GoogleGeocodingService.java

/**
 * geo-platform
 * Rich webgis framework
 * http://geo-platform.org
 * ====================================================================
 * <p>
 * Copyright (C) 2008-2017 geoSDI Group (CNR IMAA - Potenza - ITALY).
 * <p>
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU 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 General Public License
 * for more details. You should have received a copy of the GNU General
 * Public License along with this program. If not, see http://www.gnu.org/licenses/
 * <p>
 * ====================================================================
 * <p>
 * Linking this library statically or dynamically with other modules is
 * making a combined work based on this library. Thus, the terms and
 * conditions of the GNU General Public License cover the whole combination.
 * <p>
 * As a special exception, the copyright holders of this library give you permission
 * to link this library with independent modules to produce an executable, regardless
 * of the license terms of these independent modules, and to copy and distribute
 * the resulting executable under terms of your choice, provided that you also meet,
 * for each linked independent module, the terms and conditions of the license of
 * that module. An independent module is a module which is not derived from or
 * based on this library. If you modify this library, you may extend this exception
 * to your version of the library, but you are not obligated to do so. If you do not
 * wish to do so, delete this exception statement from your version.
 */
package org.geosdi.geoplatform.gui.server.service.impl.google;

import org.geosdi.geoplatform.gui.client.model.GeocodingBean;
import org.geosdi.geoplatform.gui.client.model.google.GoogleGeocodeBean;
import org.geosdi.geoplatform.gui.oxm.model.google.GPGoogleGeocodeRoot;
import org.geosdi.geoplatform.gui.oxm.model.google.GPGoogleResult;
import org.geosdi.geoplatform.gui.oxm.model.google.enums.ResponseStatus;
import org.geosdi.geoplatform.gui.server.service.IGeocodingService;
import org.geosdi.geoplatform.oxm.jaxb.GPJaxbMarshaller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;

/**
 * @author Giuseppe La Scaleia - CNR IMAA geoSDI Group
 * @email giuseppe.lascaleia@geosdi.org
 */
@Component("googleGeocodingService")
public class GoogleGeocodingService implements IGeocodingService {

    // URL prefix to the geocoder
    private static final String GEOCODER_REQUEST_PREFIX_FOR_XML = "http://maps.google.com/maps/api/geocode/xml";
    //
    private static final Logger logger = LoggerFactory.getLogger(GoogleGeocodingService.class);
    //
    @Autowired
    private GPJaxbMarshaller geocoderGoogleJaxbMarshaller;

    /**
     * (non-Javadoc)
     *
     * @see org.geosdi.geoplatform.gui.server.service.IGeocodingService#findLocations(java.lang.String)
     */
    @Override
    public ArrayList<GeocodingBean> findLocations(String address) throws IOException {
        ArrayList<GeocodingBean> beans = new ArrayList<>();

        logger.debug("@@@@@@@@@@@@@@@@@@@@Process Request for {}\n", GEOCODER_REQUEST_PREFIX_FOR_XML);

        URL url = new URL(GEOCODER_REQUEST_PREFIX_FOR_XML + "?address="
                + URLEncoder.encode(address, "UTF-8") + "&language=it&sensor=false");

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();

        GPGoogleGeocodeRoot oxmBean = (GPGoogleGeocodeRoot) this.geocoderGoogleJaxbMarshaller.
                unmarshal(conn.getInputStream());

        if (oxmBean.getStatus().equals(
                ResponseStatus.EnumResponseStatus.STATUS_OK.getValue())) {
            for (GPGoogleResult result : oxmBean.getResultList()) {
                beans.add(new GoogleGeocodeBean(result));
            }
        }
        logger.debug("\n\n@@@@@@@@@@@@@@@@@@@@@Found : {}", beans);
        return beans;
    }
}