public static RemoteDataChange Create(string FullPath,
string FieldName,
object FieldValue,
Action <RemoteDataChange> ApplyCallback)
{
var change = ClassPool.SpawnOrCreate(() => new RemoteDataChange());
change.FullPath = FullPath;
change.FieldName = FieldName;
change.FieldValue = FieldValue;
change.ApplyCallback = ApplyCallback;
return(change);
}
/// <summary>
/// WARNING complex types for field values not supported
/// </summary>
/// <param name="changes"></param>
/// <returns></returns>
public override async Task PerformBatchUpdate(IEnumerable <RemoteDataChange> changes)
{
var changeDictionary = ClassPool.SpawnOrCreate <Dictionary <string, object> >(() => new Dictionary <string, object>());
foreach (var change in changes)
{
changeDictionary.Add(change.FullPath, change.FieldValue);
}
var rootRef = FirebaseDatabase.DefaultInstance.RootReference;
await rootRef.UpdateChildrenAsync(changeDictionary);
foreach (var change in changes)
{
change.ApplyCallback?.Invoke(change);
change.Dispose();
}
ClassPool.Despawn <Dictionary <string, object> >(changeDictionary, null);
}
/// <summary>
/// Отправляет все локально записанные изменения на сервер.
/// ВАЖНО: все операции в рамках одной комманды не должны прерыватья вызовом
/// метода
/// </summary>
/// <returns></returns>
public async Task CommitChanges()
{
var updateTasks = ClassPool.SpawnOrCreate <List <Task> >(() => new List <Task>());
List <RemoteDataChange> changes;
lock (_pendingChanges)
{
changes = _pendingChanges.ToList();
_pendingChanges.Clear();
}
foreach (var change in changes)
{
updateTasks.Add(_objectHandler.ApplyChange(change));
}
await Task.WhenAll(updateTasks.ToArray());
changes.ForEach((ch) => ch.Dispose());
changes.Clear();
}
