public Task AddResultAsync(IPostBasket <Types.MatingEvent, string> basket, IVisit visit)
{
// get what we need out of the basket so that a response can be generated
var male = basket.DescentPayload.Male;
var female = basket.DescentPayload.Female;
var date = basket.DescentPayload.Date;
// we're going to patch the male and female, so there is a record of them mating
var modifiedProps = new Dictionary <string, object> {
{ nameof(Types.Frog.DateLastMated), date }
};
var patchMaleBasket = new PatchBasket <int, Types.Frog, int>(
new PatchRequest <int, Types.Frog>(new Delta <int, Types.Frog>(male.Id, modifiedProps)), basket);
var patchFemaleBaset = new PatchBasket <int, Types.Frog, int>(
new PatchRequest <int, Types.Frog>(new Delta <int, Types.Frog>(female.Id, modifiedProps)), basket);
// generate some children for the male and female
var tadpoleBaskets = GenerateTadpoles(basket, female, male, date);
Task.WaitAll(_frogMine.SendAsync(patchMaleBasket), _frogMine.SendAsync(patchFemaleBaset));
var tadpoleCount = tadpoleBaskets.Select(t => t.AscentPayload).Count();
// the result of this operation is a string
basket.AscentPayload = $"[{date:d}] {male.Name} and {female.Name} had {tadpoleCount} children";
return(Task.CompletedTask);
}
/// <summary>
/// After a "Post" request has been processed and the response basket has ascended to here
/// any cached collection which is now invalid (i.e. does not contain the object but now should)
/// is removed from the cache
/// </summary>
/// <param name="basket">The response</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public Task AscendFromAsync(IPostBasket <T, TId> basket, IVisit visit)
{
// always remove items from cache on way back up, otherwise another thread
// may repopulate the cache before the decent is complete
Cache.RemoveCollection();
return(Task.CompletedTask);
}
/// <summary>
/// Inserts the requested T into the database and sets the baskets AscentPayload to new records identity
/// </summary>
/// <param name="basket">A basket</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public async Task AddResultAsync(IPostBasket <T, TId> basket, IVisit visit)
{
if (basket == null)
{
throw new ArgumentNullException(nameof(basket));
}
var statement = GetInsertDbStatement(basket.DescentPayload);
visit.Log(statement.ToString());
var id = await DbInterface.ExecuteScalarAsync(statement).ConfigureAwait(false);
basket.AscentPayload = Descriptor.ProjectColumnValue <TId>(id);
}
public Task AscendFromAsync(IPostBasket <Types.MatingEvent, string> basket, IVisit visit)
{
// grab baskets on the way up and translate their contents
var message = basket.AscentPayload;
if (!string.IsNullOrWhiteSpace(message))
{
message = message
.Replace("and", "y")
.Replace("had", "tienen")
.Replace("children", "niños");
basket.AscentPayload = message;
}
return(Task.CompletedTask);
}
public Task <IPostBasket <Types.MatingEvent, string> > SendAsync(IPostBasket <Types.MatingEvent, string> basket)
{
var shaft = new Shaft <IPostBasket <Types.MatingEvent, string> >(TraceExporter, TerminalLayer,
GetStations <IPostBasket <Types.MatingEvent, string> >());
// Here, based on some "configuration" were injecting functionality into the shaft.
// The station that is added will be the lowest station in the shaft (but above the terminal),
// i.e. it will be below the stations from the security layer which was added in the base AppMine
// class
if (Language == Languages.Spanish)
{
shaft.Add(new SpanishTranslationStation());
}
else if (Language == Languages.French)
{
shaft.Add(new FrenchTranslationStation());
}
return(shaft.SendAsync(basket));
}
public async Task AddResultAsync(IPostBasket <Types.MaturationEvent, int> basket, IVisit visit)
{
var date = basket.DescentPayload.Date;
var filter = new Filter <Types.Tadpole>(new[]
{
new FilterTerm(nameof(Types.Tadpole.DateOfBirth), FilterOperators.LessThanOrEqual, date.AddMonths(-2))
});
// get all tadpoles who are of a certain age - see filter above
var getTadpolesBasket =
new GetCollectionBasket <Types.Tadpole>(new GetCollectionRequest <Types.Tadpole>(filter));
await _tadpoleMine.SendAsync(getTadpolesBasket).ConfigureAwait(false);
var tadpoles = getTadpolesBasket.AscentPayload;
if (tadpoles.Length > 0)
{
// covert the retrieved tadpoles into frogs...
