//// GET api/authors
//public IEnumerable<Author> Get()
//{
// var repo = new AuthorRepository();
// return repo.GetAuthors();
//}
// GET api/authors
public Task <FullResponse> Get()
{
var authorRepo = new AuthorRepository();
var titleRepo = new TitleRepository();
var tcs = new TaskCompletionSource <FullResponse>();
var response = new FullResponse();
int outstandingOperations = 2;
Task.Factory.FromAsync(authorRepo.BeginGetAuthors(null, null), iar =>
{
response.Authors = authorRepo.EndGetAuthors(iar);
int currentCount = Interlocked.Decrement(ref outstandingOperations);
if (currentCount == 0)
{
tcs.SetResult(response);
}
});
Task.Factory.FromAsync(titleRepo.BeginGetTitles(null, null), iar =>
{
response.Titles = titleRepo.EndGetTitles(iar);
int currentCount = Interlocked.Decrement(ref outstandingOperations);
if (currentCount == 0)
{
tcs.SetResult(response);
}
});
return(tcs.Task);
}
private void EndGetData(IAsyncResult ar)
{
try
{
int authorCount = authorRepo.EndGetAuthors(authorIar).Count();
int titleCount = titleRepo.EndGetTitles(titleIar).Count();
output.Text = (authorCount + titleCount).ToString();
}
finally
{
asyncResult.Dispose();
}
}
public IAsyncResult BeginGetAuthorsAndTitles(AsyncCallback callback, object state)
{
var tcs = new TaskCompletionSource <FullDetails>(state);
int outstandingOperations = 2;
authorRepo.BeginGetAuthors(iar =>
{
try
{
response.Authors = authorRepo.EndGetAuthors(iar)
.Select(a => new AuthorDTO
{
FirstName = a.FirstName,
LastName = a.LastName
})
.ToList();
}
catch (Exception x)
{
faultMessage = "Error retrieving authors";
}
finally
{
int currentOutstanding = Interlocked.Decrement(ref outstandingOperations);
if (currentOutstanding == 0)
{
tcs.SetResult(response);
callback(tcs.Task);
}
}
}, null);
titleRepo.BeginGetTitles(iar =>
{
try
{
response.Titles = titleRepo.EndGetTitles(iar)
.Select(a => new TitleDTO()
{
Name = a.Name,
Price = a.Price == 0.0m ? (decimal?)null : a.Price
})
.ToList();
}
catch (Exception x)
{
faultMessage = "Error retrieving titles";
}
finally
{
int currentOutstanding = Interlocked.Decrement(ref outstandingOperations);
if (currentOutstanding == 0)
{
tcs.SetResult(response);
callback(tcs.Task);
}
}
}, null);
return(tcs.Task);
}
