private static Func <TouristAttractionServiceInformation, bool> ActivityTypePredicate(
INeedTouristAttractionServicesRequest message)
{
if (!message.ActivityTypes.Any())
{
return(x => true);
}
return(x => message.ActivityTypes.ToList().Contains(x.ActivityType));
}
public static IEnumerable <Func <TouristAttractionServiceInformation, bool> > GetFor(
INeedTouristAttractionServicesRequest message)
{
yield return(ActivityTypePredicate(message));
yield return(ActivityDatePredicate(message));
yield return(LocationPredicate(message));
yield return(ActivityPricePredicate(message));
}
public void Handle(INeedTouristAttractionServicesRequest message, AID sender)
{
List <TouristAttractionServiceInformation> touristAttractionServiceInformations =
Services.GetFor(message).ToList();
SendMessage(
sender,
new FoundTouristAttractionServicesResponse
{
CorrelationId = message.CorrelationId,
Activities = touristAttractionServiceInformations
});
}
public static IEnumerable <TouristAttractionServiceInformation> GetFor(
this IList <TouristAttractionServiceInformation> services,
INeedTouristAttractionServicesRequest message)
{
IEnumerable <TouristAttractionServiceInformation> query = services;
IEnumerable <Func <TouristAttractionServiceInformation, bool> > predicates = SearchPredicates.GetFor(message);
foreach (Func <TouristAttractionServiceInformation, bool> predicate in predicates)
{
query = query.Where(predicate);
}
return(query);
}
private static Func <TouristAttractionServiceInformation, bool> ActivityPricePredicate(INeedTouristAttractionServicesRequest message)
{
if (message.TouristAttractionsPrice.IsNull())
{
return(x => true);
}
else if (message.TouristAttractionsPrice.Min == null && message.TouristAttractionsPrice.Max != null)
{
return(x => message.TouristAttractionsPrice.Max >= x.Price);
}
else if (message.TouristAttractionsPrice.Min != null && message.TouristAttractionsPrice.Max == null)
{
return(x => message.TouristAttractionsPrice.Min <= x.Price);
}
return(x => x.Price <= message.TouristAttractionsPrice.Max && x.Price >= message.TouristAttractionsPrice.Min);
}
private static Func <TouristAttractionServiceInformation, bool> LocationPredicate(INeedTouristAttractionServicesRequest message)
{
if (String.IsNullOrEmpty(message.Location))
{
return(x => true);
}
return(x => x.City == message.Location);
}
private static Func <TouristAttractionServiceInformation, bool> ActivityDatePredicate(INeedTouristAttractionServicesRequest message)
{
if (message.EventDate.IsNull())
{
return(x => true);
}
else if (message.EventDate.Min == null && message.EventDate.Max != null)
{
return(x => message.EventDate.Max >= x.DateStart && message.EventDate.Max <= x.DateEnd);
}
else if (message.EventDate.Min != null && message.EventDate.Max == null)
{
return(x => message.EventDate.Min >= x.DateStart && message.EventDate.Min <= x.DateEnd);
}
return(x => message.EventDate.Min <= x.DateStart && message.EventDate.Max >= x.DateEnd);
}