Example usage for org.hibernate.engine.spi PersistenceContext getCollectionEntries

Introduction

In this page you can find the example usage for org.hibernate.engine.spi PersistenceContext getCollectionEntries.

Prototype

@Deprecated
Map getCollectionEntries();

Source Link

Document

Get the mapping from collection instance to collection entry

Usage

From source file:org.babyfish.hibernate.internal.SessionImplWrapper.java

License:Open Source License

@SuppressWarnings("unchecked")
protected static void delete(XSessionImplementor sessionProxy, Object object) {
    if (object != null) {
        SessionFactory sessionFactory = sessionProxy.getRawSessionImpl().getSessionFactory();
        PersistenceContext persistenceContext = ((org.hibernate.internal.SessionImpl) sessionProxy
                .getRawSessionImpl()).getPersistenceContext();
        Map<PersistentCollection, CollectionEntry> collectionEntries = persistenceContext
                .getCollectionEntries();
        for (Entry<PersistentCollection, CollectionEntry> entry : collectionEntries.entrySet()) {
            PersistentCollection persistentCollection = entry.getKey();
            if (persistentCollection.wasInitialized()) {
                CollectionMetadata collectionMetadata = sessionFactory
                        .getCollectionMetadata(persistentCollection.getRole());
                Class<?> elementClass = collectionMetadata.getElementType().getReturnedClass();
                if (elementClass.isAssignableFrom(object.getClass())) {
                    if (persistentCollection instanceof Map<?, ?>) {
                        ((Map<?, ?>) persistentCollection).values().remove(object);
                    } else if (persistentCollection instanceof Collection<?>) {
                        ((Collection<?>) persistentCollection).remove(object);
                    }//from  w w w.j  a  v a  2  s. c o m
                }
            }
        }
        Class<?> clazz = object.getClass();
        Collection<HbmReference> hbmReferences = null;
        NavigableMap<Class<?>, Collection<HbmReference>> hbmReferencesByTargetClass = (NavigableMap<Class<?>, Collection<HbmReference>>) ((XSessionFactoryImplementor) sessionProxy
                .getFactory()).getInternalData(SessionFactoryImplWrapper.IDK_HBM_REFERENCES_BY_TARGET_CLASS);
        for (Entry<Class<?>, Collection<HbmReference>> entry : hbmReferencesByTargetClass.descendingMap()
                .entrySet()) {
            if (entry.getKey().isAssignableFrom(clazz)) {
                hbmReferences = entry.getValue();
                break;
            }
        }
        if (hbmReferences != null) {
            EntityReferenceComparator<? super Object> referenceComparator = EntityReferenceComparator
                    .getInstance();
            Entry<Object, EntityEntry>[] entityEntries = persistenceContext.reentrantSafeEntityEntries();
            if (entityEntries != null) {
                for (Entry<Object, EntityEntry> entry : entityEntries) {
                    Object entity = entry.getKey();
                    if (Hibernate.isInitialized(entity)) {
                        EntityPersister persister = entry.getValue().getPersister();
                        ClassMetadata classMetadata = persister.getClassMetadata();
                        for (HbmReference hbmReference : hbmReferences) {
                            if (hbmReference.ownerMetadata == classMetadata) {
                                Object expectedObject = persister.getPropertyValue(entity,
                                        hbmReference.propertyIndex);
                                if (referenceComparator.same(expectedObject, object)) {
                                    persister.setPropertyValue(entity, hbmReference.propertyIndex, null);
                                }
                            }
                        }
                    }
                }
            }
        }
    }
    sessionProxy.getRawSessionImpl().delete(object);
}

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