private void ConfigureServices()
{
DbObservable <AlarmEntity, LocalDbContext> .FromInserted()
.Merge <IEntry>(DbObservable <AlarmEntity, LocalDbContext> .FromDeleted())
.Merge(DbObservable <AlarmEntity, LocalDbContext> .FromUpdated())
.Cast <object>()
.Merge(DbObservable <LessonEntity, LocalDbContext> .FromInserted())
.Merge(DbObservable <LessonEntity, LocalDbContext> .FromUpdated())
.Merge(DbObservable <LessonEntity, LocalDbContext> .FromDeleted())
.TakeUntil(_destroySubject)
.ObserveOnDispatcher(DispatcherPriority.Background)
.Subscribe(_ => StartTimer());
StartTimer();
StartBackupService();
}
public IObservable <IEnumerable <DbChange <T> > > ChangeListener <T>(int delayMs = 1000) where T : class
{
var changeSource = Observable.Merge
(
DbObservable <GeneralDbContext>
.FromInserted <T>()
.Select(entry => new DbChange <T>(entry.Entity, ChangeReason.Insert)),
DbObservable <GeneralDbContext>
.FromDeleted <T>()
.Select(entry => new DbChange <T>(entry.Entity, ChangeReason.Delete)),
DbObservable <GeneralDbContext>
.FromUpdated <T>()
.Select(entry => new DbChange <T>(entry.Entity, ChangeReason.Update))
);
var throttle = changeSource.Throttle(TimeSpan.FromMilliseconds(delayMs));
return(changeSource.Buffer(throttle));
}