indexer.writeIndex();
  }

  private void runIndexing(final Indexer indexer)
  {
    for (final FileSet fileSet : fileSets)
    {
      final DirectoryScanner scanner = new DirectoryScanner();
      final File baseDir = calcBasedir(fileSet);
      scanner.setBasedir(baseDir);
      final List<String> includes = fileSet.getIncludes();
      if (includes != null && !includes.isEmpty())
      {
        scanner.setIncludes(includes.toArray(new String[includes.size()]));
      }
      final List<String> excludes = fileSet.getExcludes();
      if (excludes != null && !excludes.isEmpty())
      {
        scanner.setExcludes(excludes.toArray(new String[excludes.size()]));
      }
      runIndexing(indexer, scanner);
    }
  }

  private File calcBasedir(final FileSet fileSet)
  {
    final String directory = fileSet.getDirectory();
    if (StringUtils.isBlank(directory))
    {
      return outputDirectory;
    }
    return new File(directory);
  }

  private void runIndexing(final Indexer indexer, final DirectoryScanner scanner)
  {
    scanner.scan();

    for (final String dirName : scanner.getIncludedDirectories())