| gvSIG desktop 1

/* 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.fmap.dal.serverexplorer.wfs;

import java.io.IOException;

import java.net.ConnectException;

import java.util.ArrayList;

import java.util.Hashtable;

import java.util.Iterator;

import java.util.List;

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.exception.DataException;

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

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

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

import org.gvsig.fmap.dal.store.wfs.WFSStoreParameters;

import org.gvsig.fmap.dal.store.wfs.WFSStoreProvider;

import org.gvsig.remoteclient.wfs.WFSClient;

import org.gvsig.remoteclient.wfs.WFSFeature;

import org.gvsig.remoteclient.wfs.WFSStatus;

import org.gvsig.remoteclient.wfs.exceptions.WFSException;

import org.gvsig.remoteclient.wms.ICancellable;

import org.gvsig.tools.dispose.impl.AbstractDisposable;

import org.gvsig.tools.exception.BaseException;

/**

 * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>

 */

public class WFSServerExplorer extends AbstractDisposable implements

                DataServerExplorerProvider {

        public static final String NAME = "WFSServerExplorer";

        private WFSServerExplorerParameters parameters = null;

        private DataManager dataManager = DALLocator.getDataManager();

        private String url = null;

        //WFS Parameters

        private WFSStatus status = null;

        private WFSClient wfsClient = null;

        /**

         * @param parameters

         */

        public WFSServerExplorer(WFSServerExplorerParameters parameters, DataServerExplorerProviderServices services) throws InitializeException{

                super();

                this.parameters = parameters;

                this.url = parameters.getUrl();

                if (wfsClient == null){

                        try {

                                wfsClient = new WFSClient(url);

                                if (status == null){

                                        status = new WFSStatus(null);                                        

                                }

                                wfsClient.getCapabilities(status, false, null);

                        } catch (ConnectException e) {

                                throw new InitializeException("Not possible to connect with " + url, e);

                        } catch (IOException e) {

                                throw new InitializeException("Not possible to connect with " + url, e);

                        } catch (WFSException e) {

                                throw new InitializeException("Not possible to connect with " + url, e);

                        }

                }

        }

        /**

         * Returns all the feature information retrieved using a

         * describeFeatureTypeOpearion

         * @param layerName

         * Feature name

         * @return

         * @throws WFSException 

         */

        public WFSFeature getFeatureInfo(String nameSpace, String layerName) throws WFSException{

                describeFeatureType(layerName, nameSpace, null);

                return (WFSFeature) wfsClient.getFeatures().get(layerName);                        

        }

        private void describeFeatureType(String featureType, String nameSpace, ICancellable cancel) throws WFSException {

                status = new WFSStatus(featureType, nameSpace);

                wfsClient.describeFeatureType(status, false, cancel);

        }

        /**

         * Returns an array of WFSLayerNode's with the descriptors of

         * all features (retrieved using the getCapabilities operation)

         * @return WFSLayerNode[]

         */

        public Hashtable getFeatures(){

                return wfsClient.getFeatures();

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#add(org.gvsig.fmap.dal.NewDataStoreParameters, boolean)

         */

        public boolean add(String providerName, NewDataStoreParameters parameters, boolean overwrite)

        throws DataException {

                // TODO Auto-generated method stub

                return false;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#canAdd()

         */

        public boolean canAdd() {

                // TODO Auto-generated method stub

                return false;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#canAdd(java.lang.String)

         */

        public boolean canAdd(String storeName) throws DataException {

                // TODO Auto-generated method stub

                return false;

        }

        @Override

        protected void doDispose() throws BaseException {

                // Nothing to do

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#getAddParameters(java.lang.String)

         */

        public NewDataStoreParameters getAddParameters(String storeName)

        throws DataException {

                // TODO Auto-generated method stub

                return null;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#getName()

         */

        public String getName() {

                return NAME;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#getParameters()

         */

        public DataServerExplorerParameters getParameters() {

                return parameters;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#list()

         */

        public List list() throws DataException {

                ArrayList list = new ArrayList();

                Hashtable features = wfsClient.getFeatures();

                Iterator it = features.keySet().iterator();

                DataStoreParameters dsp = null;

                while (it.hasNext()){

                        String key = (String)it.next();

                        WFSFeature feature = (WFSFeature)features.get(key);

                        list.add(getParametersFor(feature));

                }

                return list;

        }

        public DataStoreParameters getParametersFor(WFSFeature feature)

        throws DataException {

                WFSStoreParameters params = (WFSStoreParameters)dataManager

                .createStoreParameters(WFSStoreProvider.NAME);

                params.setUrl(url);

                params.setFeatureType(feature.getNamespace().getName(), 

                                feature.getNamespace().getLocation(),

                                feature.getName());

                return params;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#list(int)

         */

        public List list(int mode) throws DataException {

                return list();

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.DataServerExplorer#remove(org.gvsig.fmap.dal.DataStoreParameters)

         */

        public void remove(DataStoreParameters parameters) throws DataException {

                // TODO Auto-generated method stub

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.spi.DataServerExplorerProvider#getServerExplorerProviderServices()

         */

        public DataServerExplorerProviderServices getServerExplorerProviderServices() {

                // TODO Auto-generated method stub

                return null;

        }

        /* (non-Javadoc)

         * @see org.gvsig.fmap.dal.spi.DataServerExplorerProvider#initialize(org.gvsig.fmap.dal.spi.DataServerExplorerProviderServices)

         */

        public void initialize(

                        DataServerExplorerProviderServices dataServerExplorerProviderServices) {

                // TODO Auto-generated method stub

        }

        /**

         * @return

         */

        public String getTitle() {

                String title = wfsClient.getServiceInformation().title;

                if (title == null){

                        return "None";

                }

                return title;                

        }

        /**

         * @return

         */

        public String getAbstract() {

                String _abstract = wfsClient.getServiceInformation().abstr;

                if (_abstract == null){

                        return "None";

                }

                return _abstract;

        }

        /**

         * @return

         */

        public String getServerType() {

                String serverVersion = wfsClient.getVersion();

                if (serverVersion == null) {

                        return "WFS";

                }

                return "WFS "+ serverVersion;

        }

        /**

         * @return

         */

        public String getUrl() {

                return wfsClient.getHost();

        }

        /**

         * @return

         */

        public int getBuffer() {

                return status.getBuffer();

        }

        /**

         * @return

         */

        public int getTimeOut() {

                return status.getTimeout();

        }

        /**

         * @param userName

         */

        public void setUserName(String userName) {

                status.setUserName(userName);                

        }

        /**

         * @param buffer

         */

        public void setBuffer(int buffer) {

                status.setBuffer(buffer);

        }

        /**

         * @param timeout

         */

        public void setTimeOut(int timeout) {

                status.setTimeout(timeout);                

        }

        /**

         * @return

         */

        public String getVersion() {

                return wfsClient.getVersion();

        }

        public List getDataStoreProviderNames() {

                List x = new ArrayList();

                x.add(WFSStoreProvider.NAME);

                return x;

        }        

}