001/*
002 * Copyright (c) 2014-2015 The Regents of the University of California.
003 * All rights reserved.
004 *
005 * '$Author: crawl $'
006 * '$Date: 2015-12-18 01:13:43 +0000 (Fri, 18 Dec 2015) $' 
007 * '$Revision: 34349 $'
008 * 
009 * Permission is hereby granted, without written agreement and without
010 * license or royalty fees, to use, copy, modify, and distribute this
011 * software and its documentation for any purpose, provided that the above
012 * copyright notice and the following two paragraphs appear in all copies
013 * of this software.
014 *
015 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
016 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
017 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
018 * THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
019 * SUCH DAMAGE.
020 *
021 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
022 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
023 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
024 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
025 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
026 * ENHANCEMENTS, OR MODIFICATIONS.
027 *
028 */
029package org.kepler.gis.actor.conversions;
030
031import org.kepler.gis.data.VectorToken;
032import org.kepler.gis.util.VectorUtilities;
033
034import ptolemy.actor.lib.Transformer;
035import ptolemy.data.StringToken;
036import ptolemy.data.type.BaseType;
037import ptolemy.kernel.CompositeEntity;
038import ptolemy.kernel.util.IllegalActionException;
039import ptolemy.kernel.util.NameDuplicationException;
040
041/** Actor that converts a vector token to a string token
042 *  with a GeoJSON string.
043 *  
044 *  @author Daniel Crawl
045 *  @version $Id: VectorToGeoJSONString.java 34349 2015-12-18 01:13:43Z crawl $
046 */
047public class VectorToGeoJSONString extends Transformer {
048
049        public VectorToGeoJSONString(CompositeEntity container, String name)
050                        throws NameDuplicationException, IllegalActionException {
051                super(container, name);
052                input.setTypeEquals(VectorToken.VECTOR);
053                output.setTypeEquals(BaseType.STRING);
054        }
055        
056        @Override
057        public void fire() throws IllegalActionException {
058                super.fire();
059                VectorToken inToken = (VectorToken) input.get(0);
060                output.broadcast(new StringToken(VectorUtilities.toGeoJSONString(
061                        inToken.getVectors())));
062        }
063}