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*

* 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

*/

import es.gva.cit.catalogClient.metadataXML.XMLNode;

import es.gva.cit.catalogClient.metadataXML.XMLTree;

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

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

import java.util.Vector;

 * 

 * 

/**

 * 

 * 

 */

    private URL url;

/**

 * 

 * 

 */

    private Vector features;

/**

 * 

 * 

 * 

 * @param url 

 */

    public  ADLThesaurus(URL url) {        

        setUrl(url);

        getNarrower();

    } 

/**

 * It implements the getNarrower ADL thesaurus operation

 * 

 */

    private void getNarrower() {        

        URL urlNarrower;

        try {

            urlNarrower = new URL ("http", getUrl().getHost(), getUrl().getPort(),getUrl().getFile() + "/get-narrower");

        } catch (MalformedURLException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

            return;

        }

        Collection nodes = new HTTPGetProtocol().doQuery(urlNarrower, getNarrowerParams(), 0);

        parseGetNarrowAnswer((XMLNode)nodes.toArray()[0]);

    } 

/**

 * It returns the name-value pair for the getNarrower opertaion

 * 

 * 

 * @return Name-value pair

 */

    private NameValuePair[] getNarrowerParams() {        

        String message = "";

        System.out.println(message);

        NameValuePair nvp1 = new NameValuePair("starting-term", "");

        NameValuePair nvp2 = new NameValuePair("max-levels", "-1");

        NameValuePair nvp3 = new NameValuePair("format", "term");

        return new NameValuePair[] { nvp1, nvp2, nvp3 };

    } 

/**

 * It parses the getNarrow answer into a Feature arrray

 * 

 * 

 * @param node 

 */

    private void parseGetNarrowAnswer(XMLNode node) {        

        XMLNode[] rootNodes = XMLTree.searchMultipleNode(node,"hierarchy->node->node");

        Vector features = new Vector();

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

           ThesaurusName thesaurus = new ThesaurusName(XMLTree.searchNodeValue(rootNodes[i],"term"));

           thesaurus.setFeatures(parseRecursiveFeatures(rootNodes[i],thesaurus));

           thesaurus.setTitle(thesaurus.getName());

            features.add(thesaurus);

        }

        setFeatures(features);

    } 

/**

 * It is used to parse a feature using recursivity.

 * 

 * 

 * @return 

 * @param node Feature tree

 * @param thesaurus Feature to add the child Features

 */

    private Vector parseRecursiveFeatures(XMLNode node, ThesaurusName thesaurus) {        

        XMLNode[] rootNodes = XMLTree.searchMultipleNode(node,"node");

        if ((rootNodes == null) || (rootNodes.length == 0)){

                return null;

        }

        Vector vFeatures = new Vector();

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

            ThesaurusName f = new ThesaurusName(XMLTree.searchNodeValue(rootNodes[i],"term"));

            f.setTitle(f.getName());

            f.setFeatures(parseRecursiveFeatures(rootNodes[i],f));

            vFeatures.add(f);

        }        

        return vFeatures;

    } 

/**

 * 

 * 

 * 

 * @return Returns the url.

 */

    public URL getUrl() {        

        return url;

    } 

/**

 * 

 * 

 * 

 * @param url The url to set.

 */

    public void setUrl(URL url) {        

        this.url = url;

    } 

/**

 * 

 * 

 * 

 * @return Returns the features.

 */

    public Vector getFeatures() {        

        return features;

    } 

/**

 * 

 * 

 * 

 * @param features The features to set.

 */

    public void setFeatures(Vector features) {        

        this.features = features;

    } 

 }