/// <summary>
/// Accepts the specified <paramref name="visitor"/> and dispatches calls to the specific visitor
/// methods for this object.
/// </summary>
/// <param name="sortOrder">
/// The <see cref="SqlSortOrder"/> on which to accept the visitor.
/// </param>
/// <param name="visitor">
/// The <see cref="ISqlVisitor" /> to visit this object with.
/// </param>
public static void Accept(this SqlSortOrder sortOrder, ISqlVisitor visitor)
{
if (visitor == null)
{
throw new ArgumentNullException(nameof(visitor));
}
visitor.Visit(sortOrder);
}
internal SqlSort(SqlColumn column, SqlSortOrder sortOrder)
{
if (column == null)
{
throw new ArgumentNullException(nameof(column));
}
Column = column;
SortOrder = sortOrder;
}
/// <summary>
/// Writes the specified sort order to the output stream.
/// </summary>
/// <param name="sortOrder">
/// The sort order to write to the output stream.
/// </param>
public void WriteSortOrder(SqlSortOrder sortOrder)
{
EnsureNotDisposed();
switch (sortOrder)
{
case SqlSortOrder.Ascending:
if (Settings.WriteAscendingSortOrder)
{
WriteKeyword(SqlKeywords.Ascending);
}
break;
case SqlSortOrder.Descending:
WriteKeyword(SqlKeywords.Descending);
break;
default:
#if (NET452 || NET461)
throw new System.ComponentModel.InvalidEnumArgumentException(nameof(sortOrder), (int)sortOrder, typeof(SqlSortOrder));
#else
throw new ArgumentException($"The value of argument '{nameof(sortOrder)}' ({(int)sortOrder}) is invalid for Enum type '{nameof(SqlSortOrder)}'.");
#endif
}
}
/// <summary>
/// Visits the specified <see cref="SqlSortOrder"/>.
/// </summary>
/// <param name="sortOrder">
/// The <see cref="SqlSortOrder"/> to visit.
/// </param>
public virtual void Visit(SqlSortOrder sortOrder)
{
}
public override void Visit(SqlSortOrder sortOrder)
{
_writer.WriteSortOrder(sortOrder);
}
public OrderByClause(SqlSelect parent, SqlColumn column, SqlSortOrder sortOrder)
: base(parent)
{
OrderBy(column, sortOrder);
}
/// <summary>
/// Visits the specified <see cref="SqlSortOrder"/>.
/// </summary>
/// <param name="sortOrder">
/// The <see cref="SqlSortOrder"/> to visit.
/// </param>
public virtual void Visit(SqlSortOrder sortOrder)
{
}