Example usage for org.hibernate.engine.spi CollectionEntry getLoadedKey

Introduction

In this page you can find the example usage for org.hibernate.engine.spi CollectionEntry getLoadedKey.

Prototype

public Serializable getLoadedKey() 

Source Link

Usage

From source file:com.amalto.core.storage.hibernate.TypeMapping.java

License:Open Source License

@SuppressWarnings({ "rawtypes", "unchecked" })
protected static <T> List<T> getFullList(List valueList) {
    if (valueList == null) {
        return null;
    }/*from   w ww  .j a  v  a2  s  .co m*/
    if (!(valueList instanceof PersistentList)) {
        return valueList;
    }
    PersistentList list = (PersistentList) valueList;
    List<T> fullList = new LinkedList<T>();
    SessionImplementor session = list.getSession();
    if (!session.isConnected()) {
        throw new IllegalStateException("Session is not connected: impossible to read values from database."); //$NON-NLS-1$
    }
    CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(list);
    CollectionPersister persister = entry.getLoadedPersister();
    if (persister != null) {
        int databaseSize = persister.getSize(entry.getKey(), session);
        if (list.size() == databaseSize && !list.contains(null)) {
            // No need to reload a list (no omission in list and size() corresponds to size read from database).
            return list;
        }
        for (int i = 0; i < databaseSize; i++) {
            T wrapper = (T) persister.getElementByIndex(entry.getLoadedKey(), i, session, list.getOwner());
            fullList.add(wrapper);
        }
    }
    // Returns a unmodifiable list -> returned list is *not* a persistent list so change tracking is not possible,
    // returning a unmodifiable list is a safety for code using returned list.
    return Collections.unmodifiableList(fullList);
}

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

License:Open Source License

@Override
public final boolean setCurrentSession(SessionImplementor session) throws HibernateException {
    if (session == this.getSession()) {
        return false;
    } else {//w  w  w  .  j  av a  2s.co  m
        if (this.isConnectedToSession()) {
            CollectionEntry ce = session.getPersistenceContext()
                    .getCollectionEntry(this.getWrapperPersistentCollection());
            if (ce == null) {
                throw new HibernateException(
                        "Illegal attempt to associate a collection with two open sessions");
            } else {
                throw new HibernateException(
                        "Illegal attempt to associate a collection with two open sessions: "
                                + MessageHelper.collectionInfoString(ce.getLoadedPersister(), ce.getLoadedKey(),
                                        session.getFactory()));
            }
        } else {
            this.setSession(session);
            return true;
        }
    }
}

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From source file:org.eclipse.emf.cdo.server.internal.hibernate.HibernateStoreChunkReader.java

License:Open Source License

public List<Chunk> executeRead() {
    // get a transaction, the hibernateStoreAccessor is placed in a threadlocal
    // so all db access uses the same session.
    final Session session = getAccessor().getHibernateSession();

    // reread the revision as it is probably unreferenced
    final InternalCDORevision latestRevision = getLatestRevision(session);
    Object value = latestRevision.getValue(getFeature());
    if (value instanceof WrappedHibernateList) {
        value = ((WrappedHibernateList) value).getDelegate();
    }//from w  w  w .  j a  va2s . c  o  m

    // hibernate details...
    boolean useExtraLazyMode = false;
    boolean standardCDOList = false;
    QueryableCollection persister = null;
    CollectionEntry entry = null;
    if (value instanceof PersistentCollection) {
        final PersistentCollection persistentCollection = (PersistentCollection) value;
        persister = (QueryableCollection) ((SessionFactoryImplementor) session.getSessionFactory())
                .getCollectionPersister(persistentCollection.getRole());
        entry = ((SessionImplementor) session).getPersistenceContext().getCollectionEntry(persistentCollection);

        useExtraLazyMode = !persister.getElementType().isEntityType();
        if (useExtraLazyMode && ((PersistentCollection) value).hasQueuedOperations()) {
            session.flush();
        }
    } else {
        standardCDOList = true;
    }

    final List<Chunk> chunks = getChunks();
    for (Chunk chunk : chunks) {
        final int startIndex = chunk.getStartIndex();
        final int maxElements = chunk.size();
        if (standardCDOList) {
            // for eattributes just read them all, no chunking there...
            final CDOList list = (CDOList) value;
            if (startIndex >= list.size()) {
                return chunks;
            }
            for (int i = startIndex; i < startIndex + maxElements; i++) {
                if (i >= list.size()) {
                    break;
                }
                addToChunk(chunk, i - startIndex, list.get(i));
            }
        } else if (useExtraLazyMode) {
            if (getFeature() instanceof EReference) {
                for (int i = startIndex; i < startIndex + maxElements; i++) {
                    final Object object = persister.getElementByIndex(entry.getLoadedKey(), i,
                            (SessionImplementor) session, latestRevision);
                    // could happen if the index > size)
                    if (object == null) {
                        continue;
                    }
                    addToChunk(chunk, i - startIndex, object);
                }
            } else {
                // for eattributes just read them all, no chunking there...
                final List<?> list = (List<?>) value;
                if (startIndex >= list.size()) {
                    return chunks;
                }
                for (int i = startIndex; i < startIndex + maxElements; i++) {
                    if (i >= list.size()) {
                        break;
                    }
                    addToChunk(chunk, i - startIndex, list.get(i));
                }
            }
        } else {
            final Query filterQuery = session.createFilter(value, "");
            filterQuery.setMaxResults(maxElements);
            filterQuery.setFirstResult(startIndex);
            int i = 0;
            for (Object object : filterQuery.list()) {
                addToChunk(chunk, i++, object);
            }
        }
    }
    return chunks;
}

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From source file:org.eclipse.emf.cdo.server.internal.hibernate.tuplizer.WrappedHibernateList.java

License:Open Source License

public int size() {
    if (cachedSize != -1) {
        return cachedSize;
    }//ww  w  .ja va2s  .c om
    if (getDelegate() instanceof AbstractPersistentCollection) {
        final AbstractPersistentCollection collection = (AbstractPersistentCollection) getDelegate();
        if (collection.wasInitialized()) {
            cachedSize = -1;
            return getDelegate().size();
        }
        final SessionImplementor session = collection.getSession();
        CollectionEntry entry = session.getPersistenceContext().getCollectionEntry(collection);
        CollectionPersister persister = entry.getLoadedPersister();
        if (collection.hasQueuedOperations()) {
            session.flush();
        }
        cachedSize = persister.getSize(entry.getLoadedKey(), session);
        return cachedSize;
    }

    return getDelegate().size();
}

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