//$Id: PersistentMapElementHolder.java 6838 2005-05-20 19:50:07Z oneovthafew $
package org.hibernate.collection;
import java.io.Serializable;
import java.util.List;
import org.dom4j.Element;
import org.hibernate.HibernateException;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.persister.collection.CollectionPersister;
import org.hibernate.type.NullableType;
import org.hibernate.type.Type;
/**
* @author Gavin King
*/
public class PersistentMapElementHolder extends PersistentIndexedElementHolder {
public PersistentMapElementHolder(SessionImplementor session, Element element) {
super( session, element );
}
public PersistentMapElementHolder(SessionImplementor session, CollectionPersister persister,
Serializable key) throws HibernateException {
super( session, persister, key );
}
public void initializeFromCache(CollectionPersister persister, Serializable disassembled, Object owner)
throws HibernateException {
Type elementType = persister.getElementType();
Type indexType = persister.getIndexType();
final String indexNodeName = getIndexAttributeName(persister);
Serializable[] cached = (Serializable[]) disassembled;
for ( int i=0; i<cached.length; ) {
Object index = indexType.assemble( cached[i++], getSession(), owner );
Object object = elementType.assemble( cached[i++], getSession(), owner );
Element subelement = element.addElement( persister.getElementNodeName() );
elementType.setToXMLNode( subelement, object, persister.getFactory() );
String indexString = ( (NullableType) indexType ).toXMLString( index, persister.getFactory() );
setIndex( subelement, indexNodeName, indexString );
}
}
public Serializable disassemble(CollectionPersister persister) throws HibernateException {
Type elementType = persister.getElementType();
Type indexType = persister.getIndexType();
final String indexNodeName = getIndexAttributeName(persister);
List elements = element.elements( persister.getElementNodeName() );
int length = elements.size();
Serializable[] result = new Serializable[length*2];
for ( int i=0; i<length*2; ) {
Element elem = (Element) elements.get(i/2);
Object object = elementType.fromXMLNode( elem, persister.getFactory() );
final String indexString = getIndex(elem, indexNodeName, i);
Object index = ( (NullableType) indexType ).fromXMLString( indexString, persister.getFactory() );
result[i++] = indexType.disassemble( index, getSession(), null );
result[i++] = elementType.disassemble( object, getSession(), null );
}
return result;
}
}