| gvSIG desktop 1

/* 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 es.gva.cit.gazetteer.wfsg.parsers;

import java.util.Vector;

import es.gva.cit.catalog.metadataxml.XMLNode;

import es.gva.cit.catalog.metadataxml.XMLTree;

import es.gva.cit.catalog.querys.Coordinates;

import es.gva.cit.gazetteer.querys.FeatureType;

import es.gva.cit.gazetteer.wfs.drivers.WFSServiceDriver;

/**

 * This class parses a WFs-G getCapabilities file

 * 

 * 

 * @author Jorge Piera Llodra (piera_jor@gva.es)

 */

public class WfsgCapabilitiesParser {

        WFSServiceDriver driver;

        XMLNode rootNode = null;

        /**

         * @param driver 

         */

        public  WfsgCapabilitiesParser(WFSServiceDriver driver) {        

                this.driver = driver;

        } 

        /**

         * @return 

         * @param node 

         */

        public FeatureType[] parse(XMLNode node) {        

                if ((node == null) || !(node.getName().equals("WFS_Capabilities"))){

                        driver.setServerAnswerReady("El servidor no soporta el protocolo " +

                        "especificado");

                        return null;

                }

                setRootNode(node);

                driver.setServerAnswerReady(XMLTree.searchNodeValue(node,

                "Service->Title") + "\n" +

                XMLTree.searchNodeValue(node,"Service->Abstract"));

                FeatureType[] features = parseFeatures();

                parseProjection();

                return features;

        } 

        /**

         * Parses the server projection

         */

        public void parseProjection(){

                driver.setProjection(XMLTree.searchNodeValue(getRootNode(),"FeatureTypeList->FeatureType->SRS"));

        }

        /**

         * It parses the Feature Types

         * 

         */

        public FeatureType[] parseFeatures() {        

                XMLNode[] nodes = XMLTree.searchMultipleNode(getRootNode(),"FeatureTypeList->FeatureType");

                FeatureType[] features = new FeatureType[nodes.length];

                for (int i=0 ; i<features.length ; i++){

                        features[i] = (parseFeature(nodes[i]));

                }

                return features;

        } 

        /**

         * It parses a Feature Node.

         * @return 

         * @param featureNode 

         */

        public FeatureType parseFeature(XMLNode featureNode) {        

                FeatureType f = new FeatureType();

                f.setName(XMLTree.searchNodeValue(featureNode,"Name"));

                f.setTitle(XMLTree.searchNodeValue(featureNode,"Title"));

                if (f.getTitle() == null)

                        f.setTitle(f.getName());

                f.setAbstract(XMLTree.searchNodeValue(featureNode,"Abstract"));

                f.setKeywords(XMLTree.searchNodeValue(featureNode,"Keywords"));

                f.setSrs(XMLTree.searchNodeValue(featureNode,"SRS"));

                f.setCoordinates(new Coordinates(XMLTree.searchNodeAtribute(featureNode,"LatLongBoundingBox","minx"),

                                XMLTree.searchNodeAtribute(featureNode,"LatLongBoundingBox","miny"),

                                XMLTree.searchNodeAtribute(featureNode,"LatLongBoundingBox","maxx"),

                                XMLTree.searchNodeAtribute(featureNode,"LatLongBoundingBox","maxy")));

                return f;

        } 

        /**

         * This function parses the protocols of an operation

         * @return 

         * @param operation Operation to find the supported protocols

         */

        public String[] getOperations(String operation) {        

                XMLNode[] protocols = XMLTree.searchMultipleNode(getRootNode(),"Capability->Request->" + operation + "->DCPType");

                Vector vProtocols = new Vector();

                for (int i=0 ; i<protocols.length ; i++){

                        if (XMLTree.searchNode(protocols[i],"HTTP->Get") != null){

                                vProtocols.add("GET");

                        }

                        if (XMLTree.searchNode(protocols[i],"HTTP->Post") != null){

                                vProtocols.add("POST");

                        }

                }  

                String[] sProtocols = new String[vProtocols.size()];

                for (int i=0 ; i<vProtocols.size() ; i++){

                        sProtocols[i] = (String) vProtocols.get(i);

                }        

                return sProtocols;

        } 

        /**

         * @return Returns the rootNode.

         */

        public XMLNode getRootNode() {        

                return rootNode;

        } 

        /**

         * @param rootNode The rootNode to set.

         */

        public void setRootNode(XMLNode rootNode) {        

                this.rootNode = rootNode;

        } 

}