ingo@1022: /*
ingo@1022:  * Copyright (c) 2010 by Intevation GmbH
ingo@1022:  *
ingo@1022:  * This program is free software under the LGPL (>=v2.1)
ingo@1022:  * Read the file LGPL.txt coming with the software for details
ingo@1022:  * or visit http://www.gnu.org/licenses/ if it does not exist.
ingo@1022:  */
ingo@1022: 
tim@402: package de.intevation.gnv.action.mapviewer;
tim@402: 
tim@558: import java.io.ByteArrayInputStream;
tim@402: import java.io.InputStream;
tim@558: import java.util.ArrayList;
tim@402: import java.util.Collection;
tim@558: import java.util.Iterator;
tim@402: 
tim@402: import javax.servlet.http.HttpServletRequest;
tim@402: import javax.servlet.http.HttpServletResponse;
tim@402: 
tim@402: import org.apache.log4j.Logger;
tim@402: import org.apache.struts.action.ActionForm;
tim@402: import org.apache.struts.action.ActionForward;
tim@402: import org.apache.struts.action.ActionMapping;
tim@402: 
tim@952: import de.intevation.gnv.action.ArtifactDatabaseActionBase;
tim@952: import de.intevation.gnv.action.mapviewer.parser.ExternalCallParser;
tim@952: import de.intevation.gnv.action.mapviewer.parser.XMLExternalCallParser;
tim@952: import de.intevation.gnv.action.sessionmodel.SessionModel;
tim@952: import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
tim@952: import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
tim@952: import de.intevation.gnv.artifactdatabase.objects.ArtifactObject;
tim@952: import de.intevation.gnv.artifactdatabase.objects.map.MapService;
tim@952: 
tim@402: /**
tim@952:  * This class provides the businesslogic for handling an 
tim@952:  * MV-GNV-Interface-call.
tim@952:  * This call can be done in two ways.
tim@952:  * First is to put the requestbody into the body of the http-post-request.
tim@952:  * Second to put the requestbody to the parameter "document" of the
tim@952:  * http-post-request.
sascha@684:  * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
tim@402:  */
tim@402: public class MapViewerCallAction extends ArtifactDatabaseActionBase {
tim@402: 
tim@402:     /**
tim@402:      * the logger, used to log exceptions and additonaly information
tim@402:      */
tim@402:     private static Logger log = Logger.getLogger(MapViewerCallAction.class);
tim@402: 
tim@402:     /**
tim@402:      * Constructor
tim@402:      */
tim@402:     public MapViewerCallAction() {
tim@402:         super();
tim@402:     }
tim@402: 
tim@402:     /**
tim@402:      * @see de.intevation.gnv.action.ArtifactDatabaseActionBase#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
tim@402:      */
tim@402:     @Override
tim@402:     public ActionForward execute(ActionMapping mapping, ActionForm form,
tim@402:                                  HttpServletRequest request,
tim@402:                                  HttpServletResponse response) throws Exception {
tim@402:         log.debug("MapViewerCallAction.execute");
tim@558:         InputStream inputStream = null;
tim@558:         String documentvalue = request.getParameter("document");
tim@558:         if (documentvalue != null){
tim@562:             documentvalue = documentvalue.trim();
tim@558:             inputStream = new ByteArrayInputStream(documentvalue.getBytes());
tim@558:         }else{
tim@558:             inputStream = request.getInputStream();
tim@558:         }
sascha@681: 
tim@402:         if (inputStream != null){
tim@402:             try {
tim@402:                 ExternalCallParser ecp = new XMLExternalCallParser(inputStream);
tim@402:                 ecp.parse();
tim@402:                 String geometry = ecp.getGeometry();
tim@402:                 String srs = ecp.getSRS();
tim@402:                 Collection<MapService> mapServices = ecp.getMapServices();
sascha@681: 
sascha@681:                 Collection<ArtifactObject> availableFactories =
tim@558:                        ArtifactDatabaseClientFactory
tim@402:                           .getInstance()
tim@402:                           .getArtifactDatabaseClient(getLocale(request))
tim@402:                           .getArtifactFactoryMetaInformation(mapServices,
tim@402:                                                              geometry,
tim@402:                                                              srs);
sascha@681: 
sascha@681:                 Collection<ArtifactObject> providedFactories =
tim@558:                         ArtifactDatabaseClientFactory
tim@558:                            .getInstance()
tim@558:                            .getArtifactDatabaseClient(getLocale(request))
tim@558:                            .getArtifactFactories();
sascha@681: 
tim@558:                 // Sort out which ArtifactFactories should not be used.
sascha@681:                 Collection<ArtifactObject> usedFactories =
tim@558:                        new ArrayList<ArtifactObject>(availableFactories.size());
sascha@681: 
tim@558:                 Iterator<ArtifactObject> it = availableFactories.iterator();
tim@558:                 while (it.hasNext()){
tim@558:                     ArtifactObject ao = it.next();
tim@558:                     if (providedFactories.contains(ao)){
tim@558:                         usedFactories.add(ao);
tim@558:                     }
tim@558:                 }
sascha@681: 
tim@558:                 SessionModel sm = SessionModelFactory
tim@558:                                      .getInstance()
tim@558:                                      .getSessionModel(request);
tim@558:                 sm.resetModel();
tim@558:                 sm.setArtifacteFactories(usedFactories);
tim@402:             } catch (Exception e) {
tim@402:                 log.error(e,e);
tim@402:             }
tim@402:         }else{
tim@402:             log.error("Kein Anfragedokument übergeben.");
tim@402:         }
tim@402:         return super.execute(mapping, form, request, response);
tim@402:     }
tim@402: 
tim@402: }