection
collection = (Collection<?>) mapping.get(this.instance);
}
// cascade to each element in the collection
if (collection instanceof List) {
final List<?> list = (List<?>) collection;
for (int i = 0; i < list.size(); i++) {
entityManager.detach(list.get(i));
}
} else {
for (final Object element : collection) {
entityManager.detach(element);
}
}
} else {
final SingularAssociationMappingImpl<?, ?> mapping =
(SingularAssociationMappingImpl<?, ?>) association;
final Object associate = mapping.get(this.instance);
entityManager.detach(associate);
}
}
}
