public void DoNotThrowAWobblyWhenRemovingaMutatedValue()
{
var pageController = new PageController();
var sortController = new SortController<TestVm>(SortExpressionComparer<TestVm>.Ascending(t => t.DateFavorited ?? DateTime.MinValue));
var filterController = new FilterController<TestVm>(myVm => myVm.Id != 0);
var items = new ObservableCollectionExtended<TestVm>();
var itemCache = new SourceCache<TestVm, int>(myVm => myVm.Id);
var item1 = new TestVm(1) { DateFavorited = DateTime.Now };
var item2 = new TestVm(2) { DateFavorited = DateTime.Now };
itemCache.AddOrUpdate(item1);
itemCache.AddOrUpdate(item2);
bool error = false;
itemCache.Connect()
.Filter(filterController)
.Sort(sortController)
.Page(pageController)//error doesnt occur with paging disabled
.Bind(items)
.Subscribe(changes => { }, ex => error = true);
pageController.Change(new PageRequest(1, 100));
//NB: never errored if it was the first item which was removed
item2.DateFavorited = null;
itemCache.Remove(item2); //ERROR!
Assert.IsFalse(error, "Error has been thrown");
}
public void Initialise()
{
_sortController = new SortController<Person>(_originalComparer);
_source = new SourceCache<Person, string>(p => p.Key);
_pageController = new PageController(new PageRequest(1, 25));
_aggregators = new PagedChangeSetAggregator<Person, string>
(
_source.Connect()
.Sort(_sortController)
.Page(_pageController)
);
}
public void Initialise()
{
_comparer = SortExpressionComparer<Person>.Ascending(p => p.Name).ThenByAscending(p => p.Age);
_source = new SourceCache<Person, string>(p=>p.Key);
_pageController = new PageController(new PageRequest(1,25));
_aggregators = new PagedChangeSetAggregator<Person, string>
(
_source.Connect()
.Sort(_comparer)
.Page(_pageController)
);
}
public PagedDataViewer(ILogger logger, ITradeService tradeService, ISchedulerProvider schedulerProvider)
{
_logger = logger;
//watch for filter changes and change filter
var filterController = new FilterController<Trade>(trade => true);
var filterApplier = this.ObservePropertyValue(t => t.SearchText)
.Throttle(TimeSpan.FromMilliseconds(250))
.Select(propargs => BuildFilter(propargs.Value))
.Subscribe(filterController.Change);
//watch for changes to sort and apply when necessary
var sortContoller = new SortController<TradeProxy>(SortExpressionComparer<TradeProxy>.Ascending(proxy=>proxy.Id));
var sortChange = SortParameters.ObservePropertyValue(t => t.SelectedItem).Select(prop=>prop.Value.Comparer)
.ObserveOn(schedulerProvider.TaskPool)
.Subscribe(sortContoller.Change);
//watch for page changes and change filter
var pageController = new PageController();
var currentPageChanged = PageParameters.ObservePropertyValue(p => p.CurrentPage).Select(prop => prop.Value);
var pageSizeChanged = PageParameters.ObservePropertyValue(p => p.PageSize).Select(prop => prop.Value);
var pageChanger = currentPageChanged.CombineLatest(pageSizeChanged,(page, size) => new PageRequest(page, size))
.DistinctUntilChanged()
.Sample(TimeSpan.FromMilliseconds(100))
.Subscribe(pageController.Change);
// filter, sort, page and bind to loaded data
var loader = tradeService.All .Connect()
.Filter(filterController) // apply user filter
.Transform(trade => new TradeProxy(trade), new ParallelisationOptions(ParallelType.Ordered, 5))
.Sort(sortContoller, SortOptimisations.ComparesImmutableValuesOnly)
.Page(pageController)
.ObserveOn(schedulerProvider.MainThread)
.Do(changes => _pageParameters.Update(changes.Response))
.Bind(_data) // update observable collection bindings
.DisposeMany() //since TradeProxy is disposable dispose when no longer required
.Subscribe();
_cleanUp = new CompositeDisposable(loader, filterController, filterApplier, sortChange,sortContoller, pageChanger, pageController);
}
public void Initialise()
{
_source = new SourceList<Person>();
_controller = new PageController(new PageRequest(1,25));
_results = _source.Connect().Page(_controller).AsAggregator();
}