private UnaryPipe <TKey, TSource, TResult> GetPipe(IStreamObserver <TKey, TResult> observer) { var lookupKey = CacheKey.Create(this.Selector.ExpressionToCSharp(), this.HasStartEdge, this.HasKey); var generatedPipeType = cachedPipes.GetOrAdd(lookupKey, key => SelectManyTemplate.Generate(this)); Func <PlanNode, IQueryObject, PlanNode> planNode = ((PlanNode p, IQueryObject o) => new SelectManyPlanNode(p, o, typeof(TKey), typeof(TSource), typeof(TResult), this.Selector, this.HasKey, this.HasStartEdge, true, generatedPipeType.Item2)); var instance = Activator.CreateInstance(generatedPipeType.Item1, this, observer, planNode); var returnValue = (UnaryPipe <TKey, TSource, TResult>)instance; return(returnValue); }
protected override bool CanGenerateColumnar() { var typeOfTKey = typeof(TKey); var typeOfTSource = typeof(TSource); var typeOfTResult = typeof(TResult); if (!typeOfTSource.CanRepresentAsColumnar() || !typeOfTResult.CanRepresentAsColumnar() || typeOfTKey.GetPartitionType() != null) { return(false); } var lookupKey = CacheKey.Create(this.Selector.ExpressionToCSharp(), this.HasStartEdge, this.HasKey); var generatedPipeType = cachedPipes.GetOrAdd(lookupKey, key => SelectManyTemplate.Generate(this)); this.errorMessages = generatedPipeType.Item2; return(generatedPipeType.Item1 != null); }