org.osmsurround.ra.export.GpxExport.java Source code

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Here is the source code for org.osmsurround.ra.export.GpxExport.java

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/**
 * This file is part of Relation Analyzer for OSM.
 * Copyright (c) 2001 by Adrian Stabiszewski, as@grundid.de
 *
 * Relation Analyzer 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.
 *
 * Relation Analyzer 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 Relation Analyzer.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.osmsurround.ra.export;

import java.io.OutputStream;
import java.math.BigDecimal;
import java.util.List;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;

import org.osmtools.api.LonLat;
import org.osmtools.api.Section;
import org.osmtools.ra.AnalyzerException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import com.topografix.gpx._1._1.GpxType;
import com.topografix.gpx._1._1.ObjectFactory;
import com.topografix.gpx._1._1.TrkType;
import com.topografix.gpx._1._1.TrksegType;
import com.topografix.gpx._1._1.WptType;

@Service
public class GpxExport {

    private String appName = "relation-analyzer";
    private String appVersion = "1.1";
    private ObjectFactory of = new ObjectFactory();

    @Autowired
    public GpxExport(@Value("${app.name}") String appName) {
        this.appName = appName;
    }

    public void export(Iterable<Section> container, OutputStream os) {
        GpxType gpxType = of.createGpxType();
        gpxType.setCreator(appName);
        gpxType.setVersion(appVersion);
        for (Section dataContainer : container) {
            TrkType trkType = of.createTrkType();
            gpxType.getTrk().add(trkType);
            trkType.setName(dataContainer.getName());

            for (Iterable<? extends LonLat> coordinates : dataContainer.getCoordinateLists()) {
                TrksegType trksegType = of.createTrksegType();
                trkType.getTrkseg().add(trksegType);

                List<WptType> trkpt = trksegType.getTrkpt();
                addTrackpoints(trkpt, coordinates);
            }
        }
        marshalData(gpxType, os);
    }

    private void addTrackpoints(List<WptType> trkpt, Iterable<? extends LonLat> coordinates) {
        for (LonLat point : coordinates) {
            WptType wptType = of.createWptType();
            wptType.setLat(new BigDecimal(point.getLat()));
            wptType.setLon(new BigDecimal(point.getLon()));
            trkpt.add(wptType);
        }
    }

    private void marshalData(GpxType gpxType, OutputStream os) {
        try {
            JAXBContext jaxbContext = JAXBContext.newInstance(GpxType.class);
            Marshaller marshaller = jaxbContext.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
            marshaller.marshal(of.createGpx(gpxType), os);
        } catch (JAXBException e) {
            throw new AnalyzerException(e);
        }
    }

}