Ejemplo n.º 1
0
  // ## operation writeChemkinInputFile(ReactionModel,SystemSnapshot)
  public static void writeChemkinInputFile(
      final ReactionModel p_reactionModel, SystemSnapshot p_beginStatus) {
    // #[ operation writeChemkinInputFile(ReactionModel,SystemSnapshot)

    StringBuilder result = new StringBuilder();
    result.append(writeChemkinHeader());
    result.append(writeChemkinElement());
    double start = System.currentTimeMillis();
    result.append(writeChemkinSpecies(p_reactionModel, p_beginStatus));
    result.append(writeChemkinThermo(p_reactionModel));
    Global.chemkinThermo = Global.chemkinThermo + (System.currentTimeMillis() - start) / 1000 / 60;
    start = System.currentTimeMillis();
    result.append(
        writeChemkinPdepReactions(
            p_reactionModel, p_beginStatus)); // 10/26/07 gmagoon: changed to pass p_beginStatus
    // result.append(writeChemkinPdepReactions(p_reactionModel));
    Global.chemkinReaction =
        Global.chemkinReaction + (System.currentTimeMillis() - start) / 1000 / 60;

    String dir = System.getProperty("RMG.workingDirectory");
    if (!dir.endsWith("/")) dir += "/";
    dir += "software/reactorModel/";
    String file = "chemkin/chem.inp";

    try {
      FileWriter fw = new FileWriter(file);
      fw.write(result.toString());
      fw.close();
    } catch (Exception e) {
      System.out.println("Error in writing chemkin input file chem.inp!");
      System.out.println(e.getMessage());
      System.exit(0);
    }

    if (PDepRateConstant.getMode() == Mode.CHEBYSHEV
        || PDepRateConstant.getMode() == Mode.PDEPARRHENIUS
        || PDepRateConstant.getMode() == Mode.RATE) {
      StringBuilder gridOfRateCoeffs = new StringBuilder();
      gridOfRateCoeffs.append(writeGridOfRateCoeffs(p_reactionModel));
      String newFile = "chemkin/tableOfRateCoeffs.txt";
      try {
        FileWriter fw = new FileWriter(newFile);
        fw.write(gridOfRateCoeffs.toString());
        fw.close();
      } catch (Exception e) {
        System.out.println("Error in writing tableOfRateCoeffs.txt");
        System.out.println(e.getMessage());
        System.exit(0);
      }
    }

    // #]
  }
Ejemplo n.º 2
0
  public static void writeChemkinInputFile(ReactionSystem rs) {
    // #[ operation writeChemkinInputFile(ReactionModel,SystemSnapshot)

    StringBuilder result = new StringBuilder();
    result.append(writeChemkinHeader());
    result.append(writeChemkinElement());
    double start = System.currentTimeMillis();
    result.append(writeChemkinSpecies(rs.reactionModel, rs.initialStatus));
    result.append(writeChemkinThermo(rs.reactionModel));
    Global.chemkinThermo = Global.chemkinThermo + (System.currentTimeMillis() - start) / 1000 / 60;
    start = System.currentTimeMillis();
    result.append(writeChemkinPdepReactions(rs));
    Global.chemkinReaction =
        Global.chemkinReaction + (System.currentTimeMillis() - start) / 1000 / 60;

    String dir = System.getProperty("RMG.workingDirectory");
    if (!dir.endsWith("/")) dir += "/";
    dir += "software/reactorModel/";
    String file = "chemkin/chem.inp";

    try {
      FileWriter fw = new FileWriter(file);
      fw.write(result.toString());
      fw.close();
    } catch (Exception e) {
      System.out.println("Error in writing chemkin input file chem.inp!");
      System.out.println(e.getMessage());
      System.exit(0);
    }

