Example usage for org.hibernate.collection.spi PersistentCollection getKey

Introduction

In this page you can find the example usage for org.hibernate.collection.spi PersistentCollection getKey.

Prototype

Serializable getKey();

Source Link

Document

Get the current collection key value

Usage

From source file:ch.algotrader.cache.CollectionHandler.java

License:Open Source License

@Override
protected CacheResponse update(Object obj) {

    if (!(obj instanceof PersistentCollection)) {
        throw new IllegalArgumentException("none PersistentCollection passed " + obj);
    }//  www  .  j av a 2  s. com

    PersistentCollection origCollection = (PersistentCollection) obj;

    // sometimes there is no role so collection initialization will not work
    if (origCollection.getRole() == null) {
        return CacheResponse.skippedObject();
    }

    synchronized (obj) {

        Object updatedCollection = this.cacheManager.getGenericDao()
                .getInitializedCollection(origCollection.getRole(), (Long) origCollection.getKey());

        // owner does not exist anymore so remove it
        if (updatedCollection == null) {

            Object owner = origCollection.getOwner();
            EntityCacheKey cacheKey = new EntityCacheKey((BaseEntityI) owner);
            this.cacheManager.getEntityCache().detach(cacheKey);

            return CacheResponse.removedObject();

        } else {

            if (updatedCollection instanceof PersistentCollection) {

                // copy the updatedCollection unto the origCollection in order to update entities holding a reference to the origCollection
                FieldUtil.copyAllFields(updatedCollection, origCollection);

                // make sure all elements of the updateCollection are in the cache
                ArrayList<EntityCacheSubKey> stack = new ArrayList<EntityCacheSubKey>();
                put(updatedCollection, stack);

                // getInitializedCollection should normally return a PersistentCollection
            } else {

                if (updatedCollection instanceof Collection) {
                    Collection<?> col = (Collection<?>) updatedCollection;
                    if (col.size() != 0) {
                        LOGGER.error("non empty collection returned instead of PersistentCollection");
                    }
                } else if (updatedCollection instanceof Map) {
                    Map<?, ?> map = (Map<?, ?>) updatedCollection;
                    if (map.size() != 0) {
                        LOGGER.error("non empty map returned instead of PersistentCollection");
                    }
                }
            }

            return CacheResponse.updatedObject(updatedCollection);
        }
    }
}

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From source file:org.granite.hibernate4.HibernateExternalizer.java

License:Open Source License

protected AbstractExternalizablePersistentCollection newExternalizableCollection(PersistentCollection value) {
    final boolean initialized = Hibernate.isInitialized(value);
    final boolean dirty = value.isDirty();

    AbstractExternalizablePersistentCollection coll = null;

    if (value instanceof PersistentSet)
        coll = new ExternalizablePersistentSet(initialized ? (Set<?>) value : null, initialized, dirty);
    else if (value instanceof PersistentList)
        coll = new ExternalizablePersistentList(initialized ? (List<?>) value : null, initialized, dirty);
    else if (value instanceof PersistentBag)
        coll = new ExternalizablePersistentBag(initialized ? (List<?>) value : null, initialized, dirty);
    else if (value instanceof PersistentMap)
        coll = new ExternalizablePersistentMap(initialized ? (Map<?, ?>) value : null, initialized, dirty);
    else/* w  w w  .  ja  v  a  2 s  . c o  m*/
        throw new UnsupportedOperationException("Unsupported Hibernate collection type: " + value);

    if (serializeMetadata != SerializeMetadata.NO
            && (serializeMetadata == SerializeMetadata.YES || !initialized) && value.getRole() != null) {
        char[] hexKey = StringUtil.bytesToHexChars(serializeSerializable(value.getKey()));
        char[] hexSnapshot = StringUtil.bytesToHexChars(serializeSerializable(value.getStoredSnapshot()));
        String metadata = new StringBuilder(
                hexKey.length + 1 + hexSnapshot.length + 1 + value.getRole().length()).append(hexKey)
                        .append(':').append(hexSnapshot).append(':').append(value.getRole()).toString();
        coll.setMetadata(metadata);
    }

    return coll;
}

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