code: private void _buildParameter(
                      final Object value,
                      final StringBuilder stmt,
                      final List<Object> params
                      )
      {
          params.add( value );
          stmt.append( _PARAM_SIGN_ ).append( params.size() );
      }
docs: Appends a query parameter to the statement for the specified value
  and appends the value to the parameter list.
  The parameter is the form of "$i", where i is the position in the list.