gvSIG tools: Gazetteer

package org.gvsig.gazetteer.wfs.drivers;

import java.awt.geom.Point2D;

import java.util.ArrayList;

import org.gvsig.fmap.geom.primitive.Point;

import org.gvsig.gazetteer.querys.Feature;

import org.gvsig.gpe.lib.impl.parser.GPEContentHandler;

/* 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:

 *

 * $Id$

 * $Log$

 *

 */

/**

 * ContentHandler for the WFS

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

 */

public class WFSGPEContentHandler extends GPEContentHandler{

        private ArrayList features  = null;

        private String searchField = null;

        public WFSGPEContentHandler(String searchField) {

                super();

                this.searchField = searchField;

                features = new ArrayList();

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#addElementToFeature(java.lang.Object, java.lang.Object)

         */

        public void addElementToFeature(Object element, Object feature) {

                if ((element != null) && (((Element)element).getName().equals(searchField))){

                        ((Feature)feature).setName(String.valueOf(((Element)element).getValue()));

                        ((Feature)feature).setDescription(String.valueOf(((Element)element).getValue()));

                }

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#addGeometryToFeature(java.lang.Object, java.lang.Object)

         */

        public void addGeometryToFeature(Object geometry, Object feature) {

                ((Feature)feature).setCoordinates((Point)geometry);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#endFeature(java.lang.Object)

         */

        public void endFeature(Object feature) {

                features.add(feature);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#startElement(java.lang.String, java.lang.Object, java.lang.String, java.lang.Object)

         */

        public Object startElement(String name, Object value, String xsElementName,

                        Object parentElement) {

                return new Element(name, value);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#startFeature(java.lang.String, java.lang.String, java.lang.String, java.lang.Object)

         */

        public Object startFeature(String id, String name, String xsElementName,

                        Object layer) {

                return new Feature(id, name, name, null);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#startPoint(java.lang.String, double, double, double, java.lang.String)

         */

        public Object startPoint(String id, double x, double y, double z, String srs) {

                return new Point2D.Double(x, y);

        }

        /* (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#startLineString(java.lang.String, double[], double[], double[], java.lang.String)

         */

        public Object startLineString(String id, double[] x, double[] y,

                        double[] z, String srs) {

                return getPoint(x, y);

        }

        /* (non-Javadoc)

         * @see org.gvsig.gpe.GPEContentHandler#startPolygon(java.lang.String, double[], double[], double[], java.lang.String)

         */

        public Object startPolygon(String id, double[] x, double[] y, double[] z,

                        String srs) {

                return getPoint(x, y);

        }

        private Point2D getPoint(double[] x, double y[]) {

                double xs = 0.0;

                double ys = 0.0;

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

                        xs = xs + x[i];

                        ys = ys + y[i];

                }

                if (x.length == 0){

                        return new Point2D.Double(xs,ys);

                }else{

                        return new Point2D.Double(xs/x.length,ys/x.length);

                }

        }

        /**

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

         */

        private class Element{

                private String name = null;

                private Object value = null;

                public Element(String name, Object value) {

                        super();

                        this.name = name;

                        this.value = value;

                }

                /**

                 * @return the name

                 */

                public String getName() {

                        return name;

                }

                /**

                 * @param name the name to set

                 */

                public void setName(String name) {

                        this.name = name;

                }

                /**

                 * @return the value

                 */

                public Object getValue() {

                        return value;

                }

                /**

                 * @param value the value to set

                 */

                public void setValue(Object value) {

                        this.value = value;

                }

        }

        /**

         * @return the features

         */

        public ArrayList getFeatures() {

                return features;

        }

}