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