public async Task ValidateAsync(IConcertContainer concertContainer)
{
if (concertContainer == null)
{
throw new ArgumentNullException(nameof(concertContainer));
}
var concert = await this.GetBy(concertContainer);
if (concertContainer.ConcertId.HasValue && concert == null)
{
throw new InvalidOperationException($"Concert not found by id {concertContainer.ConcertId}");
}
}
public async Task <Concert> GetByAsync(IConcertContainer concert)
{
return(concert.ConcertId.HasValue
? this.Mapper.Map <Concert>(await this.Context.Concert.FirstOrDefaultAsync(x => x.Id == concert.ConcertId))
: null);
}
private Task <Concert> GetBy(IConcertContainer concertContainer)
{
return(this.ConcertDataAccess.GetByAsync(concertContainer));
}
