public boolean validateParameters(
      List<ReportParameterMap> reportParameters, Map<String, Object> parameters)
      throws ProviderException {
    parameters = new SingleValueMap(parameters);

    if (reportParameters != null && reportParameters.size() > 0) {
      Iterator<ReportParameterMap> iterator = reportParameters.iterator();
      while (iterator.hasNext()) {
        ReportParameterMap rpMap = iterator.next();

        ReportParameter param = rpMap.getReportParameter();

        if (!parameters.containsKey(param.getName()) && rpMap.isRequired()) {
          throw new ProviderException(LocalStrings.ERROR_PARAMETER_REQUIRED);
        }

        if (param.getType().equals(ReportParameter.TEXT_PARAM)
            || param.getType().equals(ReportParameter.DATE_PARAM)) {
          String value = (String) parameters.get(param.getName());

          if (value != null && value.length() > 0) {
            try {
              validateParameter(param, value);
            } catch (Exception e) {
              throw new ProviderException(e.getMessage());
            }
          } else if (rpMap.isRequired()) {
            throw new ProviderException(LocalStrings.ERROR_PARAMETER_REQUIRED);
          }
        }
      }
    }

    return true;
  }
  protected Object parseParameter(ReportParameter parameter, String value)
      throws ProviderException {
    try {
      if (parameter.getClassName().equals("java.lang.String")) {
        return value;
      } else if (parameter.getClassName().equals("java.lang.Double")) {
        return new Double(value);
      } else if (parameter.getClassName().equals("java.lang.Integer")) {
        return new Integer(value);
      } else if (parameter.getClassName().equals("java.lang.Long")) {
        return new Long(value);
      } else if (parameter.getClassName().equals("java.math.BigDecimal")) {
        return new BigDecimal(value);
      } else if (parameter.getClassName().equals("java.util.Date")) {
        return dateProvider.parseDate(value);
      } else if (parameter.getClassName().equals("java.sql.Date")) {
        return dateProvider.parseDate(value);
      } else if (parameter.getClassName().equals("java.sql.Timestamp")) {
        long time = dateProvider.parseDate(value).getTime();
        return new Timestamp(time);
      } else if (parameter.getClassName().equals("java.lang.Boolean")) {
        return new Boolean(value);
      }
    } catch (Exception e) {
      throw new ProviderException(parameter.getName() + " Invalid: " + e.getMessage());
    }

    throw new ProviderException(parameter.getName() + " currently unsupported!");
  }
  public void loadReportParameterValues(
      List<ReportParameterMap> reportParameters, Map<String, Object> parameters)
      throws ProviderException {
    for (int i = 0; i < reportParameters.size(); i++) {
      ReportParameterMap rpMap = reportParameters.get(i);
      ReportParameter rp = rpMap.getReportParameter();

      try {
        if (rp.getType().equals(ReportParameter.LIST_PARAM)
            || rp.getType().equals(ReportParameter.QUERY_PARAM)
            || rp.getType().equals(ReportParameter.BOOLEAN_PARAM)) {
          if (rp.getValues() == null) // only load once...
          {
            log.debug("loading parameter values: " + rp.getName());
            rp.setValues(getParamValues(rp, parameters));
          }
        }
      } catch (Exception e) {
        log.error("Error loading parameter values: " + rp.getName());
        throw new ProviderException("loadReportParameterValues: " + e.getMessage());
      }
    }
  }
  public ReportParameterValue[] getParamValues(
      ReportParameter reportParameter, Map<String, Object> parameters) throws ProviderException {
    if (reportParameter.getType().equals(ReportParameter.QUERY_PARAM)) {
      return getParamValuesFromDataSource(reportParameter, parameters);
    } else if (reportParameter.getType().equals(ReportParameter.LIST_PARAM)) {
      return parseListValues(reportParameter);
    } else if (reportParameter.getType().equals(ReportParameter.BOOLEAN_PARAM)) {
      // default to Yes/No
      if (reportParameter.getData() == null || reportParameter.getData().indexOf("|") == -1) {
        reportParameter.setData("true:Yes|false:No");
      }

      return parseListValues(reportParameter);
    }

    throw new ProviderException(
        reportParameter.getName()
            + ": param-type "
            + reportParameter.getType()
            + " not supported!");
  }
  @RequestMapping(value = "developReport/generate", method = RequestMethod.POST)
  public ModelAndView generateReport(
      @RequestParam(value = L_TEMPLATE) final String template,
      @RequestParam(value = "type") final String type,
      @RequestParam(value = L_LOCALE) final String locale,
      final HttpServletRequest request,
      final HttpServletResponse response) {
    if (!showReportDevelopment) {
      return new ModelAndView(new RedirectView("/"));
    }

