public static ISpecificationWithOrdering <T> ThenByDescending <T>(
this ISpecificationWithOrdering <T> specification,
Expression <Func <T, object> > keySelector)
{
return(specification
.ThenBy(OrderingDirection.Descending, keySelector));
}
public static ISpecificationWithOrdering <T> TakePage <T>(
this ISpecificationWithOrdering <T> specification,
int pageNumber,
int pageSize)
{
return(specification
.TakePage(new PaginationExpression(pageSize, pageNumber)));
}
public static ISpecification <T> WithNoOrder <T>(
this ISpecificationWithOrdering <T> specification)
{
return(new Specification <T>
(
criteria: specification.Criteria,
groupBy: specification.GroupBy,
takePage: specification.TakePage
));
}
public static ISpecificationWithOrdering <T> WhereAny <T>(
this ISpecificationWithOrdering <T> specification)
{
return(new SpecificationWithOrdering <T>
(
criteria: null,
groupBy: specification.GroupBy,
orderBy: specification.OrderBy,
takePage: specification.TakePage
));
}
public static ISpecificationWithOrdering <T> GroupBy <T>(
this ISpecificationWithOrdering <T> specification,
Expression <Func <T, object> > keySelector)
{
return(new SpecificationWithOrdering <T>
(
criteria: specification.Criteria,
groupBy: keySelector,
orderBy: specification.OrderBy,
takePage: specification.TakePage
));
}
public static ISpecificationWithOrdering <T> Where <T>(
this ISpecificationWithOrdering <T> specification,
Expression <Func <T, bool> > predicate)
{
return(new SpecificationWithOrdering <T>
(
criteria: predicate,
groupBy: specification.GroupBy,
orderBy: specification.OrderBy,
takePage: specification.TakePage
));
}
private static ISpecificationWithOrdering <T> TakePage <T>(
this ISpecificationWithOrdering <T> specification,
PaginationExpression?takePage)
{
return(new SpecificationWithOrdering <T>
(
criteria: specification.Criteria,
groupBy: specification.GroupBy,
orderBy: specification.OrderBy,
takePage: takePage
));
}
private static ISpecificationWithOrdering <T> ThenBy <T>(
this ISpecificationWithOrdering <T> specification,
OrderingDirection direction,
Expression <Func <T, object> > keySelector)
{
var orderBy = specification.OrderBy.ToList();
orderBy.Add(new OrderingExpression <T>(direction, keySelector));
return(new SpecificationWithOrdering <T>
(
criteria: specification.Criteria,
groupBy: specification.GroupBy,
orderBy: orderBy,
takePage: specification.TakePage
));
}
public static ISpecificationWithOrdering <T> TakeAll <T>(
this ISpecificationWithOrdering <T> specification)
{
return(specification
.TakePage(null));
}
