WKTGenerator.java

/**
 * Copyright (C) 2007 - 2016 52°North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * If the program is linked with libraries which are licensed under one of
 * the following licenses, the combination of the program with the linked
 * library is not considered a "derivative work" of the program:
 *
 *       • Apache License, version 2.0
 *       • Apache Software License, version 1.0
 *       • GNU Lesser General Public License, version 3
 *       • Mozilla Public License, versions 1.0, 1.1 and 2.0
 *       • Common Development and Distribution License (CDDL), version 1.0
 *
 * Therefore the distribution of the program linked with libraries licensed
 * under the aforementioned licenses, is permitted by the copyright holders
 * if the distribution is compliant with both the GNU General Public
 * License version 2 and the aforementioned licenses.
 *
 * 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 General
 * Public License for more details.
 */
package org.n52.wps.io.datahandler.generator;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.n52.wps.io.data.IData;
import org.n52.wps.io.data.binding.complex.JTSGeometryBinding;

import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.io.WKTWriter;

/**
 * This class generates a String representation out of a JTS Geometry.
 * @author Benjamin Pross
 *
 */
public class WKTGenerator extends AbstractGenerator {

	public WKTGenerator(){
		super();
		supportedIDataTypes.add(JTSGeometryBinding.class);
	}
	
	@Override
	public InputStream generateStream(IData data, String mimeType, String schema)
			throws IOException {
		
		if(data instanceof JTSGeometryBinding){
			Geometry g = ((JTSGeometryBinding)data).getPayload();
			
			String wktString = new WKTWriter().write(g);
			
			InputStream is = new ByteArrayInputStream(wktString.getBytes());
			
			return is;
		}
		
		return null;
	}

}