public static IQueryable <Product> UseOptions(this IQueryable <Product> query,
ProductRetrievalOptions options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (!options.ForUpdate)
{
query = query.AsNoTracking();
}
if (options.LoadEvent)
{
query = query.Include(e => e.EventInfo);
}
if (options.LoadVariants)
{
query = query.Include(e => e.ProductVariants);
}
return(query);
}
public async Task <Product> GetProductByIdAsync(
int productId,
ProductRetrievalOptions options,
CancellationToken cancellationToken)
{
return(await _context.Products
.UseOptions(options ?? ProductRetrievalOptions.Default)
.SingleOrDefaultAsync(p => p.ProductId == productId, cancellationToken)
?? throw new NotFoundException($"Product {productId} not found"));
}
public async Task <ICollection <Product> > ListProductsAsync(
ProductListRequest request,
ProductRetrievalOptions options,
CancellationToken cancellationToken)
{
return(await _context.Products
.UseFilter(request.EventInfoId, request.Filter)
.UseOrder(request.Order, request.Descending)
.UseOptions(options ?? ProductRetrievalOptions.Default)
.ToArrayAsync(cancellationToken));
}
