docs: public void compareFilter(String ElementName, String value, int oper) throws DBException
      {
          // Delete the old search filter
          m_filter = null;
          // If this is not a binary operator, throw an exception
          if ((oper & BINARY_OPER_MASK) == 0)
          {
              throw new DBException();
              // Create a SearchBaseLeafComparison node and store it as the filter
          }
          m_filter = new SearchBaseLeafComparison(ElementName, oper, value);
      }