public static IOrderedSpecificationBuilder <T> OrderByDescending <T>(
this ISpecificationBuilder <T> specificationBuilder,
Expression <Func <T, object?> > orderExpression)
{
((List <(Expression <Func <T, object?> > OrderExpression, OrderTypeEnum OrderType)>)specificationBuilder.Specification.OrderExpressions)
.Add((orderExpression, OrderTypeEnum.OrderByDescending));
var orderedSpecificationBuilder = new OrderedSpecificationBuilder <T>(specificationBuilder.Specification);
return(orderedSpecificationBuilder);
}
/// <summary>
/// Specify the query result will be ordered by <paramref name="orderExpression"/> in a descending order
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="specificationBuilder"></param>
/// <param name="orderExpression"></param>
/// <param name="condition">If false, the expression won't be added. The whole Order chain will be discarded.</param>
public static IOrderedSpecificationBuilder <T> OrderByDescending <T>(
this ISpecificationBuilder <T> specificationBuilder,
Expression <Func <T, object?> > orderExpression,
bool condition)
{
if (condition)
{
((List <OrderExpressionInfo <T> >)specificationBuilder.Specification.OrderExpressions).Add(new OrderExpressionInfo <T>(orderExpression, OrderTypeEnum.OrderByDescending));
}
var orderedSpecificationBuilder = new OrderedSpecificationBuilder <T>(specificationBuilder.Specification, !condition);
return(orderedSpecificationBuilder);
}
