public IDbOrderedQueryable <T> OrderByDescending <T, TKey>(IDbQueryable <T> source, Expression <Func <T, TKey> > keySelector)
{
CheckTableInfo <T>();
var res = new IDbOrderedQueryable <T>()
{
_db = this
};
res.LDBTree = source.LDBTree;
var par = keySelector.Parameters.First();
var name = SharedUtils.GetPropertyName(keySelector.Body.ToString());
var table_info = GetTableInfo(typeof(T).Name);
res.LDBTree.OrderingInfo = new OrderingInfo();
res.LDBTree.OrderingInfo.Orderings = new List <OrderByInfo>();
res.LDBTree.OrderingInfo.Orderings.Add(new OrderByInfo()
{
TableNumber = table_info.TableNumber,
ColumnNumber = table_info.ColumnNumbers[name],
ColumnType = table_info.Columns[name],
IsDescending = true,
ColumnName = name
});
return(res);
}
public IDbOrderedQueryable <T> Take <T>(IDbOrderedQueryable <T> source, int count)
{
source.LDBTree.OrderingInfo.Take = count;
return(source);
}