/// <summary>
/// Updates the row number.
/// </summary>
/// <param name="rowNumber">The row number.</param>
/// <param name="orderBy">The order by.</param>
/// <returns></returns>
protected RowNumberExpression UpdateRowNumber(RowNumberExpression rowNumber, IEnumerable <OrderExpression> orderBy)
{
if (orderBy != rowNumber.OrderBy)
{
return(new RowNumberExpression(orderBy));
}
return(rowNumber);
}
/// <summary>
/// Compares the row number.
/// </summary>
/// <param name="a">A.</param>
/// <param name="b">The b.</param>
/// <returns></returns>
protected virtual bool CompareRowNumber(RowNumberExpression a, RowNumberExpression b)
{
return(this.CompareOrderList(a.OrderBy, b.OrderBy));
}
/// <summary>
/// Visits the row number.
/// </summary>
/// <param name="rowNumber">The row number.</param>
/// <returns></returns>
protected virtual Expression VisitRowNumber(RowNumberExpression rowNumber)
{
var orderby = this.VisitOrderBy(rowNumber.OrderBy);
return(this.UpdateRowNumber(rowNumber, orderby));
}
