/**
 * Copyright (c) 2010-2013 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.gis.spatial.pipes.processing;

import org.neo4j.gis.spatial.pipes.AbstractExtractGeoPipe;
import org.neo4j.gis.spatial.pipes.GeoPipeFlow;

/**
 * Extracts every geometry contained in an item multi geometry.
 */
public class ExtractGeometries extends AbstractExtractGeoPipe {
	
	@Override
	protected void extract(GeoPipeFlow pipeFlow) {
		if (pipeFlow.getGeometry().getNumGeometries() == 1) {
			extracts.add(pipeFlow);
		} else {
			int numGeom = pipeFlow.getGeometry().getNumGeometries();
			for (int i = 0; i < numGeom; i++) {
				GeoPipeFlow newGeom = pipeFlow.makeClone("geometry" + i);
				newGeom.setGeometry(pipeFlow.getGeometry().getGeometryN(i));
				extracts.add(newGeom);
			}
		}
	}
}
