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: 
ingo@670: package de.intevation.gnv.action;
ingo@670: 
ingo@670: import java.io.OutputStream;
ingo@670: 
ingo@670: import javax.servlet.http.HttpServletRequest;
ingo@670: import javax.servlet.http.HttpServletResponse;
ingo@670: 
ingo@670: import org.apache.log4j.Logger;
ingo@670: import org.apache.struts.action.ActionForm;
ingo@670: import org.apache.struts.action.ActionForward;
ingo@670: import org.apache.struts.action.ActionMapping;
ingo@670: 
tim@963: import de.intevation.gnv.action.sessionmodel.SessionModel;
tim@963: import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
tim@963: import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
tim@963: import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
tim@963: import de.intevation.gnv.artifactdatabase.objects.ArtifactObject;
tim@963: 
ingo@670: /**
ingo@690:  * This controller is used to save the current artifact to an xml file. A file
ingo@690:  * dialog is opened to save the file to the local disk.
sascha@699:  *
sascha@684:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@670:  */
ingo@670: public class StoreAction extends ArtifactDatabaseActionBase {
ingo@670: 
ingo@670:     public static final String RESOURCE_DOWNLOAD_FAILURE = "no.artifact.chosen";
ingo@670: 
tim@963:     /**
tim@963:      * the logger, used to log exceptions and additonaly information
tim@963:      */
ingo@670:     private static Logger logger = Logger.getLogger(StoreAction.class);
ingo@670: 
tim@963:     /**
tim@963:      * Constructor
tim@963:      */
ingo@670:     public StoreAction() {
ingo@670:         super();
ingo@670:     }
ingo@670: 
tim@963:     @Override
ingo@670:     public ActionForward execute(
ingo@670:         ActionMapping       mapping,
ingo@670:         ActionForm          form,
ingo@670:         HttpServletRequest  request,
ingo@670:         HttpServletResponse response)
ingo@670:     throws Exception
ingo@670:     {
ingo@991:         if (isSessionExhausted(request)) {
ingo@991:             return sessionExhaustedForward(mapping, form, request, response);
ingo@991:         }
ingo@991: 
ingo@670:         SessionModelFactory sf = SessionModelFactory.getInstance();
ingo@670:         SessionModel        sm = sf.getSessionModel(request);
ingo@670: 
ingo@670:         ArtifactDatabaseClientFactory adcf =
ingo@670:             ArtifactDatabaseClientFactory.getInstance();
ingo@670:         ArtifactDatabaseClient adc =
ingo@670:             adcf.getArtifactDatabaseClient(getLocale(request));
ingo@670:         ArtifactObject artifact = sm.getCurrentArtifact();
ingo@670: 
ingo@670:         // no artifact set at the moment (which means, the user didn't select a
ingo@670:         // fis yet.
ingo@670:         if (artifact == null) {
ingo@670:             logger.warn("No artifact/fis selected yet.");
ingo@670: 
ingo@670:             request.setAttribute(
ingo@670:                 CommunicationKeys.REQUEST_EXCEPTION_PROJECT,
ingo@670:                 RESOURCE_DOWNLOAD_FAILURE);
ingo@670: 
ingo@670:             return super.execute(mapping, form, request, response);
ingo@670:         }
ingo@670: 
ingo@670:         logger.info("Export artifact " + artifact.getId());
ingo@670:         setHeaders(response, artifact.getId());
ingo@670: 
ingo@670:         OutputStream out = response.getOutputStream();
ingo@670:         adc.doExport(
ingo@670:             sm.getSelectedArtifactFactory(),
ingo@670:             artifact,
ingo@670:             out);
ingo@670: 
ingo@670:         out.flush();
ingo@670:         out.close();
ingo@670: 
ingo@670:         return null;
ingo@670:     }
tim@963:     
tim@963:     /**
tim@963:      * Sets the header of the response.
tim@963:      * @param response the response
tim@963:      * @param uuid the uuid of the artifact
tim@963:      */
ingo@670:     protected void setHeaders(HttpServletResponse response, String uuid) {
ingo@670:         String filename = "GNVArtefakt_" + uuid + ".xml";
ingo@670: 
ingo@670:         response.setHeader("Content-Type", "application/xml");
ingo@670:         response.setHeader(
ingo@670:             "Content-Disposition",
ingo@670:             "attachment;filename=" + filename);
ingo@670:     }
ingo@670: }
ingo@670: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :