Examples with DETACHED org.hibernate.event.internal.EntityState.DETACHED used on opensource projects

Example 1 with DETACHED

use of org.hibernate.event.internal.EntityState.DETACHED in project hibernate-reactive by hibernate.

the class DefaultReactiveMergeEventListener method entityIsDetached.

protected CompletionStage<Void> entityIsDetached(MergeEvent event, MergeContext copyCache) {
    LOG.trace("Merging detached instance");
    final Object entity = event.getEntity();
    final EventSource source = event.getSession();
    final EntityPersister persister = source.getEntityPersister(event.getEntityName(), entity);
    final String entityName = persister.getEntityName();
    Serializable requestedId = event.getRequestedId();
    Serializable id;
    if (requestedId == null) {
        id = persister.getIdentifier(entity, source);
    } else {
        id = requestedId;
        // check that entity id = requestedId
        Serializable entityId = persister.getIdentifier(entity, source);
        if (!persister.getIdentifierType().isEqual(id, entityId, source.getFactory())) {
            throw LOG.mergeRequestedIdNotMatchingIdOfPassedEntity();
        }
    }
    String previousFetchProfile = source.getLoadQueryInfluencers().getInternalFetchProfile();
    source.getLoadQueryInfluencers().setInternalFetchProfile("merge");
    // we must clone embedded composite identifiers, or
    // we will get back the same instance that we pass in
    final Serializable clonedIdentifier = (Serializable) persister.getIdentifierType().deepCopy(id, source.getFactory());
    return source.unwrap(ReactiveSession.class).reactiveGet((Class<?>) persister.getMappedClass(), clonedIdentifier).thenCompose(result -> {
        if (result != null) {
            // before cascade!
            copyCache.put(entity, result, true);
            Object target = unproxyManagedForDetachedMerging(entity, result, persister, source);
            if (target == entity) {
                throw new AssertionFailure("entity was not detached");
            } else if (!source.getEntityName(target).equals(entityName)) {
                throw new WrongClassException("class of the given object did not match class of persistent copy", event.getRequestedId(), entityName);
            } else if (isVersionChanged(entity, source, persister, target)) {
                final StatisticsImplementor statistics = source.getFactory().getStatistics();
                if (statistics.isStatisticsEnabled()) {
                    statistics.optimisticFailure(entityName);
                }
                throw new StaleObjectStateException(entityName, id);
            }
            // copy created before we actually copy
            return cascadeOnMerge(source, persister, entity, copyCache).thenCompose(v -> fetchAndCopyValues(persister, entity, target, source, copyCache)).thenAccept(v -> {
                // copyValues() (called by fetchAndCopyValues) works by reflection,
                // so explicitly mark the entity instance dirty
                markInterceptorDirty(entity, target, persister);
                event.setResult(result);
            });
        } else {
            // really persistent
            return entityIsTransient(event, copyCache);
        }
    }).whenComplete((v, e) -> source.getLoadQueryInfluencers().setInternalFetchProfile(previousFetchProfile));
}