/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2011, 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.loader.criteria;

import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;

import org.hibernate.persister.collection.QueryableCollection;
import org.hibernate.persister.entity.PropertyMapping;
import org.hibernate.type.ComponentType;
import org.hibernate.type.Type;

Author:
David Mansfield/**
 * @author David Mansfield
 */

class ComponentCollectionCriteriaInfoProvider implements CriteriaInfoProvider {
	private final QueryableCollection persister;
	private final Map<String, Type> subTypes = new HashMap<String, Type>();

	ComponentCollectionCriteriaInfoProvider(QueryableCollection persister) {
		this.persister = persister;
		if ( !persister.getElementType().isComponentType() ) {
			throw new IllegalArgumentException( "persister for role " + persister.getRole() + " is not a collection-of-component" );
		}

		ComponentType componentType = (ComponentType) persister.getElementType();
		String[] names = componentType.getPropertyNames();
		Type[] types = componentType.getSubtypes();

		for ( int i = 0; i < names.length; i++ ) {
			subTypes.put( names[i], types[i] );
		}

	}

	@Override
	public String getName() {
		return persister.getRole();
	}

	@Override
	public Serializable[] getSpaces() {
		return persister.getCollectionSpaces();
	}

	@Override
	public PropertyMapping getPropertyMapping() {
		return persister;
	}

	@Override
	public Type getType(String relativePath) {
		// TODO: can a component have a nested component? then we may need to do something more here...
		if ( relativePath.indexOf( '.' ) >= 0 ) {
			throw new IllegalArgumentException( "dotted paths not handled (yet?!) for collection-of-component" );
		}
		Type type = subTypes.get( relativePath );
		if ( type == null ) {
			throw new IllegalArgumentException( "property " + relativePath + " not found in component of collection " + getName() );
		}
		return type;
	}
}