public IDisposable Subscribe(IObserver <DictionaryNotification <TKey, TValue> > observer)
{
var futureDisposable = new SingleAssignmentDisposable();
var scheduledWorkDisposable = _scheduler.Schedule(() =>
{
if (_isDisposed)
{
futureDisposable.Disposable =
Observable.Throw <DictionaryNotification <TKey, TValue> >(
new ObjectDisposedException(this.GetType().Name)).Subscribe(observer);
}
if (_error != null)
{
futureDisposable.Disposable = Observable.Throw <DictionaryNotification <TKey, TValue> >(_error).Subscribe(observer);
}
var existingValues = _state.ToList();
foreach (var existingValue in existingValues)
{
observer.OnNext(DictionaryNotification.Existing(existingValue.Key, existingValue.Value));
}
observer.OnNext(DictionaryNotification.Initialised <TKey, TValue>());
futureDisposable.Disposable = new CompositeDisposable(_subject.Subscribe(observer), Connect());
});
return(new CompositeDisposable(scheduledWorkDisposable, futureDisposable));
}
public IDisposable Subscribe(IObserver <DictionaryNotification <TKey, TValue> > observer)
{
lock (_lock)
{
if (_isDisposed)
{
return
(Observable.Throw <DictionaryNotification <TKey, TValue> >(
new ObjectDisposedException(this.GetType().Name)).Subscribe(observer));
}
if (_error != null)
{
return(Observable.Throw <DictionaryNotification <TKey, TValue> >(_error).Subscribe(observer));
}
var existingValues = _state.ToList();
foreach (var existingValue in existingValues)
{
observer.OnNext(DictionaryNotification.Existing(existingValue.Key, existingValue.Value));
}
observer.OnNext(DictionaryNotification.Initialised <TKey, TValue>());
return(new CompositeDisposable(_subject.Subscribe(observer), Connect()));
}
}
public IObservable <DictionaryNotification <TKey, TValue> > Get(TKey key)
{
return(Observable.Create <DictionaryNotification <TKey, TValue> >(observer =>
{
TValue existingValue;
if (_state.TryGetValue(key, out existingValue))
{
observer.OnNext(DictionaryNotification.Existing(key, existingValue));
}
else
{
observer.OnNext(DictionaryNotification.Missing <TKey, TValue>(key));
}
return new CompositeDisposable(_subject
.Where(dn => dn.Type == DictionaryNotificationType.KeyCleared || Equals(dn.Key, key))
.Subscribe(observer), Connect());
})
.SubscribeOn(_scheduler));
}
public IObservable <DictionaryNotification <TKey, TValue> > Get(TKey key)
{
return(Observable.Create <DictionaryNotification <TKey, TValue> >(observer =>
{
lock (_lock)
{
TValue existingValue;
if (_state.TryGetValue(key, out existingValue))
{
observer.OnNext(DictionaryNotification.Existing(key, existingValue));
}
else
{
observer.OnNext(DictionaryNotification.Missing <TKey, TValue>(key));
}
return new CompositeDisposable(_subject.Subscribe(observer), Connect());
}
}));
}