public void execute() throws HibernateException {
Serializable id = getId();
EntityPersister persister = getPersister();
SessionImplementor session = getSession();
Object instance = getInstance();
boolean veto = preDelete();
Object version = this.version;
if (persister.isVersionPropertyGenerated()) {
// we need to grab the version value from the entity, otherwise
// we have issues with generated-version entities that may have
// multiple actions queued during the same flush
version = persister.getVersion(instance, session.getEntityMode());
}
final CacheKey ck;
if (persister.hasCache()) {
ck =
new CacheKey(
id,
persister.getIdentifierType(),
persister.getRootEntityName(),
session.getEntityMode(),
session.getFactory());
lock = persister.getCacheAccessStrategy().lockItem(ck, version);
} else {
ck = null;
}
if (!isCascadeDeleteEnabled && !veto) {
persister.delete(id, version, instance, session);
}
// postDelete:
// After actually deleting a row, record the fact that the instance no longer
// exists on the database (needed for identity-column key generation), and
// remove it from the session cache
final PersistenceContext persistenceContext = session.getPersistenceContext();
EntityEntry entry = persistenceContext.removeEntry(instance);
if (entry == null) {
throw new AssertionFailure("possible nonthreadsafe access to session");
}
entry.postDelete();
persistenceContext.removeEntity(entry.getEntityKey());
persistenceContext.removeProxy(entry.getEntityKey());
if (persister.hasCache()) {
persister.getCacheAccessStrategy().remove(ck);
}
postDelete();
if (getSession().getFactory().getStatistics().isStatisticsEnabled() && !veto) {
getSession()
.getFactory()
.getStatisticsImplementor()
.deleteEntity(getPersister().getEntityName());
}
}
