private protected async Task PreActivate(Grain grain, Func <Task <IndexedGrainStateWrapper <TGrainState> > > readGrainStateFunc, Func <Task> writeGrainStateFunc)
{
if (this.grain != null) // Already called
{
return;
}
this.grain = grain;
this.iIndexableGrain = this.grain.AsReference <IIndexableGrain>(this.SiloIndexManager);
this.readGrainStateFunc = readGrainStateFunc;
this.writeGrainStateFunc = writeGrainStateFunc;
await this.ReadAsync();
if (!GrainIndexes.CreateInstance(this.SiloIndexManager.IndexRegistry, this.grain.GetType(), out this._grainIndexes) ||
!this._grainIndexes.HasAnyIndexes)
{
throw new InvalidOperationException("IndexedState should not be used for a Grain class with no indexes");
}
if (!this.wrappedState.AreNullValuesInitialized)
{
IndexUtils.SetNullValues(this.wrappedState.UserState, this._grainIndexes.PropertyNullValues);
this.wrappedState.AreNullValuesInitialized = true;
}
this._hasAnyUniqueIndex = this._grainIndexes.HasAnyUniqueIndex;
this._grainIndexes.AddMissingBeforeImages(this.wrappedState.UserState);
}
private Task Initialize(Grain grain)
{
if (this.grain == null) // If not already called
{
this.grain = grain;
this.iIndexableGrain = this.grain.AsReference <IIndexableGrain>(this.SiloIndexManager);
if (!GrainIndexes.CreateInstance(this.SiloIndexManager.IndexRegistry, this.grain.GetType(), out this._grainIndexes) ||
!this._grainIndexes.HasAnyIndexes)
{
throw new InvalidOperationException("IndexedState should not be used for a Grain class with no indexes");
}
this._hasAnyUniqueIndex = this._grainIndexes.HasAnyUniqueIndex;
}
return(Task.CompletedTask);
}