    // #]
  }
Ejemplo n.º 3
0
  // ## operation runReactor()
  public void runReactor() {
    // #[ operation runReactor()
    // run reactor
    String dir = System.getProperty("RMG.workingDirectory");

    try {
      // system call for reactor
      String[] command = {dir + "/software/reactorModel/reactor.exe"};
      File runningDir = new File("chemkin");
      Process reactor = Runtime.getRuntime().exec(command, null, runningDir);
      InputStream ips = reactor.getInputStream();
      InputStreamReader is = new InputStreamReader(ips);
      BufferedReader br = new BufferedReader(is);
      String line = null;
      while ((line = br.readLine()) != null) {
        // System.out.println(line);
      }
      int exitValue = reactor.waitFor();
    } catch (Exception e) {
      System.out.println("Error in running reactor!");
      System.out.println(e.getMessage());
      System.exit(0);
    }

    // #]
  }
Ejemplo n.º 4
0
  // ## operation checkChemkinMessage()
  public void checkChemkinMessage() {
    // #[ operation checkChemkinMessage()
    try {
      String dir = System.getProperty("RMG.workingDirectory");
      String filename = "chemkin/chem.message";
      FileReader fr = new FileReader(filename);
      BufferedReader br = new BufferedReader(fr);

      String line = br.readLine().trim();
      if (line.startsWith("NO ERRORS FOUND ON INPUT")) {
        return;
      } else if (line.startsWith("WARNING...THERE IS AN ERROR IN THE LINKING FILE")) {
        System.out.println("Error in chemkin linking to reactor!");
        System.exit(0);
      } else {
        System.out.println("Unknown message in chem.message!");
        System.exit(0);
      }
    } catch (Exception e) {
      System.out.println("Can't read chem.message!");
      System.out.println(e.getMessage());
      System.exit(0);
    }

    // #]
  }
Ejemplo n.º 5
0
  public static void main(String[] args) {
    try {
      // open existing file
      File xmlFile = new File(userFile);
      DocumentBuilderFactory dbfac = DocumentBuilderFactory.newInstance();
      DocumentBuilder dbuild = dbfac.newDocumentBuilder();
      Document doc = dbuild.parse(xmlFile);

      //			DocumentBuilderFactory dbfac2 = DocumentBuilderFactory.newInstance();
      //			DocumentBuilder docBuilder = dbfac2.newDocumentBuilder();
      //			Document doc2 = docBuilder.parse(xmlFile);
      //			doc.getDocumentElement().normalize();

    } catch (Exception e) {
      System.err.println(e.getMessage());
    }
  }
 public Command executeStep(Element stepRow) throws Exception {
   Command command = new Command();
   NodeList stepFields = stepRow.getElementsByTagName("td");
   String cmd = stepFields.item(0).getTextContent().trim();
   command.cmd = cmd;
   ArrayList<String> argList = new ArrayList<String>();
   if (stepFields.getLength() == 1) {
     // skip comments
     command.result = "OK";
     return command;
   }
   for (int i = 1; i < stepFields.getLength(); i++) {
     String content = stepFields.item(i).getTextContent();
     content = content.replaceAll(" +", " ");
     content = content.replace('\u00A0', ' ');
     content = content.trim();
     argList.add(content);
   }
   String args[] = argList.toArray(new String[0]);
   command.args = args;
   if (this.verbose) {
     System.out.println(cmd + " " + Arrays.asList(args));
   }
   try {
     command.result = this.commandProcessor.doCommand(cmd, args);
     command.error = false;
   } catch (Exception e) {
     command.result = e.getMessage();
     command.error = true;
   }
   command.failure = command.error && !cmd.startsWith("verify");
   if (this.verbose) {
     System.out.println(command.result);
   }
   return command;
 }
Ejemplo n.º 7
0
  /**
   * XML Circuit constructor
   *
   * @param file the file that contains the XML description of the circuit
   * @param g the graphics that will paint the node
   * @throws CircuitLoadingException if the internal circuit can not be loaded
   */
  public CircuitUI(File file, Graphics g) throws CircuitLoadingException {
    this("");

    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder;
    Document doc;
    Element root;

