Application: gvSIG desktop

/* 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.sldsupport.handler;

import java.io.File;

import java.io.FileReader;

import java.io.IOException;

import java.util.ArrayList;

import org.gvsig.sldsupport.exception.SLDReadException;

import org.gvsig.sldsupport.layer.ISLDLayer;

import org.gvsig.sldsupport.util.SLDTags;

import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;

/**

 * Implements the main class for the SLD implementation specification (version 1.0.0)

 * which starts the parsing of the styled layer descriptor document in order to store

 * all the information that it has inside and transform it into objects.<p>

 * 

 * An SLD document is defined as a sequence of styled layers.<p>

 * The version attribute gives the SLD version an SLD document, to facilitate backward

 * compatibility with static documents stored in various different versions of an SLD

 * spec.<p>

 * 

 * The Styled layers can correspond to either named layers or user-defined layers,

 * which are described in subsequent sections. There may be any number of either type

 * of styled layer, including zero, mixed in any order.

 * 

 * @see http://portal.opengeospatial.org/files/?artifact_id=1188

 * 

 * @author pepe vidal salvador - jose.vidal.salvador@iver.es

 */

public abstract class SLDProtocolHandler {

        protected String name;

        private String version;

        protected ArrayList<ISLDLayer> layers = new ArrayList<ISLDLayer>(); ; 

        public abstract void parse(File f)

                        throws IOException, XmlPullParserException, SLDReadException;

        public String detectVersion(File f)

                        throws XmlPullParserException, IOException, SLDReadException {

                int tag;

                XmlPullParser parser = null;

                // xmlSchemaParser = new XMLSchemaParser();

                FileReader fr = new FileReader(f);

                parser.setInput(fr);

                parser.nextTag();

                if ( parser.getEventType() != XmlPullParser.END_DOCUMENT ) {

                        String value = parser.getAttributeValue("",SLDTags.VERSION_ATTR);

                        fr.close();

                        return value;

                } 

                fr.close();

                throw new SLDReadException(new Exception("Unable to get SLD version" +

                                " in file: " + f.getAbsolutePath()));

        }

        public ArrayList<ISLDLayer> getLayers() {

                return layers;

        }

        public void setLayers(ArrayList<ISLDLayer> layers) {

                this.layers = layers;

        }

        public String getName() {

                return name;

        }

        public void setName(String name) {

                this.name = name;

        }

        public String getVersion() {

                return version;

        }

        public void setVersion(String version) {

                this.version = version;

        }

}