EDIT

/**

* Copyright (C) 2009 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.model.common;

import java.util.Iterator;

import java.util.Map;

import org.hibernate.HibernateException;

import org.hibernate.collection.spi.PersistentCollection;

import org.hibernate.engine.spi.SessionImplementor;

import org.hibernate.persister.collection.CollectionPersister;

import org.hibernate.usertype.UserCollectionType;

/**

 * TODO move to eu.etaxonomy.cdm.hibernate

 *

 * @author unknown

 *

 *

 */

public class PersistentMultiLanguageTextType implements UserCollectionType {

	public PersistentMultiLanguageTextType() {

	}

	@Override

    public boolean contains(Object collection, Object obj) {

		Map<?,?> map = (Map<?,?>) collection;

		return map.containsValue(obj);

	}

	@Override

    public Iterator<?> getElementsIterator(Object collection) {

		return ( (Map<?,?>) collection ).values().iterator();

	}

	@Override

    public Object indexOf(Object collection, Object element) {

		Iterator<?> iter = ( (Map<?,?>) collection ).entrySet().iterator();

		while ( iter.hasNext() ) {

			Map.Entry<?,?> me = (Map.Entry<?,?>) iter.next();

			//TODO: proxies!

			if ( me.getValue()==element ) {

                return me.getKey();

            }

		}

		return null;

	}

	@Override

	public Object instantiate(int anticipatedSize) {

		return anticipatedSize <= 0

	       ? new MultilanguageText()

	       : new MultilanguageText( anticipatedSize + (int)( anticipatedSize * .75f ), .75f );

	}

	@Override

	public PersistentCollection instantiate(SessionImplementor session, CollectionPersister persister) throws HibernateException {

		return new PersistentMultiLanguageText();

	}

	@Override

	public Object replaceElements(Object original, Object target, CollectionPersister collectionPersister,

			Object owner, @SuppressWarnings("rawtypes") Map copyCache,

			SessionImplementor sessionImplementor) throws HibernateException {

		@SuppressWarnings("unchecked")

        Map<Object,Object> result = (Map<Object,Object>) target;

		result.clear();

		Iterator<?> iter = ( (Map<?,?>) original ).entrySet().iterator();

		while ( iter.hasNext() ) {

			Map.Entry<?,?> me = (Map.Entry<?,?>) iter.next();

			Object key = collectionPersister.getIndexType().replace( me.getKey(), null, sessionImplementor, owner, copyCache );

			Object value = collectionPersister.getElementType().replace( me.getValue(), null, sessionImplementor, owner, copyCache );

			result.put(key, value);

		}

		return result;

	}

	@Override

	public PersistentCollection wrap(SessionImplementor sessionImplementor, Object collection) {

		return new PersistentMultiLanguageText( sessionImplementor, (MultilanguageText) collection );

	}

}