    Hashtable<Integer, Link> linkstable = new Hashtable<Integer, Link>();

    try {
      builder = factory.newDocumentBuilder();
      doc = builder.parse(file);
    } catch (SAXException sxe) {
      throw new CircuitLoadingException("SAX exception raised, invalid XML file.");
    } catch (ParserConfigurationException pce) {
      throw new CircuitLoadingException(
          "Parser exception raised, parser configuration is invalid.");
    } catch (IOException ioe) {
      throw new CircuitLoadingException("I/O exception, file cannot be loaded.");
    }

    root = (Element) doc.getElementsByTagName("Circuit").item(0);
    this.setName(root.getAttribute("name"));

    NodeList nl = root.getElementsByTagName("Node");
    Element e;
    Node n;
    Class cl;

    for (int i = 0; i < nl.getLength(); ++i) {
      e = (Element) nl.item(i);

      try {
        cl = Class.forName(e.getAttribute("class"));
      } catch (Exception exc) {
        System.err.println(exc.getMessage());
        throw new RuntimeException("Circuit creation from xml.");
      }

      try {
        n = ((Node) cl.newInstance());
      } catch (Exception exc) {
        System.err.println(exc.getMessage());
        throw new RuntimeException("Circuit creation from xml.");
      }

      this.nodes.add(n);
      n.setLocation(new Integer(e.getAttribute("x")), new Integer(e.getAttribute("y")));

      if (n instanceof giraffe.ui.Nameable) ((Nameable) n).setNodeName(e.getAttribute("node_name"));

      if (n instanceof giraffe.ui.CompositeNode) {
        try {
          ((CompositeNode) n)
              .load(new File(file.getParent() + "/" + e.getAttribute("file_name")), g);
        } catch (Exception exc) {
          /* try to load from the lib */
          ((CompositeNode) n)
              .load(new File(giraffe.Giraffe.PATH + "/lib/" + e.getAttribute("file_name")), g);
        }
      }

      NodeList nlist = e.getElementsByTagName("Anchor");
      Element el;

      for (int j = 0; j < nlist.getLength(); ++j) {
        el = (Element) nlist.item(j);

        Anchor a = n.getAnchor(new Integer(el.getAttribute("id")));
        NodeList linklist = el.getElementsByTagName("Link");
        Element link;
        Link l;

        for (int k = 0; k < linklist.getLength(); ++k) {
          link = (Element) linklist.item(k);
          int id = new Integer(link.getAttribute("id"));
          int index = new Integer(link.getAttribute("index"));

          if (id >= this.linkID) linkID = id + 1;

          if (linkstable.containsKey(id)) {
            l = linkstable.get(id);
            l.addLinkedAnchorAt(a, index);
            a.addLink(l);
          } else {
            l = new Link(id);
            l.addLinkedAnchorAt(a, index);
            this.links.add(l);
            linkstable.put(id, l);
            a.addLink(l);
          }
        }
      }
    }
  }
Ejemplo n.º 8
0
  // ## operation writeReactorInputFile(ReactionModel,ReactionTime,ReactionTime,SystemSnapshot)
  public boolean writeReactorInputFile(
      ReactionModel p_reactionModel,
      ReactionTime p_beginTime,
      ReactionTime p_endTime,
      SystemSnapshot p_beginStatus) {
    // #[ operation writeReactorInputFile(ReactionModel,ReactionTime,ReactionTime,SystemSnapshot)
    // construct "input" string
    String input = "<?xml version=\"1.0\" standalone=\"no\"?>" + "\n";

