Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

*

* 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., 51 Franklin Street, Fifth Floor, Boston,

* MA  02110-1301, USA.

*

*/

package org.gvsig.raster.wmts.ogc.impl.wmts_1_0_0;

import java.io.File;

import java.io.IOException;

import org.gvsig.raster.wmts.ogc.impl.EncodingXMLParser;

import org.gvsig.raster.wmts.ogc.impl.Tags;

import org.gvsig.raster.wmts.ogc.impl.base.WMTSProtocolHandler;

import org.gvsig.raster.wmts.ogc.impl.base.WMTSServerDescription;

import org.gvsig.raster.wmts.ogc.impl.base.WMTSServiceInformation;

import org.gvsig.raster.wmts.ogc.impl.base.WMTSStatusImpl;

import org.gvsig.raster.wmts.ogc.impl.request.WMTSGetCapabilitiesRequest;

import org.gvsig.raster.wmts.ogc.impl.request.WMTSGetFeatureInfoRequest;

import org.gvsig.raster.wmts.ogc.impl.request.WMTSGetTileRequest;

import org.gvsig.raster.wmts.ogc.impl.struct.WMTSLayerImpl;

import org.gvsig.raster.wmts.ogc.impl.struct.WMTSTileMatrixSetImpl;

import org.gvsig.raster.wmts.ogc.impl.wmts_1_0_0.request.WMTSGetCapabilitiesRequest1_0_0;

import org.gvsig.raster.wmts.ogc.impl.wmts_1_0_0.request.WMTSGetFeatureInfoRequest1_0_0;

import org.gvsig.raster.wmts.ogc.impl.wmts_1_0_0.request.WMTSGetTileRequest1_0_0;

import org.kxml2.io.KXmlParser;

import org.xmlpull.v1.XmlPullParserException;

/**

 * Describes the handler to comunicate to a WMTS 1.0.0

 *

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class WMTSProtocolHandler1_0_0 extends WMTSProtocolHandler {

        private String                    gmlTag             = Tags.WMTS_GMLTAG;

        private WMTSServerDescription     serverDescription  = null;

        public WMTSProtocolHandler1_0_0() {

                this.version = "1.0.0";

                this.name = "WMS1.0.0";

                this.serviceInfo = new WMTSServiceInformation(); 

        }

        /**

         * Sets the status object

         */

        public void setServerDescription(WMTSServerDescription serverDescription) {

                this.serverDescription = serverDescription;

        }

        public boolean parseCapabilities(File f) {       

            int tag;

            EncodingXMLParser parser = null;

            parser = new EncodingXMLParser();

            if(serverDescription != null)

                    serverDescription.clear();

            try {

                    parser.setInput(f);

                    parser.nextTag();

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

                            parser.require(KXmlParser.START_TAG, null, Tags.WMTS_CAPABILITIES);                            

                            tag = parser.nextTag();

                                 while(tag != KXmlParser.END_DOCUMENT) {

                     switch(tag) {

                                                case KXmlParser.START_TAG:

                                                        if (compareName(parser, Tags.WMTS_SERVICEID)) {

                                                                serverDescription.getServiceIdentification().parse(parser);

                                                        } else if (compareName(parser, Tags.WMTS_SERVICEPROV )) {

                                                                serverDescription.getServiceProvider().parse(parser);

                                                        } else if (compareName(parser, Tags.WMTS_OPMETADATA)) {

                                                                parser.skipSubTree();

                                                        } else if (compareName(parser, Tags.WMTS_CONTENTS )) {

                                                                parseServiceContent(parser, serverDescription);

                                                        } else if (compareName(parser, Tags.WMTS_THEMES )) {

                                                                serverDescription.getThemes().parse(parser);

                                                        }

                                                        break;

                                                case KXmlParser.END_TAG:                                                        

                                                        break;

                                                case KXmlParser.TEXT:

                                                break;

                                         }

                                     tag = parser.next();

                             }

                            parser.require(KXmlParser.END_DOCUMENT, null, null);

