root / branches / v2_0_0_prep / extensions / extWFS2 / src / org / gvsig / fmap / dal / store / wfs / WFSStoreProvider.java @ 32880
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 {Iver T.I.} {Task}
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*/
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package org.gvsig.fmap.dal.store.wfs; |
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import java.io.IOException; |
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import java.util.List; |
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import java.util.Vector; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.fmap.crs.CRSFactory; |
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import org.gvsig.fmap.dal.DALLocator; |
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import org.gvsig.fmap.dal.DataManager; |
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import org.gvsig.fmap.dal.DataServerExplorer; |
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import org.gvsig.fmap.dal.DataStoreParameters; |
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import org.gvsig.fmap.dal.exception.DataException; |
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import org.gvsig.fmap.dal.exception.InitializeException; |
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import org.gvsig.fmap.dal.exception.OpenException; |
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import org.gvsig.fmap.dal.exception.ReadException; |
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import org.gvsig.fmap.dal.feature.FeatureQuery; |
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import org.gvsig.fmap.dal.feature.FeatureStore; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.dal.feature.spi.FeatureSetProvider; |
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import org.gvsig.fmap.dal.resource.spi.ResourceConsumer; |
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import org.gvsig.fmap.dal.serverexplorer.wfs.WFSServerExplorer; |
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import org.gvsig.fmap.dal.serverexplorer.wfs.WFSServerExplorerParameters; |
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import org.gvsig.fmap.dal.spi.DataStoreProviderServices; |
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import org.gvsig.fmap.dal.store.gpe.GPEStoreProvider; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.GeometryManager; |
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import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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import org.gvsig.fmap.geom.Geometry.TYPES; |
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import org.gvsig.fmap.geom.exception.CreateEnvelopeException; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.remoteclient.ogc.OGCClientOperation; |
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import org.gvsig.remoteclient.utils.BoundaryBox; |
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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.WFSStatus; |
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import org.gvsig.remoteclient.wfs.exceptions.WFSException; |
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import org.gvsig.remoteclient.wfs.filters.filterencoding.FilterEncoding; |
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import org.gvsig.remoteclient.wfs.schema.XMLElement; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DynClass; |
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import org.gvsig.tools.dynobject.DynObjectManager; |
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import org.gvsig.tools.evaluator.EvaluatorFieldValue; |
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import org.gvsig.tools.evaluator.EvaluatorFieldValueMatch; |
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import org.gvsig.tools.evaluator.EvaluatorFieldsInfo; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/**
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* @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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*/
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public class WFSStoreProvider extends GPEStoreProvider implements |
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ResourceConsumer {
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private static final Logger logger = LoggerFactory.getLogger(WFSStoreProvider.class); |
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public static String NAME = "WFSStore"; |
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public static String DESCRIPTION = "WFS store to load WFS resources"; |
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private static final String METADATA_DEFINITION_NAME = "WFSStore"; |
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protected static DynClass DYNCLASS = null; |
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private IProjection projection;
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boolean isFilterByAreaSupported = true; |
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//WFS Parameters
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private WFSClient wfsClient;
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private WFSStatus wfsStatus;
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public WFSStoreProvider(DataStoreParameters params,
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DataStoreProviderServices storeServices) |
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throws InitializeException {
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super(params, storeServices, ToolsLocator.getDynObjectManager()
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.createDynObject(DYNCLASS)); |
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} |
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protected void retrieveFile() throws InitializeException{ |
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try {
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WFSStoreParameters wfsParameters = getWFSParameters(); |
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try {
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if (wfsParameters.getVersion() == null){ |
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wfsClient = new WFSClient(wfsParameters.getUrl());
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wfsParameters.setVersion(wfsClient.getVersion()); |
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}else{
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wfsClient = new WFSClient(wfsParameters.getUrl(), wfsParameters.getVersion());
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} |
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} catch (IOException e) { |
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throw new InitializeException(e); |
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} |
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wfsStatus = new WFSStatus( wfsParameters.getFeatureType(),
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wfsParameters.getFeaturePrefix()); |
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wfsStatus.setNamespace(wfsParameters.getFeatureNamespace()); |
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wfsStatus.setFields(wfsParameters.getFields()); |
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//wfsStatus.setFilterQuery(wfsParameters.getFilterEncoding());
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wfsStatus.setTimeout(wfsParameters.getTimeOut()); |
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wfsStatus.setBuffer(wfsParameters.getMaxFeatures()); |
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wfsStatus.setUserName(wfsParameters.getUser()); |
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wfsStatus.setPassword(wfsParameters.getPassword()); |
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//Setting the envelope for the layer
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wfsClient.getCapabilities(wfsStatus, false, null); |
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Envelope envelope = calculateFullEnvelope(); |
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if (envelope != null){ |
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this.setDynValue("Envelope", envelope); |