    String dir = System.getProperty("RMG.workingDirectory");
    if (!dir.endsWith("/")) dir += "/";
    String dtd = dir + "software/reactorModel/documentTypeDefinitions/reactorInput.dtd";
    input += "<!DOCTYPE reactorinput SYSTEM \"" + dtd + "\">" + "\n";

    input += "<reactorinput>" + "\n";
    input += "<header>" + "\n";
    input += "<title>Reactor Input File</title>" + "\n";
    input +=
        "<description>RMG-generated file used to call an external reactor model</description>"
            + "\n";
    input += "</header>" + "\n";
    input += "<inputvalues>" + "\n";
    input += "<integrationparameters>" + "\n";
    input += "<reactortype>" + reactorType + "</reactortype>" + "\n";
    input +=
        "<starttime units=\""
            + p_beginTime.getUnit()
            + "\">"
            + MathTool.formatDouble(p_beginTime.getTime(), 15, 6)
            + "</starttime>"
            + "\n";
    input +=
        "<endtime units=\""
            + p_endTime.getUnit()
            + "\">"
            + MathTool.formatDouble(p_endTime.getTime(), 15, 6)
            + "</endtime>"
            + "\n";
    //      input += "<starttime units=\"" + p_beginTime.unit + "\">" +
    // MathTool.formatDouble(p_beginTime.time,15,6) +  "</starttime>" + "\n";
    //      input += "<endtime units=\"" + p_endTime.unit + "\">" +
    // MathTool.formatDouble(p_endTime.time,15,6) +  "</endtime>" + "\n";
    input += "<rtol>" + rtol + "</rtol>" + "\n";
    input += "<atol>" + atol + "</atol>" + "\n";
    input += "</integrationparameters>" + "\n";
    input += "<chemistry>" + "\n";
    input += "</chemistry>" + "\n";
    input += "<systemstate>" + "\n";
    input +=
        "<temperature units=\"K\">"
            + MathTool.formatDouble(p_beginStatus.getTemperature().getK(), 15, 6)
            + "</temperature>"
            + "\n";
    input +=
        "<pressure units=\"Pa\">"
            + MathTool.formatDouble(p_beginStatus.getPressure().getPa(), 15, 6)
            + "</pressure>"
            + "\n";
    for (Iterator iter = p_beginStatus.getSpeciesStatus(); iter.hasNext(); ) {
      SpeciesStatus spcStatus = (SpeciesStatus) iter.next();
      Species thisSpecies = spcStatus.getSpecies();
      CoreEdgeReactionModel cerm = (CoreEdgeReactionModel) p_reactionModel;
      if (cerm.containsAsReactedSpecies(thisSpecies)) {
        String spcChemkinName = thisSpecies.getChemkinName();
        double concentration = spcStatus.getConcentration();
        input +=
            "<amount units=\"molPerCm3\" speciesid=\""
                + spcChemkinName
                + "\">"
                + concentration
                + "</amount>"
                + "\n";
      }
    }
    for (Iterator iter = p_beginStatus.getInertGas(); iter.hasNext(); ) {
      String name = (String) iter.next();
      double conc = p_beginStatus.getInertGas(name);
      if (conc != 0.0)
        input +=
            "<amount units=\"molPerCm3\" speciesid=\"" + name + "\">" + conc + "</amount>" + "\n";
    }
    input += "</systemstate>" + "\n";
    input += "</inputvalues>" + "\n";
    input += "</reactorinput>" + "\n";

    // write "input" string to file
    try {
      String file = "chemkin/reactorInput.xml";
      FileWriter fw = new FileWriter(file);
      fw.write(input);
      fw.close();
      return true;
    } catch (Exception e) {
      System.out.println("Error in writing reactorInput.xml!");
      System.out.println(e.getMessage());
      return false;
    }

    // #]
  }
Ejemplo n.º 9
0
  // ## operation readReactorOutputFile(ReactionModel)
  public SystemSnapshot readReactorOutputFile(ReactionModel p_reactionModel) {
    // #[ operation readReactorOutputFile(ReactionModel)
    try {
      // open output file and build the DOM tree
      String dir = System.getProperty("RMG.workingDirectory");
      String filename = "chemkin/reactorOutput.xml";
      File inputFile = new File(filename);

      DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
      factory.setValidating(true); // validate the document with the DTD
      factory.setIgnoringElementContentWhitespace(true); // ignore whitespace
      DocumentBuilder builder = factory.newDocumentBuilder();
      Document doc = builder.parse(inputFile);

      // get root element and its children
      Element root = doc.getDocumentElement();
      NodeList rootchildren = root.getChildNodes();

      // header is rootchildren.item(0)

      // get return message and check for successful run
      Element returnmessageElement = (Element) rootchildren.item(1);
      Text returnmessageText = (Text) returnmessageElement.getFirstChild();
      String returnmessage = returnmessageText.toString();
      returnmessage = returnmessage.trim();
      if (!returnmessage.contains("SUCCESSFULLY COMPLETED RUN.")) {
        System.out.println("External reactor model failed!");
        System.out.println("Reactor model error message: " + returnmessage);
        System.exit(0);
      }

      // get outputvalues element and its children
      Element outputvaluesElement = (Element) rootchildren.item(2);
      NodeList children = outputvaluesElement.getChildNodes();

      // get time
      Element timeElement = (Element) children.item(0);
      Text timeText = (Text) timeElement.getFirstChild();
      double time = Double.parseDouble(timeText.getData());
      String timeUnits = timeElement.getAttribute("units");

      // get systemstate element and its children
      Element systemstateElement = (Element) children.item(1);
      NodeList states = systemstateElement.getChildNodes();

      // get temperature and its units
      Element temperatureElement = (Element) states.item(0);
      String tempUnits = temperatureElement.getAttribute("units");
      Text temperatureText = (Text) temperatureElement.getFirstChild();
      double temp = Double.parseDouble(temperatureText.getData());
      Temperature T = new Temperature(temp, tempUnits);

      // get pressure and its units
      Element pressureElement = (Element) states.item(1);
      String presUnits = pressureElement.getAttribute("units");
      Text pressureText = (Text) pressureElement.getFirstChild();
      double pres = Double.parseDouble(pressureText.getData());
      Pressure P = new Pressure(pres, presUnits);

      // get species amounts (e.g. concentrations)
      ArrayList speciesIDs = new ArrayList();
      ArrayList amounts = new ArrayList();
      ArrayList fluxes = new ArrayList();
      String amountUnits = null;
      String fluxUnits = null;

      // loop thru all the species
      // begin at i=2, since T and P take already the first two position of states
      int nSpe = (states.getLength() - 2) / 2;
      int index = 0;
      LinkedHashMap inertGas = new LinkedHashMap();
      for (int i = 2; i < nSpe + 2; i++) {
        // get amount element and the units
        Element amountElement = (Element) states.item(i);
        amountUnits = amountElement.getAttribute("units");

        Element fluxElement = (Element) states.item(i + nSpe);
        fluxUnits = fluxElement.getAttribute("units");

        // get speciesid and store in an array list
        String thisSpeciesID = amountElement.getAttribute("speciesid");

        // get amount (e.g. concentraion) and store in an array list
        Text amountText = (Text) amountElement.getFirstChild();
        double thisAmount = Double.parseDouble(amountText.getData());
        if (thisAmount < 0) {
          double aTol = ReactionModelGenerator.getAtol();
          // if (Math.abs(thisAmount) < aTol) thisAmount = 0;
          // else throw new NegativeConcentrationException("Negative concentration in
          // reactorOutput.xml: " + thisSpeciesID);
          if (thisAmount < -100.0 * aTol)
            throw new NegativeConcentrationException(
                "Species "
                    + thisSpeciesID
                    + " has negative concentration: "
                    + String.valueOf(thisAmount));
        }

        // get amount (e.g. concentraion) and store in an array list
        Text fluxText = (Text) fluxElement.getFirstChild();
        double thisFlux = Double.parseDouble(fluxText.getData());

        if (thisSpeciesID.compareToIgnoreCase("N2") == 0
            || thisSpeciesID.compareToIgnoreCase("Ne") == 0
            || thisSpeciesID.compareToIgnoreCase("Ar") == 0) {
          inertGas.put(thisSpeciesID, new Double(thisAmount));
        } else {
          speciesIDs.add(index, thisSpeciesID);
          amounts.add(index, new Double(thisAmount));
          fluxes.add(index, new Double(thisFlux));
          index++;
        }
      }

