| gvSIG desktop 1

package es.gva.cit.catalog.csw.drivers;

import java.net.MalformedURLException;

import java.net.URL;

import org.apache.commons.httpclient.NameValuePair;

import es.gva.cit.catalog.csw.drivers.profiles.CSWebRIMProfile;

import es.gva.cit.catalog.csw.parsers.CSWConstants;

import es.gva.cit.catalog.drivers.profiles.IProfile;

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

import es.gva.cit.catalog.protocols.HTTPGetProtocol;

/* 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

 */

/* CVS MESSAGES:

 *

 * $Id$

 * $Log$

 *

 */

/**

 * @author Jorge Piera LLodr? (jorge.piera@iver.es)

 */

public class CSWebRIMCatalogServiceDriver extends CSWCatalogServiceDriver{

        public static String SERVICE_NAME = "CSW/ebRIM";

        /*

         * (non-Javadoc)

         * @see es.gva.cit.catalogClient.drivers.ICatalogServiceDriver#getServiceName()

         */

        public String getServiceName() {

                return SERVICE_NAME;

        }

        /*

         * (non-Javadoc)

         * @see es.gva.cit.catalog.drivers.AbstractCatalogServiceDriver#getProfile()

         */

        public IProfile getProfile() {

                return new CSWebRIMProfile();

        }

        /*

         * (non-Javadoc)

         * @see es.gva.cit.catalog.csw.drivers.CSWCatalogServiceDriver#retrieveResults(es.gva.cit.catalog.metadataxml.XMLNode)

         */

        protected XMLNode[] retrieveResults(XMLNode root) {

                XMLNode resultNode = root.searchNode(CSWConstants.SEARCH_RESULTS);

                if (resultNode == null){

                        return new XMLNode[0];

                }

                XMLNode[] results = new XMLNode[resultNode.getNumSubNodes()];

                for (int i=0 ; i<resultNode.getNumSubNodes() ; i++){

                        results[i] = resultNode.getSubNode(i);

                }

                return getEbRIMNodes(results);

        }

        /**

         * This function retrieve the nodes for one ebRIM answer

         * @return Medatada Nodes.

         * @param nodes Server URL

         * @param url 

         */

        private XMLNode[] getEbRIMNodes(XMLNode[] nodes) {        

                //if the getExtrinsincContentOperation is not supported

                if (capabilities.getOperations().getGetExtrinsicContent().size() == 0){

                        return nodes;

                }

                XMLNode[] auxNodes = new XMLNode[nodes.length];

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

                        String id = nodes[i].searchAtribute(CSWConstants.ID);

                        String sUrl = nodes[i].searchAtribute(CSWConstants.HOME);

                        URL url;

                        try {

                                url = new URL(sUrl);

                                auxNodes[i] = (XMLNode)new HTTPGetProtocol().doQuery(url,

                                                getEbRIMRequestParameters(id), 0).toArray()[0];

                        } catch (MalformedURLException e) {

                                //Impossible to retrieve the record

                        }                        

                }

                return auxNodes;

        } 

        /**

         * It Returns the parameters needed by getExtrinsicContent

         * @return 

         * @param id Record id

         */

        private NameValuePair[] getEbRIMRequestParameters(String id) {        

                NameValuePair nvp1 = new NameValuePair(CSWConstants.REQUEST, CSWConstants.EXTRISIC_CONTENT);

                NameValuePair nvp2 = new NameValuePair(CSWConstants.ID, id);

                return new NameValuePair[] { nvp1, nvp2 };

        } 

}