protected override IQuery <Offer> ApplyWhereClause(IQuery <Offer> query, OfferFilterDTO filter)
{
var predicates = new List <IPredicate>();
if (filter.SearchedAuthorsIds != null && filter.SearchedAuthorsIds.Length != 0)
{
var predicate = new List <IPredicate>(filter.SearchedAuthorsIds
.Select(authorId => new SimplePredicate(
nameof(Offer.CreatorId),
ValueComparingOperator.Equal,
authorId)));
predicates.Add(new CompositePredicate(predicate));
}
if (filter.SearchedCategory.HasValue)
{
predicates.Add(new SimplePredicate(nameof(Offer.Category), ValueComparingOperator.Equal, filter.SearchedCategory));
}
if (filter.SearchedPrice.HasValue)
{
predicates.Add(new SimplePredicate(nameof(Offer.Price), ValueComparingOperator.Equal, filter.SearchedPrice));
}
return(query.Where(new CompositePredicate(predicates)));
}
public async Task <QueryResultDTO <OfferDTO, OfferFilterDTO> > ListOffersAsync(OfferFilterDTO filter)
{
using (UnitOfWorkProvider.Create())
{
return(await offerService.ListOffersAsync(filter));
}
}