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} |
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m_Fich = wfsClient.getFeature(wfsStatus, true, null); |
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} catch (WFSException e) {
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throw new InitializeException("Impossible to retrieve the file", e); |
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} |
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} |
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private Envelope calculateFullEnvelope() {
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GeometryManager geometryManager = GeometryLocator.getGeometryManager(); |
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Object obj = wfsClient.getFeatures().get(wfsStatus.getFeatureName());
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try{
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if (obj != null){ |
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WFSFeature feature = (WFSFeature)obj; |
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if (feature.getSrs().size() > 0){ |
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String srs = (String)feature.getSrs().get(0); |
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BoundaryBox boundaryBox = feature.getBbox("srs");
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if (boundaryBox == null) |
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{
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boundaryBox = feature.getBbox(getEPSGCode("srs"));
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} |
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//The projection is found
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if (boundaryBox != null){ |
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return geometryManager.createEnvelope(boundaryBox.getXmin(),
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boundaryBox.getYmin(), boundaryBox.getXmax(), boundaryBox.getYmax(), SUBTYPES.GEOM2D); |
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} |
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//Check if there is a latlon envelope
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boundaryBox = feature.getLatLonBbox(); |
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if (boundaryBox != null){ |
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Envelope envelope = geometryManager.createEnvelope(boundaryBox.getXmin(), |
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boundaryBox.getYmin(), boundaryBox.getXmax(), boundaryBox.getYmax(), SUBTYPES.GEOM2D); |
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IProjection projection = CRSFactory.getCRS(getEPSGCode(srs)); |
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if (projection != null){ |
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ICoordTrans coordTrans = projection.getCT(CRSFactory.getCRS(getEPSGCode("EPSG:4326")));
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return envelope.convert(coordTrans);
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} |
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} |
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} |
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} |
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}catch(CreateEnvelopeException e){
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logger.error("Impossible to create an envelope", e);
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} |
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return null; |
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} |
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private WFSStoreParameters getWFSParameters() {
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return (WFSStoreParameters) getParameters();
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.store.gpe.GPEStoreProvider#open()
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*/
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public void open() throws OpenException { |
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super.open();
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try {
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List featureTypes = this.getFeatureStore().getFeatureTypes(); |
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for (int i=0 ; i<featureTypes.size() ; i++){ |
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FeatureType featureType = (FeatureType)featureTypes.get(i); |
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} |
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} catch (DataException e) {
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throw new OpenException("Reading the geometry type", e); |
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} |
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} |
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protected static void registerMetadataDefinition() { |
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DynObjectManager dynman = ToolsLocator.getDynObjectManager(); |
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DynClass dynClass; |
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if (DYNCLASS == null) { |
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dynClass = dynman.add(METADATA_DEFINITION_NAME); |
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dynClass.extend(dynman.get(FeatureStore.METADATA_DEFINITION_NAME)); |
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DYNCLASS = dynClass; |
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} |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.feature.spi.AbstractFeatureStoreProvider#getExplorer()
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*/
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public DataServerExplorer getExplorer() throws ReadException { |
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DataManager manager = DALLocator.getDataManager(); |
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WFSServerExplorerParameters params; |
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try {
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params = (WFSServerExplorerParameters) manager |
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.createServerExplorerParameters(WFSServerExplorer.NAME); |
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params.setUrl(wfsClient.getHost()); |
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return manager.openServerExplorer(WFSServerExplorer.NAME,params);
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} catch (Exception e) { |
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throw new ReadException(this.getName(), e); |
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} |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.feature.spi.FeatureStoreProvider#getName()
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*/
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public String getName() { |
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return NAME;
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.store.gpe.GPEStoreProvider#createSet(org.gvsig.fmap.dal.feature.FeatureQuery)
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*/
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@Override
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public FeatureSetProvider createSet(FeatureQuery query)
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throws DataException {
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return createSet(query, null); |
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} |
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/* (non-Javadoc)
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* @see org.gvsig.fmap.dal.store.gpe.GPEStoreProvider#createSet(org.gvsig.fmap.dal.feature.FeatureQuery, org.gvsig.fmap.dal.feature.FeatureType)
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*/
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@Override
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public FeatureSetProvider createSet(FeatureQuery query,
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FeatureType featureType) throws DataException {
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//If it is possible to execute a spatial query...