      // print results for debugging purposes
      /**
       * System.out.println(returnmessage); System.out.println("Temp = " + temp + " " + tempUnits);
       * System.out.println("Pres = " + pres + " " + presUnits); for (int i = 0; i < amounts.size();
       * i++) { System.out.println(speciesIDs.get(i) + " " + amounts.get(i) + " " + amountUnits); }
       */
      ReactionTime rt = new ReactionTime(time, timeUnits);
      LinkedHashMap speStatus = generateSpeciesStatus(p_reactionModel, speciesIDs, amounts, fluxes);
      SystemSnapshot ss = new SystemSnapshot(rt, speStatus, T, P);
      ss.inertGas = inertGas;
      return ss;
    } catch (Exception e) {
      System.out.println("Error reading reactor model output: " + e.getMessage());
      System.exit(0);
      return null;
    }

    // #]
  }
Ejemplo n.º 10
0
  public void doGet(HttpServletRequest request, HttpServletResponse response)
      throws IOException, ServletException {

    try {

      response.setHeader("Cache-Control", "no-cache");
      response.setCharacterEncoding("UTF-8");

      String task = request.getParameter("task");

      Element data = null;

      // process help request
      if (request.getParameter("help") != null) data = getDescription(task);

      // redirect to home page if there is no task
      if (data == null && task == null) {
        response.setContentType("text/html");
        response
            .getWriter()
            .append(
                "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\"><html><head><meta http-equiv=\"REFRESH\" content=\"0;url="
                    + context.getInitParameter("server_path")
                    + "></head><body></body></html>");
        return;
      }

      // process definition request
      if (data == null && task.equals("define")) {
        int id = resolveIntegerArg(request.getParameter("id"), -1);
        int length = resolveIntegerArg(request.getParameter("length"), definer.getDefaultLength());
        int format = resolveIntegerArg(request.getParameter("format"), definer.getDefaultFormat());
        int maxImageWidth =
            resolveIntegerArg(
                request.getParameter("maxImageWidth"), definer.getDefaultMaxImageWidth());
        int maxImageHeight =
            resolveIntegerArg(
                request.getParameter("maxImageHeight"), definer.getDefaultMaxImageHeight());
        int linkDestination =
            resolveIntegerArg(
                request.getParameter("linkDestination"), definer.getDefaultLinkDestination());
        boolean getImages = resolveBooleanArg(request.getParameter("getImages"), false);

        data =
            definer.getDefinition(
                id, length, format, linkDestination, getImages, maxImageWidth, maxImageHeight);
      }

      // all of the remaining tasks require data to be cached, so lets make sure that is finished
      // before continuing.
      if (!cachingThread.isOk()) throw new ServletException("Could not cache wikipedia data");

      double progress = cachingThread.getProgress();
      if (data == null && (progress < 1 || task.equals("progress"))) {
        // still caching up data, not ready to return a response yet.

        data = doc.createElement("loading");
        data.setAttribute("progress", df.format(progress));
        task = "loading";
      }

      // process search request
      if (data == null && task.equals("search")) {
        String term = request.getParameter("term");
        String id = request.getParameter("id");
        int linkLimit =
            resolveIntegerArg(request.getParameter("linkLimit"), searcher.getDefaultMaxLinkCount());
        int senseLimit =
            resolveIntegerArg(
                request.getParameter("senseLimit"), searcher.getDefaultMaxSenseCount());

        if (id == null) data = searcher.doSearch(term, linkLimit, senseLimit);
        else data = searcher.doSearch(Integer.parseInt(id), linkLimit);
      }