foreach (var tadpole in tadpoles)
{
var frog = tadpole.ToFrog();
using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
{
// ... create frog
var postFrogBasket = new PostBasket <Types.Frog, int>(frog);
var postFrogTask = _frogMine.SendAsync(postFrogBasket);
// ...and get rid of the tapole which has now become a frog
var deleteTadpoleBasket = new DeleteBasket <int, Types.Tadpole, int>(tadpole.Id);
var deleteTadpoleTask = _tadpoleMine.SendAsync(deleteTadpoleBasket);
Task.WaitAll(postFrogTask, deleteTadpoleTask);
scope.Complete();
}
}
}
basket.AscentPayload = tadpoles.Length;
}
private IPostBasket <Types.Tadpole, int>[] GenerateTadpoles(IBasket parent,
Types.Frog mother, Types.Frog father, DateTime date)
{
var tadpoleCount = 10;
var tasks = new Task[tadpoleCount];
var baskets = new IPostBasket <Types.Tadpole, int> [tadpoleCount];
// generate 10 tadpoles for the mother and father
var surname = $"{father.Id}-{mother.Id}";
var eventNo = 1;
// this is just something to ensure the child has a unique name - it's not important to understand
if (FamilyEventsEvents.ContainsKey(surname))
{
eventNo = FamilyEventsEvents[surname] + 1;
}
for (var i = 0; i < tadpoleCount; i++)
{
var tadpole = new Types.Tadpole
{
DateOfBirth = date.AddDays(i),
MotherId = mother.Id,
FatherId = father.Id,
LivesInPondId = mother.LivesInPondId,
IsMale = i % 2 == 0,
Name = (i % 2 == 0 ? "M" : "F") + $"{i}:{eventNo}:{surname}"
};
var postBasket = new PostBasket <Types.Tadpole, int>(tadpole, parent);
tasks[i] = _tadpoleMine.SendAsync(postBasket);
baskets[i] = postBasket;
}
FamilyEventsEvents[surname] = eventNo;
Task.WaitAll(tasks);
return(baskets);
}
public Task DescendToAsync(IPostBasket <Types.MatingEvent, string> basket, IVisit visit)
{
// just let baskets pass through on the way down
return(Task.CompletedTask);
}
/// <summary>
/// No action is performed
/// </summary>
/// <param name="basket">The request</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public Task DescendToAsync(IPostBasket <T, TId> basket, IVisit visit)
{
return(Task.CompletedTask);
}
public Task <IPostBasket <Types.MaturationEvent, int> > SendAsync(IPostBasket <Types.MaturationEvent, int> basket)
{
return(new Shaft <IPostBasket <Types.MaturationEvent, int> >(TraceExporter, TerminalLayer,
GetStations <IPostBasket <Types.MaturationEvent, int> >()).SendAsync(basket));
}
public Task AddResultAsync(IPostBasket <Frog, int> basket, IVisit visit)
{
basket.AscentPayload = 8;
return(Task.CompletedTask);
}
public Task <IPostBasket <T, TId> > SendAsync(IPostBasket <T, TId> basket)
{
return(new Shaft <IPostBasket <T, TId> >(TraceExporter, TerminalLayer, GetStations <IPostBasket <T, TId> >())
.SendAsync(basket));
}
public Task <IPostBasket <Frog, int> > SendAsync(IPostBasket <Frog, int> basket)
{
return(new Shaft <IPostBasket <Frog, int> >(TerminalLayer)
.Add(CacheLayer)
.SendAsync(basket));
}
/// <summary>
/// Performs no action
/// </summary>
/// <param name="basket">A basket</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public Task AscendFromAsync(IPostBasket basket, IVisit visit)
{
return(Task.CompletedTask);
}
/// <summary>
/// If the user is not allowed to "Post" T's then an UnauthorizedAccessException will be thrown.
/// </summary>
/// <param name="basket">The request</param>
/// <param name="visit">The visit the basket is currently making</param>
/// <returns>A Task that may be awaited</returns>
public Task DescendToAsync(IPostBasket basket, IVisit visit)
{
EnsureOperationAllowed(Operations.Post, basket, visit);
return(Task.CompletedTask);
}