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if (query.getFilter() != null){ |
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executeSpatialQuery(query); |
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}else{
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executeQuery(); |
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} |
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isOpen = false;
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open(); |
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return super.createSet(query, featureType); |
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} |
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/**
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* It executes a wfs Query without spatial filter
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* @throws DataException
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*/
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private void executeQuery() throws DataException{ |
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try{
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wfsStatus.setResultType(WFSStatus.RESULTYPE_RESULTS); |
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m_Fich = wfsClient.getFeature(wfsStatus, true, null); |
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} catch (WFSException e) {
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throw new InitializeException("Impossible to retrieve the file", e); |
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} |
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} |
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/**
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* Executes a new query sending the FilterEncoding request to the server
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* @param query
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* The Query to send
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* @throws InitializeException
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* If there is a problem with the request or the parsing process
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*/
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private boolean executeSpatialQuery(FeatureQuery query) throws DataException{ |
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EvaluatorFieldsInfo fieldsInfo = query.getFilter().getFieldsInfo(); |
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String[] fields = fieldsInfo.getFieldNames(); |
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for (int i=0 ; i<fields.length ; i++){ |
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EvaluatorFieldValue[] evaluatorFieldValues = fieldsInfo.getFieldValues(fields[i]);
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for (int j=0 ; j<evaluatorFieldValues.length ; j++){ |
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if (EvaluatorFieldValue.MATCH == evaluatorFieldValues[j].getType()){
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EvaluatorFieldValueMatch evaluatorFieldValueMatch = (EvaluatorFieldValueMatch)evaluatorFieldValues[j]; |
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Object area = evaluatorFieldValueMatch.getValue();
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if (area instanceof Envelope){ |
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executeSpatialQueryFromEnvelope(evaluatorFieldValueMatch.getFieldName(), |
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(Envelope)area); |
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return true; |
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}else if (area instanceof Geometry){ |
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executeSpatialQueryFromGeometry(evaluatorFieldValueMatch.getFieldName(), |
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(Geometry)area); |
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return true; |
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} |
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} |
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} |
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} |
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return false; |
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} |
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private void executeSpatialQueryFromGeometry(String the_geom, Geometry geometry) throws DataException{ |
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wfsStatus.setFilterByArea(geometry, the_geom, projection.getAbrev(), |
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FilterEncoding.GEOMETRIC_OPERATOR_CONTAINS); |
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executeSpatialQuery(); |
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} |
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private void executeSpatialQueryFromEnvelope(String the_geom, Envelope envelope) throws DataException{ |
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wfsStatus.setFilterByArea(envelope, the_geom, projection.getAbrev(), |
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FilterEncoding.GEOMETRIC_OPERATOR_CONTAINS); |
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executeSpatialQuery(); |
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} |
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private void executeSpatialQuery() throws DataException{ |
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try {
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wfsStatus.setProtocol(OGCClientOperation.PROTOCOL_POST); |
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//If it is not possible to calculate the
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wfsStatus.setResultType(WFSStatus.RESULTYPE_RESULTS); |
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m_Fich = wfsClient.getFeature(wfsStatus, true, null); |
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} catch (WFSException e) {
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throw new InitializeException("Impossible to retrieve the file", e); |
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} |
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} |
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public Object getSourceId() { |
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StringBuffer sourceID = new StringBuffer(getWFSParameters().getUrl()); |
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sourceID.append("_" + getWFSParameters().getFeatureType());
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int hash = sourceID.hashCode();
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if (sourceID.length() > 60){ |
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return sourceID.substring(0, 60) + "_" + hash; |
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}else{
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return sourceID.toString() + "_" + hash; |
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} |
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} |
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protected IProjection getSRS(){
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if (projection == null){ |
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try {
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wfsClient.getCapabilities(wfsStatus, false, null); |
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wfsClient.describeFeatureType(wfsStatus, false, null); |
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WFSFeature feature = (WFSFeature) wfsClient.getFeatures().get(wfsStatus.getFeatureName()); |
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if (feature.getSrs().size() > 0){ |
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projection = CRSFactory.getCRS(getEPSGCode((String)feature.getSrs().get(0))); |
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} |
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} catch (WFSException e) {
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logger.error("Error retrieving the feature type");
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} |
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} |
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return projection;
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} |
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private String getEPSGCode(String srs){ |
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if (srs == null){ |
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return null; |
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} |
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if (srs.startsWith("urn:x-ogc:def:crs:")){ |
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String newString = srs.substring(srs.lastIndexOf(":") + 1, srs.length()); |
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if (srs.indexOf("EPSG") > 0){ |
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if (newString.indexOf("EPSG") < 0){ |
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newString = "EPSG:" + newString;
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} |
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} |
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return newString;
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} |
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if (srs.toLowerCase().startsWith("crs:")){ |
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return srs.substring(4, srs.length()); |
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} |
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return srs;
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} |
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protected int getGeometryType() { |
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WFSFeature feature = (WFSFeature) wfsClient.getFeatures().get(wfsStatus.getFeatureName()); |
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Vector field = feature.getFields();
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if (field.size() > 0){ |
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XMLElement rootElement = (XMLElement)field.get(0);
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Vector children = rootElement.getChildren();
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for (int i=0 ; i<children.size() ; i++){ |
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XMLElement child = (XMLElement)children.get(i); |
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String type = child.getEntityType().getName();
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if (type != null){ |
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int index = type.indexOf(":"); |
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if (index > -1){ |
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type = type.substring(index+1);
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} |
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Object obj = xmlSchemaManager.getApplicationGeometryTypeByFormat("gml", type); |
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if (obj != null){ |
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return (Integer)obj; |
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} |
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} |
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} |
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} |
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return TYPES.GEOMETRY;
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} |
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} |
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