Example usage for org.hibernate.engine.spi Status SAVING

Introduction

In this page you can find the example usage for org.hibernate.engine.spi Status SAVING.

Prototype

Status SAVING

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Usage

From source file:org.babyfish.hibernate.collection.spi.persistence.AbstractBasePersistence.java

License:Open Source License

protected static <E> Collection<E> getOrphans(XCollection<E> oldElements, XCollection<E> currentElements,
        String entityName, SessionImplementor session) throws HibernateException {

    // short-circuit(s)
    if (currentElements.isEmpty()) {
        return oldElements; // no new elements, the old list contains only Orphans
    }//w w w  . j  a v  a 2  s  .  c o m
    if (oldElements.size() == 0) {
        return oldElements; // no old elements, so no Orphans neither
    }

    final EntityPersister entityPersister = session.getFactory().getEntityPersister(entityName);
    final Type idType = entityPersister.getIdentifierType();

    // create the collection holding the Orphans
    Collection<E> res = new ArrayList<E>(oldElements.unifiedComparator());

    // collect EntityIdentifier(s) of the *current* elements - add them into a HashSet for fast access
    Set<Serializable> currentIds = new HashSet<Serializable>();
    Set<E> currentSaving = new HashSet<E>(ReferenceEqualityComparator.getInstance());
    for (E current : currentElements) {
        if (current != null && ForeignKeys.isNotTransient(entityName, current, null, session)) {
            EntityEntry ee = session.getPersistenceContext().getEntry(current);
            if (ee != null && ee.getStatus() == Status.SAVING) {
                currentSaving.add(current);
            } else {
                Serializable currentId = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, current,
                        session);
                currentIds.add(new TypedValue(idType, currentId));
            }
        }
    }

    // iterate over the *old* list
    for (E old : oldElements) {
        if (!currentSaving.contains(old)) {
            Serializable oldId = ForeignKeys.getEntityIdentifierIfNotUnsaved(entityName, old, session);
            if (!currentIds.contains(new TypedValue(idType, oldId))) {
                res.add(old);
            }
        }
    }

    return res;
}

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