gvSIG tools: Gazetteer

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * 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 2

 * 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, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.gazetteer.adl.drivers;

import java.net.MalformedURLException;

import java.net.URI;

import java.net.URL;

import java.util.Collection;

import org.gvsig.catalog.drivers.DiscoveryServiceCapabilities;

import org.gvsig.catalog.metadataxml.XMLNode;

import org.gvsig.catalog.protocols.HTTPPostProtocol;

import org.gvsig.gazetteer.adl.filters.ADLFilter;

import org.gvsig.gazetteer.adl.parsers.AdlCapabilitiesParser;

import org.gvsig.gazetteer.adl.parsers.AdlFeatureParser;

import org.gvsig.gazetteer.drivers.AbstractGazetteerServiceDriver;

import org.gvsig.gazetteer.drivers.GazetteerCapabilities;

import org.gvsig.gazetteer.drivers.IGazetteerServiceDriver;

import org.gvsig.gazetteer.querys.Feature;

import org.gvsig.gazetteer.querys.GazetteerQuery;

import org.gvsig.utils.swing.jcomboServer.ServerData;

/**

 * This class implements the driver to connect with a

 * ADL gazetteer service

 * @author Jorge Piera Llodr? (piera_jor@gva.es)

 * @see http://alexandria.sdc.ucsb.edu/

 */

public class ADLGazetteerServiceDriver extends AbstractGazetteerServiceDriver implements IGazetteerServiceDriver {

        /*

         * (non-Javadoc)

         * @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getCapabilities(java.net.URI)

         */

        public DiscoveryServiceCapabilities getCapabilities(URI uri) {

                GazetteerCapabilities capabilities = new GazetteerCapabilities();

                Collection nodes = new java.util.ArrayList();

                URL url = null;

                        try {

                                url = uri.toURL();

                        } catch (MalformedURLException e) {

                                capabilities.setServerMessage("errorServerNotFound");

                                capabilities.setAvailable(false);

                                return capabilities;

                        }

                try {

                        nodes = new HTTPPostProtocol().doQuery(uri.toURL(),

                                        getPOSTMessageCapabilities(), 0);

                } catch (MalformedURLException e) {

                        capabilities.setServerMessage(e.getMessage());

                        capabilities.setAvailable(false);

                        return capabilities;

                }

                AdlCapabilitiesParser parser = new AdlCapabilitiesParser(this, capabilities);

                parser.parse(nodes);

                return capabilities;

        }

        /**

         * It creates the XML for the getCapabilities request

         * @return Name-value pair with a XML request

         */

        private String getPOSTMessageCapabilities() {

                return "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" +

                "<gazetteer-service " +

                "xmlns=\"http://www.alexandria.ucsb.edu/gazetteer\" " +

                "version=\"1.2\">" +

                "<get-capabilities-request/>" +

                "</gazetteer-service>";

        }

        /*

         * (non-Javadoc)

         * @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getFeature(java.net.URI, es.gva.cit.gazetteer.querys.Query)

         */

        public Feature[] getFeature(URI uri, GazetteerQuery query) {

                Collection nodes = new java.util.ArrayList();

                setQuery(query);

                URL url = null;

                try {

                        url = uri.toURL();

                } catch (MalformedURLException e) {

                        setServerAnswerReady("errorServerNotFound");

                        return null;

                }

                System.out.println("**************POST*************");

                System.out.println(getPOSTGetFeature(getQuery(),true));

                nodes = new HTTPPostProtocol().doQuery(url,

                                getPOSTGetFeature(getQuery(),true), 0);

                if (nodes == null){

                        System.out.println(getPOSTGetFeature(getQuery(),false));

                        nodes = new HTTPPostProtocol().doQuery(url,

                                        getPOSTGetFeature(getQuery(),false), 0);

                }

                if ((nodes != null) && (nodes.size() == 1)){

                        return AdlFeatureParser.parse((XMLNode)nodes.toArray()[0]);

                }else{

                        return null;

                }

        }

        /**

         * It creates the XML for the getFeature request

         * @return Name-value pair with a XML request

         * @param query

         */

        private String getPOSTGetFeature(GazetteerQuery query,boolean withAccents) {

                return  "<gazetteer-service " +

                "xmlns=\"http://www.alexandria.ucsb.edu/gazetteer\" " +

                "xmlns:gml=\"http://www.opengis.net/gml\" " +

                "version=\"1.2\">" +

                new ADLFilter(withAccents).getQuery(query) +

                "</gazetteer-service>" ;

        }

        /*

         * (non-Javadoc)

         * @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#isProtocolSupported(java.net.URI)

         */

        public boolean isProtocolSupported(URI uri) {

                // TODO Auto-generated method stub

                return true;

        }

        /*

         * (non-Javadoc)

         * @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getDefaultPort()

         */

        public int getDefaultPort() {

                return 80;

        }

        /*

         * (non-Javadoc)

         * @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getDefaultSchema()

         */

        public String getDefaultSchema() {

                return "http";

        }

        /*

         * (non-Javadoc)

         * @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getServiceName()

         */

        public String getServiceName() {

                return ServerData.SERVER_SUBTYPE_GAZETTEER_ADL;

        }

}