@Override
public void delete(Serializable id, Object version, Object object, SessionImplementor session)
throws HibernateException {
final int span = getTableSpan();
if (span > 1) {
throw new HibernateException(
"Hibernate OGM does not yet support entities spanning multiple tables");
}
final EntityMetamodel entityMetamodel = getEntityMetamodel();
boolean isImpliedOptimisticLocking = !entityMetamodel.isVersioned() && isAllOrDirtyOptLocking();
Object[] loadedState = null;
if (isImpliedOptimisticLocking) {
// need to treat this as if it where optimistic-lock="all" (dirty does *not* make sense);
// first we need to locate the "loaded" state
//
// Note, it potentially could be a proxy, so doAfterTransactionCompletion the location the
// safe way...
org.hibernate.engine.spi.EntityKey key = session.generateEntityKey(id, this);
Object entity = session.getPersistenceContext().getEntity(key);
if (entity != null) {
EntityEntry entry = session.getPersistenceContext().getEntry(entity);
loadedState = entry.getLoadedState();
}
}
final EntityKey key = EntityKeyBuilder.fromPersister(this, id, session);
final Tuple resultset = gridDialect.getTuple(key, this.getTupleContext());
final SessionFactoryImplementor factory = getFactory();
if (isImpliedOptimisticLocking && loadedState != null) {
// we need to utilize dynamic delete statements
for (int j = span - 1; j >= 0; j--) {
boolean[] versionability = getPropertyVersionability();
// TODO do a diff on the properties value from resultset
GridType[] types = gridPropertyTypes;
for (int i = 0; i < entityMetamodel.getPropertySpan(); i++) {
boolean include = isPropertyOfTable(i, j) && versionability[i];
if (include) {
final GridType type = types[i];
final Object snapshotValue =
type.nullSafeGet(resultset, getPropertyColumnNames(i), session, object);
// TODO support other entity modes
if (!type.isEqual(loadedState[i], snapshotValue, factory)) {
if (factory.getStatistics().isStatisticsEnabled()) {
factory.getStatisticsImplementor().optimisticFailure(getEntityName());
}
throw new StaleObjectStateException(getEntityName(), id);
}
}
}
}
} else {
if (entityMetamodel.isVersioned()) {
checkVersionAndRaiseSOSE(id, version, session, resultset);
}
}
for (int j = span - 1; j >= 0; j--) {
if (isInverseTable(j)) {
return;
}
if (log.isTraceEnabled()) {
log.trace("Deleting entity: " + MessageHelper.infoString(this, id, factory));
if (j == 0 && isVersioned()) {
log.trace("Version: " + version);
}
}
// delete association information
// needs to be executed before the tuple removal because the AtomicMap in ISPN is cleared upon
// removal
new EntityDehydrator()
.gridDialect(gridDialect)
.gridPropertyTypes(gridPropertyTypes)
.gridIdentifierType(gridIdentifierType)
.id(id)
.persister(this)
.resultset(resultset)
.session(session)
.tableIndex(j)
.onlyRemovePropertyMetadata()
.dehydrate();
gridDialect.removeTuple(key, getTupleContext());
}
}
/**
* Perform the entity deletion. Well, as with most operations, does not really perform it; just
* schedules an action/execution with the {@link org.hibernate.engine.spi.ActionQueue} for
* execution during flush.
*
* @param session The originating session
* @param entity The entity to delete
* @param entityEntry The entity's entry in the {@link PersistenceContext}
* @param isCascadeDeleteEnabled Is delete cascading enabled?
* @param persister The entity persister.
* @param transientEntities A cache of already deleted entities.
*/
protected final void deleteEntity(
final EventSource session,
final Object entity,
final EntityEntry entityEntry,
final boolean isCascadeDeleteEnabled,
final boolean isOrphanRemovalBeforeUpdates,
final EntityPersister persister,
final Set transientEntities) {
if (LOG.isTraceEnabled()) {
LOG.tracev(
"Deleting {0}",
MessageHelper.infoString(persister, entityEntry.getId(), session.getFactory()));
}
final PersistenceContext persistenceContext = session.getPersistenceContext();
final Type[] propTypes = persister.getPropertyTypes();
final Object version = entityEntry.getVersion();
final Object[] currentState;
if (entityEntry.getLoadedState() == null) {
// ie. the entity came in from update()
currentState = persister.getPropertyValues(entity);
} else {
currentState = entityEntry.getLoadedState();
}
final Object[] deletedState = createDeletedState(persister, currentState, session);
entityEntry.setDeletedState(deletedState);
session
.getInterceptor()
.onDelete(
entity, entityEntry.getId(), deletedState, persister.getPropertyNames(), propTypes);
// before any callbacks, etc, so subdeletions see that this deletion happened first
persistenceContext.setEntryStatus(entityEntry, Status.DELETED);
final EntityKey key = session.generateEntityKey(entityEntry.getId(), persister);
cascadeBeforeDelete(session, persister, entity, entityEntry, transientEntities);
new ForeignKeys.Nullifier(entity, true, false, session)
.nullifyTransientReferences(entityEntry.getDeletedState(), propTypes);
new Nullability(session).checkNullability(entityEntry.getDeletedState(), persister, true);
persistenceContext.getNullifiableEntityKeys().add(key);
if (isOrphanRemovalBeforeUpdates) {
// TODO: The removeOrphan concept is a temporary "hack" for HHH-6484. This should be removed
// once action/task
// ordering is improved.
session
.getActionQueue()
.addAction(
new OrphanRemovalAction(
entityEntry.getId(),
deletedState,
version,
entity,
persister,
isCascadeDeleteEnabled,
session));
} else {
// Ensures that containing deletions happen before sub-deletions
session
.getActionQueue()
.addAction(
new EntityDeleteAction(
entityEntry.getId(),
deletedState,
version,
entity,
persister,
isCascadeDeleteEnabled,
session));
}
cascadeAfterDelete(session, persister, entity, transientEntities);
// the entry will be removed after the flush, and will no longer
// override the stale snapshot
// This is now handled by removeEntity() in EntityDeleteAction
// persistenceContext.removeDatabaseSnapshot(key);
}
