code: public String[] getDistinctEventLogEventSources() throws SQLException {
          String sql = "select distinct EVENT_SOURCE from EVENT_LOG";
          List<String> retList = new ArrayList<String>();
          ResultSet rs = db.runSelect(sql.toString());
          while (rs.next()) {
              String evName = rs.getString(1);
              retList.add(evName);
          }
          return retList.toArray(new String[retList.size()]);
      }
docs: Method that returns distinct event log sources
  @return String[]