    List<ReportParameter> params = null;

    try {
      params = getReportParameters(template);
    } catch (Exception e) {
      LOG.error(e.getMessage(), e);
      return showException(L_QCADOO_REPORT_REPORT, e)
          .addObject(L_TEMPLATE, template)
          .addObject("isParameter", true)
          .addObject(L_LOCALE, locale);
    }

    try {
      ReportType reportType = ReportType.valueOf(type.toUpperCase(Locale.ENGLISH));
      Locale reportLocale = new Locale(locale);

      Map<String, Object> parameters = new HashMap<String, Object>();

      for (ReportParameter param : params) {
        param.setValue(request.getParameter("params[" + param.getName() + "]"));
        parameters.put(param.getName(), param.getRawValue());
      }

      byte[] report = reportService.generateReport(template, reportType, parameters, reportLocale);

      response.setContentLength(report.length);
      response.setContentType(reportType.getMimeType());
      response.setHeader("Content-disposition", "attachment; filename=report." + type);
      response.addHeader("Expires", "Tue, 03 Jul 2001 06:00:00 GMT");
      response.addHeader("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0");
      response.addHeader("Cache-Control", "post-check=0, pre-check=0");
      response.addHeader("Pragma", "no-cache");

      OutputStream out = response.getOutputStream();

      try {
        IOUtils.copy(new ByteArrayInputStream(report), out);
      } catch (IOException e) {
        LOG.error(e.getMessage(), e);
        throw new ReportException(ReportException.Type.ERROR_WHILE_COPYING_REPORT_TO_RESPONSE, e);
      }

      out.flush();

      return null;
    } catch (Exception e) {
      LOG.error(e.getMessage(), e);
      return showException(L_QCADOO_REPORT_REPORT, e)
          .addObject(L_TEMPLATE, template)
          .addObject("isParameter", true)
          .addObject(L_PARAMS, params)
          .addObject(L_LOCALE, locale);
    }
  }
  public Map<String, Object> getReportParametersMap(
      List<ReportParameterMap> reportParameters, Map<String, Object> origParameters)
      throws ProviderException {
    Map<String, Object> map = new HashMap<String, Object>();

    // if multiple selections, use origParameters; otherwise, use
    // parameters
    Map<String, Object> parameters = new SingleValueMap(origParameters);

    Iterator<ReportParameterMap> iterator = reportParameters.iterator();
    while (iterator.hasNext()) {
      ReportParameterMap rpMap = iterator.next();

      ReportParameter reportParameter = rpMap.getReportParameter();

      // if we are expecting multiple selections, convert the array of
      // parameters
      // into a comma-delimited string so that it can be used in the SQL
      // where
      // clause. Otherwise, just expect a simple String
      if (reportParameter.isMultipleSelect()) {
        Object[] values = (String[]) origParameters.get(reportParameter.getName());

        // load up the StringBuffer with the multiple selections.
        String s = buildMultipleSelectString(reportParameter, values);

        // save the parameter into the Map
        if (rpMap.isRequired() || s.length() > 0) {
          map.put(reportParameter.getName(), s);

          log.debug(reportParameter.getName() + " => " + map.get(reportParameter.getName()));
        }
      } else {
        String value = (String) parameters.get(reportParameter.getName());

        if (value != null) {
          try {
            Object object = parseParameter(reportParameter, value);

            if (rpMap.isRequired() || value.length() > 0) {
              map.put(reportParameter.getName(), object);
            }
          } catch (Exception e) {
            log.warn(
                "Error setting parameter: " + reportParameter.getName() + " : " + e.getMessage());
          }
        }
      }
    }

    // always pass drilldown chart parameter to reports if it exists

    String value = (String) parameters.get(ReportChart.DRILLDOWN_PARAMETER);

    if (value != null)
      map.put(ReportChart.DRILLDOWN_PARAMETER, parameters.get(ReportChart.DRILLDOWN_PARAMETER));

    //

    return map;
  }