                    }

            } catch(XmlPullParserException parser_ex) {

                    parser_ex.printStackTrace();

                    return false;

            } catch (IOException ioe) {                        

                           ioe.printStackTrace();

                           return false;

                } 

            //Calcula las referencias a las capas dentro de los temas

            serverDescription.getThemes().calculateLayers(serverDescription.getLayerList());

            //Si no hay temas definidos se calcula un tema por capa en forma de lista

            serverDescription.getThemes().loadThemesWithLayerInfo(serverDescription.getLayerList(), serverDescription);

            //Asocia los TileMatrixSet a los TileMatrixLimits

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

                        WMTSLayerImpl layer = (WMTSLayerImpl)serverDescription.getLayerList().get(i);

                        layer.linkTileMatrixSets(serverDescription.getTileMatrixSet());

                }

        return true;

    } 

    /**

     * Parses the Content section    

     * @param parser

     * @throws IOException

     * @throws XmlPullParserException

     */

    private void parseServiceContent(KXmlParser parser, WMTSServerDescription content) throws IOException, XmlPullParserException {

            int currentTag;

            boolean end = false;

            currentTag = parser.next();

            while (!end) {

                         switch(currentTag) {

                                case KXmlParser.START_TAG:

                                        if (compareName(parser, Tags.WMTS_LAYER)) {

                                                WMTSLayerImpl layer = content.buildNewLayer();

                                                layer.setForceLongitudeFirstAxisOrder(forceLongitudeFirstAxisOrder);

                                                layer.parse(parser);

                                        } else if (compareName(parser, Tags.WMTS_OTHERSRC)) {

                                                parseOtherSource(parser); 

                                        } else if (compareName(parser, Tags.WMTS_TILEMATRIXSET)) {

                                                WMTSTileMatrixSetImpl mSet = (WMTSTileMatrixSetImpl)content.createVersionObject("WMTSTileMatrixSet");

                                                mSet.setForceLongitudeFirstAxisOrder(forceLongitudeFirstAxisOrder);

                                                mSet.parse(parser, content.getTileMatrixSet()); 

                                        }                        

                                        break;

                                case KXmlParser.END_TAG:

                                        if (compareName(parser, Tags.WMTS_CONTENTS))

                                                end = true;

                                        break;

                                case KXmlParser.TEXT:                                        

                                break;

                         }

             if (!end)

                 currentTag = parser.next();

            }

    }

    private void parseOtherSource(KXmlParser parser) throws IOException, XmlPullParserException {

            parser.skipSubTree();

    }

    /**

     * Compares the next name in the selected parser with the string passed

     * by value.

     * @param parser

     * @param name

     * @return

     */

    private boolean compareName(KXmlParser parser, String name) {

            String s = parser.getName();

            if(s.compareTo(name) == 0 || s.compareTo(gmlTag + name) == 0)

                    return true;

            return false;

    }

    /*

     * (non-Javadoc)

     * @see org.gvsig.remoteclient.wmts.WMTSProtocolHandler#createGetCapabilitiesRequest(org.gvsig.remoteclient.wms.WMSStatus)

     */

        protected WMTSGetCapabilitiesRequest createGetCapabilitiesRequest() {

                return new WMTSGetCapabilitiesRequest1_0_0(serverDescription, this);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.remoteclient.wmts.WMTSProtocolHandler#createGetTileRequest()

         */

        protected WMTSGetTileRequest createGetTileRequest(WMTSStatusImpl status) {

                return new WMTSGetTileRequest1_0_0(status, this);

        }

        /*

         * (non-Javadoc)

         * @see org.gvsig.remoteclient.wmts.WMTSProtocolHandler#createGetFeatureInfoRequest(org.gvsig.remoteclient.wmts.WMTSStatus, int, int)

         */

        protected WMTSGetFeatureInfoRequest createGetFeatureInfoRequest(WMTSStatusImpl status, int x, int y) {

                return new WMTSGetFeatureInfoRequest1_0_0(status, this, x, y);

        }

}