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@13: package de.intevation.gnv.action;
tim@13: 
ingo@409: import de.intevation.gnv.action.sessionmodel.SessionModel;
ingo@409: import de.intevation.gnv.action.sessionmodel.SessionModelFactory;
ingo@409: 
ingo@409: import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClient;
ingo@409: import de.intevation.gnv.artifactdatabase.client.ArtifactDatabaseClientFactory;
ingo@409: 
ingo@409: import de.intevation.gnv.artifactdatabase.objects.DefaultInputParameter;
ingo@409: import de.intevation.gnv.artifactdatabase.objects.InputParameter;
ingo@409: import de.intevation.gnv.artifactdatabase.objects.OutputMode;
ingo@409: import de.intevation.gnv.artifactdatabase.objects.OutputParameter;
ingo@409: 
tim@13: import java.io.OutputStream;
ingo@409: 
tim@13: import java.util.ArrayList;
tim@13: import java.util.Collection;
tim@13: import java.util.Iterator;
tim@13: 
tim@13: import javax.servlet.http.HttpServletRequest;
tim@13: import javax.servlet.http.HttpServletResponse;
tim@13: 
tim@29: import org.apache.log4j.Logger;
ingo@409: 
tim@13: import org.apache.struts.action.ActionForm;
tim@13: import org.apache.struts.action.ActionForward;
tim@13: import org.apache.struts.action.ActionMapping;
tim@13: 
tim@13: /**
ingo@690:  * This controller calls the out operation of the server directly. Html img-tags
ingo@690:  * in jsp pages use this action to fetch charts and histograms.
sascha@699:  *
sascha@684:  * @author <a href="mailto:tim.englich@intevation.de">Tim Englich</a>
sascha@681:  *
tim@13:  */
tim@13: public class DoOutputAction extends ArtifactDatabaseActionBase {
tim@13: 
tim@13:     /**
tim@29:      * the logger, used to log exceptions and additonaly information
tim@29:      */
tim@29:     private static Logger log = Logger.getLogger(DoOutputAction.class);
tim@36: 
tim@29:     /**
tim@13:      * Constructor
tim@13:      */
tim@13:     public DoOutputAction() {
tim@13:         super();
tim@13:     }
tim@13: 
ingo@690: 
tim@13:     @Override
tim@13:     public ActionForward execute(ActionMapping mapping, ActionForm form,
tim@38:                                  HttpServletRequest request,
tim@38:                                  HttpServletResponse response) throws Exception {
ingo@991:         if (isSessionExhausted(request)) {
ingo@991:             return sessionExhaustedForward(mapping, form, request, response);
ingo@991:         }
ingo@991: 
tim@29:         log.debug("DoOutputAction.execute");
tim@34:         try {
ingo@583:             String target   = request.getParameter("target");
tim@34:             String mimeType = request.getParameter("mimetype");
ingo@583:             String mode     = request.getParameter("mode");
tim@36: 
tim@36:             log.debug("Target: " + target);
tim@36:             log.debug("MimeType: " + mimeType);
ingo@583:             log.debug("ExportMode: " + mode);
tim@36: 
tim@34:             // TODO Check if is propper;
tim@36: 
tim@36:             SessionModel sm = SessionModelFactory.getInstance()
tim@36:                     .getSessionModel(request);
tim@36:             OutputMode outputMode = sm.getOutputMode(target);
tim@36:             if (outputMode != null && outputMode.getMimeType().equals(mimeType)) {
tim@36:                 Collection<OutputParameter> inputParameter = outputMode
tim@36:                         .getOutputParameters();
tim@34:                 Collection<InputParameter> ips = null;
tim@36:                 if (inputParameter != null) {
ingo@575:                     ips = new ArrayList<InputParameter>(inputParameter.size()+1);
tim@34:                     Iterator<OutputParameter> it = inputParameter.iterator();
tim@36:                     while (it.hasNext()) {
tim@34:                         String name = it.next().getName();
tim@34:                         String[] values = request.getParameterValues(name);
tim@36:                         InputParameter ip = new DefaultInputParameter(name,
tim@36:                                 values);
tim@34:                         ips.add(ip);
tim@34:                     }
ingo@575: 
ingo@575:                     if (request.getParameter("bintype") != null) {
ingo@575:                         InputParameter ip = new DefaultInputParameter(
ingo@575:                             "bintype", request.getParameterValues("bintype"));
ingo@575:                         ips.add(ip);
ingo@575:                     }
tim@30:                 }
tim@36: 
tim@36:                 ArtifactDatabaseClient adc = ArtifactDatabaseClientFactory
tim@40:                         .getInstance()
tim@40:                         .getArtifactDatabaseClient(getLocale(request));
tim@36: 
tim@34:                 this.setHeaders(target, mimeType, response, request);
tim@36: 
tim@34:                 OutputStream outputStream = response.getOutputStream();
ingo@583:                 adc.doOutput(
ingo@583:                     sm.getSelectedArtifactFactory(),
ingo@583:                     sm.getCurrentArtifact(),
ingo@583:                     outputStream,
ingo@583:                     target,
ingo@583:                     mode,
ingo@583:                     mimeType,
ingo@583:                     ips);
tim@36: 
tim@34:                 outputStream.flush();
tim@34:                 outputStream.close();
tim@36:             } else {
tim@36:                 if (outputMode == null) {
tim@390:                     log.error("Outputmode is not supported.");
tim@36:                 } else if (!outputMode.getMimeType().equals(mimeType)) {
tim@36:                     log.error("MimeType " + mimeType
tim@390:                               + " wis not supported.");
tim@34:                 }
tim@34:                 // TODO FIXME: Fehlerbehandlung
tim@13:             }
tim@34:             return super.execute(mapping, form, request, response);
tim@34:         } catch (Exception e) {
tim@36:             log.error(e, e);
tim@36:             request.setAttribute(
tim@36:                     CommunicationKeys.REQUEST_EXCEPTION_MESSAGE_ID, e
tim@36:                             .getMessage());
tim@34:             return super.getExceptionForward(mapping);
tim@13:         }
tim@13:     }
tim@36: 
tim@36:     protected void setHeaders(String target, String mimeType,
tim@38:                               HttpServletResponse response,
tim@38:                               HttpServletRequest request) {
tim@29:         response.setHeader("Content-Type", mimeType);
tim@29:     }
tim@13: 
tim@13: }
ingo@409: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :