root / branches / v2_0_0_prep / applications / appGazetteer / src / org / gvsig / gazetteer / wfs / drivers / WFSServiceDriver.java @ 34026
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.gazetteer.wfs.drivers; |
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import java.io.File; |
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import java.net.MalformedURLException; |
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import java.net.URI; |
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import java.net.URISyntaxException; |
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import java.util.ArrayList; |
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import java.util.Hashtable; |
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import java.util.Iterator; |
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import org.gvsig.catalog.drivers.DiscoveryServiceCapabilities; |
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import org.gvsig.catalog.utils.CatalogConstants; |
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import org.gvsig.gazetteer.drivers.AbstractGazetteerServiceDriver; |
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import org.gvsig.gazetteer.drivers.GazetteerCapabilities; |
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import org.gvsig.gazetteer.querys.Feature; |
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import org.gvsig.gazetteer.querys.FeatureType; |
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import org.gvsig.gazetteer.querys.FeatureTypeAttribute; |
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import org.gvsig.gazetteer.querys.GazetteerQuery; |
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import org.gvsig.gazetteer.utils.GazetteerFormatter; |
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import org.gvsig.gpe.lib.api.GPELocator; |
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import org.gvsig.gpe.lib.api.GPEManager; |
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import org.gvsig.i18n.Messages; |
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import org.gvsig.remoteclient.wfs.WFSClient; |
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import org.gvsig.remoteclient.wfs.WFSFeature; |
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import org.gvsig.remoteclient.wfs.WFSFeatureField; |
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import org.gvsig.remoteclient.wfs.WFSStatus; |
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import org.gvsig.remoteclient.wfs.filters.filterencoding.FilterEncoding; |
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import org.gvsig.utils.swing.jcomboServer.ServerData; |
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/**
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* Driver for the WFS protocol
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* @author Jorge Piera Llodra (piera_jor@gva.es)
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*/
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public class WFSServiceDriver extends AbstractGazetteerServiceDriver { |
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protected WFSClient client = null; |
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protected WFSStatus status = null; |
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private static GPEManager gpeManager = GPELocator.getGPEManager(); |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.catalogClient.drivers.IDiscoveryServiceDriver#getCapabilities(java.net.URI)
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*/
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public DiscoveryServiceCapabilities getCapabilities(URI uri) { |
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GazetteerCapabilities capabilities = new GazetteerCapabilities();
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String sURL = null; |
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try {
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sURL = uri.toURL().toString(); |
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} catch (MalformedURLException e) { |
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setServerAnswerReady("errorServerNotFound");
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return null; |
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} |
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status = new WFSStatus(sURL);
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try {
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client = new WFSClient(sURL);
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client.getCapabilities(status, true, null); |
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} catch (Exception e) { |
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capabilities.setServerMessage(Messages.getText("errorNotParsedReply"));
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capabilities.setAvailable(false);
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return capabilities;
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} |
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setServerAnswerReady(client.getServiceInformation().name); |
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Hashtable features = client.getFeatures();
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setFeatureTypes(convertFeatureNames(features)); |
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capabilities.setServerMessage(client.getServiceInformation().name + |
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client.getServiceInformation().abstr); |
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capabilities.setFeatureTypes(getFeatureTypes()); |
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return capabilities;
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} |
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/**
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* Convert the features from the remote services format to
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* the gazetteer format
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* @param features
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* @return
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*/
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private FeatureType[] convertFeatureNames(Hashtable features) { |
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Iterator it = features.keySet().iterator();
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FeatureType[] featureTypes = new FeatureType[features.size()]; |
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int i = 0; |
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while (it.hasNext()){
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String featureName = (String)it.next(); |
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WFSFeature feature = (WFSFeature)features.get(featureName); |
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featureTypes[i] = new FeatureType(featureName);
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featureTypes[i].setTitle(feature.getTitle()); |
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i++; |
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} |
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return featureTypes;
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#describeFeatureType(java.net.URI, java.lang.String)
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*/
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public FeatureTypeAttribute[] describeFeatureType(URI uri, String feature) { |
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status.setFeatureName(feature); |
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try{
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client.describeFeatureType(status, false, null); |
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}catch (Exception e){ |
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//Impossible to retrieve the attributes
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return new FeatureTypeAttribute[0]; |
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} |
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WFSFeature wfsFeature = (WFSFeature)client.getFeatures().get(feature); |
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if ((wfsFeature.getSrs() != null) && (wfsFeature.getSrs().size() > 0)){ |
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this.setProjection((String)wfsFeature.getSrs().get(0)); |
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} |
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return covertFeatuteAttributes(wfsFeature);
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gazetteer.drivers.AsbtractGazetteerServiceDriver#isDescribeFeatureTypeNeeded()
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*/
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public boolean isDescribeFeatureTypeNeeded(){ |
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return true; |
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} |
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/**
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* Convert the feature attributes
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* @param feature
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* a Remote clients feature
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* @return
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* A list of attributes
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*/
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private FeatureTypeAttribute[] covertFeatuteAttributes(WFSFeature feature) { |
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FeatureTypeAttribute[] attributes = new FeatureTypeAttribute[feature.getFieldSize()]; |
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for (int i=0 ; i<feature.getFieldSize(); i++){ |
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WFSFeatureField child = feature.getFieldAt(i); |
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attributes[i] = new FeatureTypeAttribute(child.getName(),0,false,child.getType()); |
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} |
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return attributes;
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getFeature(java.net.URI, es.gva.cit.gazetteer.querys.Query)
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*/
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public Feature[] getFeature(URI uri, GazetteerQuery query) throws Exception { |
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//Set the filter
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String sQuery = getFilterSQL(query);
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if (sQuery != null){ |
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status.setFilterByAttribute(sQuery); |
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} |
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status.setFields(new String[0]); |
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try{
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File file = client.getFeature(status, false, null); |
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return parseOutputFile(file,query.getFieldAttribute());
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}catch(Exception e){ |
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e.printStackTrace(); |
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return new Feature[0]; |
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} |
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} |
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/**
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* Parses the GML file
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* @param file
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* @return
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* @throws GPEParserCreationException
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* @throws URISyntaxException
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*/
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protected Feature[] parseOutputFile(File file, String fieldAttribute) throws Exception { |
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URI uri = file.toURI();
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WFSGPEErrorHandler errorHandler = new WFSGPEErrorHandler();
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WFSGPEContentHandler contentHandler = new WFSGPEContentHandler(fieldAttribute);
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gpeManager.parse(contentHandler, errorHandler, uri); |
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ArrayList features = contentHandler.getFeatures();
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Feature[] auxFeatures = new Feature[features.size()]; |
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for (int i=0 ; i<features.size() ; i++){ |
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auxFeatures[i] = (Feature)features.get(i); |
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} |
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return auxFeatures;
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} |
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/**
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* Creates a SQL filter to do the search
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* @return
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* A standard SQL query
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*/
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protected String getFilterSQL(GazetteerQuery query){ |
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StringBuffer buffer = new StringBuffer(); |
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if ((query.getName() == null) || (query.getName().equals(""))){ |
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return null; |
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} |
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if (query.getNameFilter().equals(CatalogConstants.EXACT_WORDS)){
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buffer.append("(" + query.getFieldAttribute() + " = " + query.getName() + ")"); |
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}else{
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String conector = null; |
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if (query.getNameFilter().equals(CatalogConstants.ALL_WORDS)){
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conector = "AND";
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}else if (query.getNameFilter().equals(CatalogConstants.ANY_WORD)){ |
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conector = "OR";
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} |
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String[] words = query.getName().split(" "); |
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for (int i=0 ; i<words.length ; i++){ |
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buffer.append("(" + query.getFieldAttribute() + " = " + words[i] + ")"); |
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if (i < words.length - 1){ |
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buffer.append(" " + conector + " "); |
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} |
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} |
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} |
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FilterEncoding fe = GazetteerFormatter.createFilter(); |
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fe.setQueryByAttribute(buffer.toString()); |
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return fe.toString();
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#isProtocolSupported(java.net.URI)
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*/
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public boolean isProtocolSupported(URI uri) { |
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return true; |
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getDefaultPort()
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*/
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public int getDefaultPort() { |
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return 80; |
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getDefaultSchema()
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*/
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public String getDefaultSchema() { |
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return "http"; |
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gazetteer.drivers.IGazetteerServiceDriver#getServiceName()
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*/
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public String getServiceName() { |
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return ServerData.SERVER_SUBTYPE_GAZETTEER_WFS;
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} |
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} |