public async Task <CollectionQueryResponse <TItem> > Handle(TPagedQueryRequest request, CancellationToken cancellationToken)
{
var query = await Filter(request);
IOrderedQueryable <TEntity>?orderedQuery = null;
if (request.SortOrder != null)
{
foreach (var col in request.SortOrder)
{
var colName = col.Name.ToLower();
if (!OrderByExpressions.ContainsKey(colName))
{
continue;
}
orderedQuery = StrongTypeOrderBy(OrderByExpressions[colName], orderedQuery, query, col.Direction);
}
}
orderedQuery ??= StrongTypeOrderBy(DefaultOrderBy(), query);
request.PageSize = request.PageSize < 0 ? 0 : request.PageSize;
return(new CollectionQueryResponse <TItem>()
{
Items = orderedQuery
.Skip(request.Page * request.PageSize)
.Take(request.PageSize)
.Select(Map()),
TotalItems = query.Count()
});
}
protected void AddOrdering(Expression <Func <T, object> > expression)
{
OrderByExpressions.Add(expression);
}
