BaseSearcher.cs

  /// <summary>
  /// Parse the givven query string to a Lucene Query object
  /// </summary>
  /// <param name="searchQuery">The query string</param>
  /// <param name="parser">The Lucense QueryParser</param>
  /// <returns>A Lucene Query object</returns>
  private Query ParseQuery(string searchQuery, QueryParser parser)
  {
      parser.AllowLeadingWildcard = true;
      Query q;
      try
      {
          q = parser.Parse(searchQuery);
      }

      catch (ParseException e)
      {
          Log.Error("Query parser exception", e);
          q = null;
      }

      if (q == null || string.IsNullOrEmpty(q.ToString()))
      {
          string cooked = Regex.Replace(searchQuery, @"[^\w\.@-]", " ");
          q = parser.Parse(cooked);
      }
      Log.DebugFormat("Parsed query for Lucene: \"{0}\"", q);

      return q;
  }