/// <summary>
/// Starts observing the real-time Database. Events will be fired both when change is done locally and remotely.
/// </summary>
/// <returns> Stream of <see cref="FirebaseEvent{T}"/>. </returns>
public IObservable <FirebaseEvent <T> > AsObservable()
{
if (this.observable == null)
{
var initialData = this.Database.Count == 0
? Observable.Return(FirebaseEvent <T> .Empty(FirebaseEventSource.Offline))
: this.Database
.Where(kvp => !string.IsNullOrEmpty(kvp.Value.Data) && kvp.Value.Data != "null" && !kvp.Value.IsPartial)
.Select(kvp => new FirebaseEvent <T>(kvp.Key, kvp.Value.Deserialize <T>(), FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline))
.ToList()
.ToObservable();
this.observable = initialData
.Merge(this.subject)
.Merge(this.GetInitialPullObservable()
.RetryAfterDelay(TimeSpan.FromSeconds(10))
.SelectMany(e => e)
.Do(this.SetObjectFromInitialPull)
.Select(e => new FirebaseEvent <T>(e.Key, e.Object, FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Online))
.Concat(Observable.Create <FirebaseEvent <T> >(observer => this.InitializeStreamingSubscription(observer))))
.Replay()
.RefCount();
}
return(this.observable);
}
/// <summary>
/// Starts observing the real-time Database. Events will be fired both when change is done locally and remotely.
/// </summary>
/// <returns> Stream of <see cref="FirebaseEvent{T}"/>. </returns>
public IObservable <FirebaseEvent <T> > AsObservable()
{
if (this.observable == null)
{
var initialData = this.Database.Count == 0
? Observable.Return(FirebaseEvent <T> .Empty(FirebaseEventSource.Offline))
: this.Database
.Where(kvp => !string.IsNullOrEmpty(kvp.Value.Data) && kvp.Value.Data != "null" && !kvp.Value.IsPartial)
.Select(kvp => new FirebaseEvent <T>(kvp.Key, kvp.Value.Deserialize <T>(), FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline))
.ToList()
.ToObservable();
this.observable = initialData
.Merge(this.subject)
.Merge(this.GetInitialPullObservable()
.RetryAfterDelay <IReadOnlyCollection <FirebaseObject <T> >, FirebaseException>(
this.childQuery.Client.Options.SyncPeriod,
ex => ex.StatusCode == System.Net.HttpStatusCode.OK) // OK implies the request couldn't complete due to network error.
.SelectMany(e => e)
.Do(this.SetObjectFromInitialPull)
.Select(e => new FirebaseEvent <T>(e.Key, e.Object, FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Online))
.Concat(Observable.Create <FirebaseEvent <T> >(observer => this.InitializeStreamingSubscription(observer))))
.Do(next => { }, e => this.observable = null, () => this.observable = null)
.Replay()
.RefCount();
}
return(this.observable);
}
/// <summary>
/// Starts observing the real-time Database. Events will be fired both when change is done locally and remotely.
/// </summary>
/// <returns> Stream of <see cref="FirebaseEvent{T}"/>. </returns>
public IObservable <FirebaseEvent <T> > AsObservable()
{
if (!this.isSyncRunning)
{
this.isSyncRunning = true;
Task.Factory.StartNew(this.SynchronizeThread, CancellationToken.None, TaskCreationOptions.LongRunning, TaskScheduler.Default);
}
if (this.observable == null)
{
var initialData = Observable.Return(FirebaseEvent <T> .Empty(FirebaseEventSource.Offline));
if (this.Database.TryGetValue(this.elementRoot, out OfflineEntry oe))
{
initialData = Observable.Return(oe)
.Where(offlineEntry => !string.IsNullOrEmpty(offlineEntry.Data) && offlineEntry.Data != "null" && !offlineEntry.IsPartial)
.Select(offlineEntry => new FirebaseEvent <T>(offlineEntry.Key, offlineEntry.Deserialize <T>(), FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline));
}
else if (this.Database.Count > 0)
{
initialData = this.Database
.Where(kvp => !string.IsNullOrEmpty(kvp.Value.Data) && kvp.Value.Data != "null" && !kvp.Value.IsPartial)
.Select(kvp => new FirebaseEvent <T>(kvp.Key, kvp.Value.Deserialize <T>(), FirebaseEventType.InsertOrUpdate, FirebaseEventSource.Offline))
.ToList()
.ToObservable();
}
this.observable = initialData
.Merge(this.subject)
.Merge(this.GetInitialPullObservable()
.RetryAfterDelay <IReadOnlyCollection <FirebaseObject <T> >, FirebaseException>(
this.childQuery.Client.Options.SyncPeriod,
ex => ex.StatusCode == System.Net.HttpStatusCode.OK) // OK implies the request couldn't complete due to network error.
.Select(e => this.ResetDatabaseFromInitial(e))
.SelectMany(e => e)
.Do(this.SetObjectFromInitialPull)
.Select(e => new FirebaseEvent <T>(e.Key, e.Object, e.Object == null ? FirebaseEventType.Delete : FirebaseEventType.InsertOrUpdate, FirebaseEventSource.OnlineInitial))
.Concat(Observable.Create <FirebaseEvent <T> >(observer => this.InitializeStreamingSubscription(observer))))
.Do(next => { }, e => this.observable = null, () => this.observable = null)
.Replay()
.RefCount();
}
return(this.observable);
}
