private void evictCache(
Object entity, EntityPersister persister, EventSource session, Object[] oldState) {
try {
SessionFactoryImplementor factory = persister.getFactory();
Set<String> collectionRoles =
factory.getCollectionRolesByEntityParticipant(persister.getEntityName());
if (collectionRoles == null || collectionRoles.isEmpty()) {
return;
}
for (String role : collectionRoles) {
CollectionPersister collectionPersister = factory.getCollectionPersister(role);
if (!collectionPersister.hasCache()) {
// ignore collection if no caching is used
continue;
}
// this is the property this OneToMany relation is mapped by
String mappedBy = collectionPersister.getMappedByProperty();
if (mappedBy != null) {
int i = persister.getEntityMetamodel().getPropertyIndex(mappedBy);
Serializable oldId = null;
if (oldState != null) {
// in case of updating an entity we perhaps have to decache 2 entity collections, this
// is the
// old one
oldId = session.getIdentifier(oldState[i]);
}
Object ref = persister.getPropertyValue(entity, i);
Serializable id = null;
if (ref != null) {
id = session.getIdentifier(ref);
}
// only evict if the related entity has changed
if (id != null && !id.equals(oldId)) {
evict(id, collectionPersister, session);
if (oldId != null) {
evict(oldId, collectionPersister, session);
}
}
} else {
LOG.debug("Evict CollectionRegion " + role);
collectionPersister.getCacheAccessStrategy().evictAll();
}
}
} catch (Exception e) {
// don't let decaching influence other logic
LOG.error("", e);
}
}
@Override
public Set<String> getCollectionRolesByEntityParticipant(String entityName) {
return delegate.getCollectionRolesByEntityParticipant(entityName);
}