code: @Override
  	public PreparedStatement doPreparedStatement(final SqlContext sqlContext, final PreparedStatement preparedStatement)
  			throws SQLException {
  		if (getFilters().isEmpty()) {
  			return preparedStatement;
  		}
  		PreparedStatement ps = preparedStatement;
  		for (final SqlFilter filter : getFilters()) {
  			ps = filter.doPreparedStatement(sqlContext, ps);
  		}
  		return ps;
  	}
docs: {@inheritDoc}
  
  @see jp.co.future.uroborosql.filter.SqlFilter#doPreparedStatement(jp.co.future.uroborosql.context.SqlContext, java.sql.PreparedStatement)