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/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Middleware LLC.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*
*/
package org.hibernate.type;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.dom4j.Element;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.collection.PersistentCollection;
import org.hibernate.collection.PersistentMap;
import org.hibernate.collection.PersistentMapElementHolder;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.persister.collection.CollectionPersister;
public class MapType extends CollectionType {
public MapType(String role, String propertyRef, boolean isEmbeddedInXML) {
super(role, propertyRef, isEmbeddedInXML);
}
public PersistentCollection instantiate(SessionImplementor session, CollectionPersister persister, Serializable key) {
if ( session.getEntityMode()==EntityMode.DOM4J ) {
return new PersistentMapElementHolder(session, persister, key);
}
else {
return new PersistentMap(session);
}
}
public Class getReturnedClass() {
return Map.class;
}
public Iterator getElementsIterator(Object collection) {
return ( (java.util.Map) collection ).values().iterator();
}
public PersistentCollection wrap(SessionImplementor session, Object collection) {
if ( session.getEntityMode()==EntityMode.DOM4J ) {
return new PersistentMapElementHolder( session, (Element) collection );
}
else {
return new PersistentMap( session, (java.util.Map) collection );
}
}
public Object instantiate(int anticipatedSize) {
return anticipatedSize <= 0
? new HashMap()
: new HashMap( anticipatedSize + (int)( anticipatedSize * .75f ), .75f );
}
public Object replaceElements(
final Object original,
final Object target,
final Object owner,
final java.util.Map copyCache,
final SessionImplementor session)
throws HibernateException {
CollectionPersister cp = session.getFactory().getCollectionPersister( getRole() );
java.util.Map result = (java.util.Map) target;
result.clear();
Iterator iter = ( (java.util.Map) original ).entrySet().iterator();
while ( iter.hasNext() ) {
java.util.Map.Entry me = (java.util.Map.Entry) iter.next();
Object key = cp.getIndexType().replace( me.getKey(), null, session, owner, copyCache );
Object value = cp.getElementType().replace( me.getValue(), null, session, owner, copyCache );
result.put(key, value);
}
return result;
}
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;
}
}