/// <summary>
/// 初始化一个<see cref="OrderByItem"/>类型的实例
/// </summary>
/// <param name="order">排序列</param>
/// <param name="desc">是否降序</param>
/// <param name="type">实体类型</param>
/// <param name="raw">是否使用原始值</param>
/// <param name="prefix">前缀</param>
public OrderByItem(string order, bool desc = false, Type type = null, bool raw = false, string prefix = null)
{
Order = order.SafeString();
Desc = desc;
Type = type;
Raw = raw;
if (raw)
{
return;
}
Order = Order.RemoveEnd("asc");
if (Order.ToLower().EndsWith("desc"))
{
Desc = true;
Order = Order.RemoveEnd("desc");
}
var item = new NameItem(Order);
Column = item.Name;
Prefix = string.IsNullOrWhiteSpace(item.Prefix) ? prefix : item.Prefix;
}