/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.db.layer0.variable;

import org.simantics.databoard.Bindings;
import org.simantics.db.Resource;
import org.simantics.db.WriteGraph;
import org.simantics.db.exception.DatabaseException;
import org.simantics.layer0.Layer0;

public class StandardResourceVariableSpaceManipulator implements VariableSpaceManipulator {
	
	final Variable target;
	
	public StandardResourceVariableSpaceManipulator(Variable target) {
		this.target = target;
	}
	
	public Variable createVariable(WriteGraph graph, String rvi) throws DatabaseException {
		return null;
	}
	
	public Variable createProperty(WriteGraph graph, String name) throws DatabaseException {
		if("HasDescription".equals(name)) {
			Layer0 l0 = Layer0.getInstance(graph);
			Resource targetResource = target.getInterface(graph, Resource.class);
			graph.claimLiteral(targetResource, l0.HasDescription, "", Bindings.STRING);
			return target.getProperty(graph, "HasDescription");
		}
		return null;
	}
	
	public Variable createChild(WriteGraph graph, String name, Object content) throws DatabaseException {
		return null;
	}

	@Override
	public void apply(WriteGraph graph, Modification modification)
			throws DatabaseException {
		for(PropertyCreationData data : modification.newProperties) {
			createProperty(graph, data.name);
		}
	}
	
}