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.

*

*/

/*

* AUTHORS (In addition to CIT):

* 2009 IVER T.I   {{Task}}

*/

package org.gvsig.raster.wmts.io;

import java.io.IOException;

import java.io.InputStream;

import java.net.MalformedURLException;

import java.net.URI;

import java.net.URISyntaxException;

import java.net.URL;

import java.net.URLConnection;

import java.util.List;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.compat.net.ICancellable;

import org.gvsig.fmap.dal.DALLocator;

import org.gvsig.fmap.dal.DataManager;

import org.gvsig.fmap.dal.DataServerExplorerParameters;

import org.gvsig.fmap.dal.DataStoreParameters;

import org.gvsig.fmap.dal.NewDataStoreParameters;

import org.gvsig.fmap.dal.coverage.exception.ConnectException;

import org.gvsig.fmap.dal.coverage.store.RasterDataServerExplorer;

import org.gvsig.fmap.dal.coverage.store.parameter.TileDataParameters;

import org.gvsig.fmap.dal.exception.DataException;

import org.gvsig.fmap.dal.exception.InitializeException;

import org.gvsig.fmap.dal.exception.ProviderNotRegisteredException;

import org.gvsig.fmap.dal.spi.DataServerExplorerProvider;

import org.gvsig.fmap.dal.spi.DataServerExplorerProviderServices;

import org.gvsig.raster.wmts.ogc.WMTSClient;

import org.gvsig.raster.wmts.ogc.WMTSOGCLocator;

/**

 * Explorer for a WMTS server

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

 */

public class WMTSServerExplorer implements RasterDataServerExplorer, DataServerExplorerProvider {

        public static final String           NAME                     = WMTSProvider.NAME;

        private WMTSClient                   ogcClient                = null;

        private WMTSServerExplorerParameters parameters               = null;

        private static final Logger         logger                    = LoggerFactory.getLogger(WMTSServerExplorer.class);

        public WMTSServerExplorer(

                        WMTSServerExplorerParameters parameters,

                        DataServerExplorerProviderServices services)

                        throws InitializeException {

                this.parameters = parameters;

        }

        public String getDataStoreProviderName() {

                return WMTSProvider.NAME;

        }

        public String getDescription() {

                return WMTSProvider.DESCRIPTION;

        }

        public boolean add(String provider, NewDataStoreParameters parameters,

                        boolean overwrite) throws DataException {

                return false;

        }

        public boolean canAdd() {

                return false;

        }

        public boolean canAdd(String storeName) throws DataException {

                return false;

        }

        public NewDataStoreParameters getAddParameters(String storeName)

                        throws DataException {

                return null;

        }

        public List<?> getDataStoreProviderNames() {

                return null;

        }

        public DataServerExplorerParameters getParameters() {

                return parameters;

        }

        public List<?> list() throws DataException {

                return null;

        }

        public List<?> list(int mode) throws DataException {

                return null;

        }

        public void remove(DataStoreParameters parameters) throws DataException {

        }

        public void dispose() {

        }

        public String getProviderName() {

                return WMTSProvider.NAME;

        }

        //**********************************************

        //Connector

        //**********************************************

        public DataStoreParameters getStoredParameters() {

                DataManager manager = DALLocator.getDataManager();

                WMTSDataParameters wmtsParams = null;

                try {

                        wmtsParams = (WMTSDataParameters) manager.createStoreParameters(this.getDataStoreProviderName());

                        String host = parameters.getHost();

            try {

                wmtsParams.setURI(new URI(host));

            } catch (URISyntaxException e) {

                logger.warn("Can't create URI from "+host, e);

            }

                        wmtsParams.setOGCClient(getOGCClient());

                        if(WMTSProvider.TILED) {

                                TileDataParameters tileParams = (TileDataParameters) manager.createStoreParameters("Tile Store");

                                tileParams.setDataParameters(wmtsParams);

                                return tileParams;

                        }

                } catch (InitializeException e) {

            logger.warn("Can't get DataStoreParameters from WMTSServerExplorer", e);

                } catch (ProviderNotRegisteredException e) {

            logger.warn("Can't get DataStoreParameters from WMTSServerExplorer", e);

                }

                return wmtsParams;

        }

        public void connect(ICancellable cancellable) throws ConnectException {

                URL url = null;

                boolean override = false;

                try {

                        url = new URL(parameters.getHost());

                } catch (Exception e) {

                        throw new ConnectException("Malformed URL",e);

                }

        try {

                ogcClient = WMTSOGCLocator.getManager().createWMTSClient(url.toString());

                ogcClient.setForceChangeAxisOrder(parameters.isLongitudeFirst());

                if (!ogcClient.connect(override, cancellable))

                        throw new ConnectException("Error connecting");

        } catch (IOException e) {

                        throw new ConnectException(e.getMessage(), e);

                }

        }

        public boolean isHostReachable(int timeout) {

                URL url = null;

                URLConnection con = null;

                try {

                        url = new URL(parameters.getHost());

                        con = url.openConnection();

                        if(con == null)

                                return false;

                        con.connect();

                } catch (MalformedURLException e) {

                        return false;

                } catch (IOException e) {

                        return false;

                }

                InputStream stream = null;

                try {

                        stream = con.getInputStream();

                        if(stream == null)

                                return false;

                } catch (IOException e) {

                }

                return true;

        }

        /**

         * Checks if the network and host are reachable

         * @return true if both are reachable and false if they are not

         */

        public boolean isHostReachable() {

                return isHostReachable(RasterDataServerExplorer.TIME);

        }

        public boolean isConnected() {

                if(ogcClient != null)

                        return true;

                return false;

        }

        public WMTSClient getOGCClient() {

                return ogcClient;

        }

        public String getHost() {

                return parameters.getHost();

        }

        public DataServerExplorerProviderServices getServerExplorerProviderServices() {

                return null;

        }

}