private IReadOnlyList <DbExpressionSort> GetOrderBy(Identity parentIdentity)
{
Debug.Assert(parentIdentity != null);
var orderByListCount = OrderByList == null ? 0 : OrderByList.Count;
var result = new DbExpressionSort[orderByListCount + 1];
result[0] = GetDbExpressionSort(parentIdentity);
for (int i = 0; i < orderByListCount; i++)
{
result[i + 1] = OrderByList[i];
}
return(result);
}
private IList <DbExpressionSort> EliminateSubQuery(IList <ColumnSort> orderByList)
{
if (orderByList == null)
{
return(null);
}
var result = new DbExpressionSort[orderByList.Count];
for (int i = 0; i < orderByList.Count; i++)
{
var orderBy = orderByList[i];
result[i] = new DbExpressionSort(EliminateSubQuery(orderBy.Column.DbExpression), orderBy.Direction);
}
return(result);
}
