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();
EntityKey key = new EntityKey( entry.getId(), entry.getPersister(), session.getEntityMode() );
persistenceContext.removeEntity(key);
persistenceContext.removeProxy(key);
if ( persister.hasCache() ) persister.getCacheAccessStrategy().remove( ck );
postDelete();
if ( getSession().getFactory().getStatistics().isStatisticsEnabled() && !veto ) {
getSession().getFactory().getStatisticsImplementor()
.deleteEntity( getPersister().getEntityName() );
}
}
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