      // process compare request
      if (data == null && task.equals("compare")) {
        String term1 = request.getParameter("term1");
        String term2 = request.getParameter("term2");
        int linkLimit =
            resolveIntegerArg(request.getParameter("linkLimit"), comparer.getDefaultMaxLinkCount());
        boolean details =
            resolveBooleanArg(request.getParameter("details"), comparer.getDefaultShowDetails());

        data = comparer.getRelatedness(term1, term2, details, linkLimit);
      }

      // process wikify request
      if (data == null && task.equals("wikify")) {

        if (this.wikifier == null)
          throw new ServletException(
              "Wikifier is not available. You must configure the servlet so that it has access to link detection and disambiguation models.");

        String source = request.getParameter("source");
        int sourceMode =
            resolveIntegerArg(request.getParameter("sourceMode"), Wikifier.SOURCE_AUTODETECT);
        String linkColor = request.getParameter("linkColor");
        String baseColor = request.getParameter("baseColor");
        double minProb =
            resolveDoubleArg(
                request.getParameter("minProbability"), wikifier.getDefaultMinProbability());
        int repeatMode =
            resolveIntegerArg(request.getParameter("repeatMode"), wikifier.getDefaultRepeatMode());
        boolean showTooltips =
            resolveBooleanArg(
                request.getParameter("showTooltips"), wikifier.getDefaultShowTooltips());
        String bannedTopics = request.getParameter("bannedTopics");

        boolean wrapInXml = resolveBooleanArg(request.getParameter("wrapInXml"), true);

        if (wrapInXml) {
          data =
              wikifier.wikifyAndWrapInXML(
                  source,
                  sourceMode,
                  minProb,
                  repeatMode,
                  bannedTopics,
                  baseColor,
                  linkColor,
                  showTooltips);
        } else {
          response.setContentType("text/html");
          response
              .getWriter()
              .append(
                  wikifier.wikify(
                      source,
                      sourceMode,
                      minProb,
                      repeatMode,
                      bannedTopics,
                      baseColor,
                      linkColor,
                      showTooltips));
          return;
        }
      }

      if (data == null) throw new Exception("Unknown Task");

      // wrap data
      Element wrapper = doc.createElement("WikipediaMinerResponse");
      wrapper.setAttribute("server_path", context.getInitParameter("server_path"));
      wrapper.setAttribute("service_name", context.getInitParameter("service_name"));
      wrapper.appendChild(data);

      data = wrapper;

      // Transform or serialize xml data as appropriate

      Transformer tf = null;

      if (request.getParameter("xml") == null) {
        // we need to transform the data into html
        tf = transformersByName.get(task);

        if (request.getParameter("help") != null) tf = transformersByName.get("help");
      }

      if (tf == null) {
        // we need to serialize the data as xml
        tf = transformersByName.get("serializer");
        response.setContentType("application/xml");
      } else {
        // output will be transformed to html
        response.setContentType("text/html");
        response
            .getWriter()
            .append(
                "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">\n");
      }

      tf.transform(new DOMSource(data), new StreamResult(response.getWriter()));

    } catch (Exception error) {
      response.reset();
      response.setContentType("application/xml");
      response.setHeader("Cache-Control", "no-cache");
      response.setCharacterEncoding("UTF8");

      Element xmlError = doc.createElement("Error");
      if (error.getMessage() != null) xmlError.setAttribute("message", error.getMessage());

      Element xmlStackTrace = doc.createElement("StackTrace");
      xmlError.appendChild(xmlStackTrace);

      for (StackTraceElement ste : error.getStackTrace()) {

        Element xmlSte = doc.createElement("StackTraceElement");
        xmlSte.setAttribute("message", ste.toString());
        xmlStackTrace.appendChild(xmlSte);
      }
      try {
        transformersByName
            .get("serializer")
            .transform(new DOMSource(xmlError), new StreamResult(response.getWriter()));
      } catch (Exception e) {
        // TODO: something for when an error is thrown processing an error????

      }
      ;
    }
  }