private IDisposable InitializeStreamingSubscription(IObserver <FirebaseEvent <T> > observer)
{
var completeDisposable = Disposable.Create(() => this.isSyncRunning = false);
switch (this.streamingOptions)
{
case StreamingOptions.LatestOnly:
// stream since the latest key
var queryLatest = this.childQuery.OrderByKey().StartAt(() => this.GetLatestKey());
this.firebaseSubscription = new FirebaseSubscription <T>(observer, queryLatest, this.elementRoot, this.firebaseCache);
this.firebaseSubscription.ExceptionThrown += this.StreamingExceptionThrown;
return(new CompositeDisposable(this.firebaseSubscription.Run(), completeDisposable));
case StreamingOptions.Everything:
// stream everything
var queryAll = this.childQuery;
this.firebaseSubscription = new FirebaseSubscription <T>(observer, queryAll, this.elementRoot, this.firebaseCache);
this.firebaseSubscription.ExceptionThrown += this.StreamingExceptionThrown;
return(new CompositeDisposable(this.firebaseSubscription.Run(), completeDisposable));
default:
break;
}
return(completeDisposable);
}
/// <summary>
/// Starts observing this query watching for changes real time sent by the server.
/// </summary>
/// <typeparam name="T"> Type of elements. </typeparam>
/// <param name="elementRoot"> Optional custom root element of received json items. </param>
/// <returns> Observable stream of <see cref="FirebaseEvent{T}"/>. </returns>
public IObservable <FirebaseEvent <T> > AsObservable <T>(EventHandler <ExceptionEventArgs <FirebaseException> > exceptionHandler = null, string elementRoot = "")
{
return(Observable.Create <FirebaseEvent <T> >(observer =>
{
var sub = new FirebaseSubscription <T>(observer, this, elementRoot, new FirebaseCache <T>());
sub.ExceptionThrown += exceptionHandler;
return sub.Run();
}));
}
private IDisposable InitializeStreamingSubscription(IObserver <FirebaseEvent <T> > observer)
{
if (this.streamChanges)
{
var query = this.childQuery.OrderByKey().StartAt(() => this.GetLatestKey());
var sub = new FirebaseSubscription <T>(observer, query, this.elementRoot, this.firebaseCache);
sub.ExceptionThrown += this.StreamingExceptionThrown;
return(sub.Run());
}
return(Observable.Never <string>().Subscribe());
}
private IDisposable InitializeStreamingSubscription(IObserver <FirebaseEvent <T> > observer)
{
var completeDisposable = Disposable.Create(() => this.isSyncRunning = false);
if (this.streamChanges)
{
var query = this.childQuery.OrderByKey().StartAt(() => this.GetLatestKey());
var sub = new FirebaseSubscription <T>(observer, query, this.elementRoot, this.firebaseCache);
sub.ExceptionThrown += this.StreamingExceptionThrown;
return(new CompositeDisposable(sub.Run(), completeDisposable));
}
return(completeDisposable);
}
