Example usage for org.hibernate.collection.internal PersistentList setSnapshot

Introduction

In this page you can find the example usage for org.hibernate.collection.internal PersistentList setSnapshot.

Prototype

@Override
    public void setSnapshot(Serializable key, String role, Serializable snapshot) 

Source Link

Usage

From source file:org.jspresso.framework.application.backend.persistence.hibernate.HibernateBackendController.java

License:Open Source License

/**
 * This method wraps transient collections in the equivalent hibernate ones.
 * {@inheritDoc}//  w  ww. ja v  a  2s. c  o  m
 */
@SuppressWarnings("unchecked")
@Override
protected <E> Collection<E> wrapDetachedCollection(IEntity owner, Collection<E> detachedCollection,
        Collection<E> snapshotCollection, String role) {
    Collection<E> varSnapshotCollection = snapshotCollection;
    if (!(detachedCollection instanceof PersistentCollection)) {
        String collectionRoleName = HibernateHelper.getHibernateRoleName(getComponentContract(owner), role);
        if (collectionRoleName == null) {
            // it is not an hibernate managed collection (e.g. "detachedEntities")
            return detachedCollection;
        }
        if (detachedCollection instanceof Set) {
            PersistentSet persistentSet = new PersistentSet(null, (Set<?>) detachedCollection);
            changeCollectionOwner(persistentSet, owner);
            HashMap<Object, Object> snapshot = new HashMap<>();
            if (varSnapshotCollection == null) {
                persistentSet.clearDirty();
                varSnapshotCollection = detachedCollection;
            }
            for (Object snapshotCollectionElement : varSnapshotCollection) {
                snapshot.put(snapshotCollectionElement, snapshotCollectionElement);
            }
            persistentSet.setSnapshot(owner.getId(), collectionRoleName, snapshot);
            return persistentSet;
        } else if (detachedCollection instanceof List) {
            PersistentList persistentList = new PersistentList(null, (List<?>) detachedCollection);
            changeCollectionOwner(persistentList, owner);
            ArrayList<Object> snapshot = new ArrayList<>();
            if (varSnapshotCollection == null) {
                persistentList.clearDirty();
                varSnapshotCollection = detachedCollection;
            }
            for (Object snapshotCollectionElement : varSnapshotCollection) {
                snapshot.add(snapshotCollectionElement);
            }
            persistentList.setSnapshot(owner.getId(), collectionRoleName, snapshot);
            return persistentList;
        }
    } else {
        if (varSnapshotCollection == null) {
            ((PersistentCollection) detachedCollection).clearDirty();
        } else {
            ((PersistentCollection) detachedCollection).dirty();
        }
    }
    return detachedCollection;
}

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