public static String postExecute(
      IRuntimeContext runtime,
      boolean debugMessages,
      boolean doWrapper,
      IOutputHandler outputHandler,
      Map<String, IParameterProvider> parameterProviders,
      HttpServletRequest request,
      HttpServletResponse response,
      List<?> messages,
      boolean deleteGeneratedFiles)
      throws Exception {
    StringBuffer buffer = new StringBuffer();

    boolean hasResponse = outputHandler.isResponseExpected();
    IContentItem responseContentItem =
        outputHandler.getOutputContentItem(
            IOutputHandler.RESPONSE, IOutputHandler.CONTENT, null, null);

    boolean success =
        (runtime != null && runtime.getStatus() == IRuntimeContext.RUNTIME_STATUS_SUCCESS);
    boolean printSuccess = (runtime != null) && success && (!hasResponse || debugMessages);
    boolean printError = (runtime != null) && !success && !response.isCommitted();

    if (printSuccess || printError) {
      final String htmlMimeType = "text/html"; // $NON-NLS-1$
      responseContentItem.setMimeType(htmlMimeType);
      response.setContentType(htmlMimeType);
      IMessageFormatter formatter =
          PentahoSystem.get(IMessageFormatter.class, PentahoSessionHolder.getSession());

      if (printSuccess) {
        formatter.formatSuccessMessage(htmlMimeType, runtime, buffer, debugMessages, doWrapper);
      } else {
        response.resetBuffer();
        formatter.formatFailureMessage(htmlMimeType, runtime, buffer, messages);
      }
    }
    // clear files which was generated during action execution
    // http://jira.pentaho.com/browse/BISERVER-12639
    IUnifiedRepository unifiedRepository = PentahoSystem.get(IUnifiedRepository.class, null);
    if (unifiedRepository != null) {
      for (IContentItem contentItem : runtime.getOutputContentItems()) {
        if (contentItem != null) {
          try {
            contentItem.closeOutputStream();
            if (deleteGeneratedFiles) {
              deleteContentItem(contentItem, unifiedRepository);
            }
          } catch (Exception e) {
            logger.warn(
                Messages.getInstance()
                    .getString("XactionUtil.CANNOT_REMOVE_OUTPUT_FILE", contentItem.getPath()),
                e);
          }
        }
      }
    }
    return buffer.toString();
  }
 static void deleteContentItem(IContentItem contentItem, IUnifiedRepository unifiedRepository) {
   if (contentItem instanceof RepositoryFileContentItem) {
     String path = contentItem.getPath();
     RepositoryFile repositoryFile = unifiedRepository.getFile(path);
     // repositoryFile can be null if we have not access or file does not exist
     if (repositoryFile != null) {
       unifiedRepository.deleteFile(repositoryFile.getId(), true, null);
     }
   } else if (contentItem instanceof FileContentItem) {
     // Files in the file system must not be deleted here
     String path = ((FileContentItem) contentItem).getFile().getName();
     logger.warn(Messages.getInstance().getString("XactionUtil.SKIP_REMOVING_OUTPUT_FILE", path));
   }
 }