internal static CodegenExpression MakeAggregationService(
            int subqueryNumber,
            AggregationServiceForgeDesc aggregationServiceForgeDesc,
            CodegenClassScope classScope,
            CodegenMethodScope parent,
            SAIFFInitializeSymbol symbols)
        {
            if (aggregationServiceForgeDesc == null)
            {
                return(ConstantNull());
            }

            AggregationClassNames aggregationClassNames =
                new AggregationClassNames(CodegenNamespaceScopeNames.ClassPostfixAggregationForSubquery(subqueryNumber));
            AggregationServiceFactoryMakeResult aggResult = AggregationServiceFactoryCompiler.MakeInnerClassesAndInit(
                false,
                aggregationServiceForgeDesc.AggregationServiceFactoryForge,
                parent,
                classScope,
                classScope.OutermostClassName,
                aggregationClassNames);

            classScope.AddInnerClasses(aggResult.InnerClasses);
            return(LocalMethod(aggResult.InitMethod, symbols.GetAddInitSvc(parent)));
        }
        public CodegenMethod InitializeCodegen(
            CodegenMethodScope parent,
            SAIFFInitializeSymbol symbols,
            CodegenClassScope classScope)
        {
            // add aggregation row+factory+serde as inner classes
            var aggregationClassNames = new AggregationClassNames();
            var inners = AggregationServiceFactoryCompiler.MakeTable(
                AggregationCodegenRowLevelDesc.FromTopOnly(_plan.AggDesc),
                GetType(),
                classScope,
                aggregationClassNames,
                _className);
            classScope.AddInnerClasses(inners);

            var method = parent.MakeChild(typeof(StatementAgentInstanceFactoryCreateTable), GetType(), classScope);

            CodegenExpression primaryKeyGetter = MultiKeyCodegen.CodegenGetterMayMultiKey(
                _plan.InternalEventType, 
                _plan.PrimaryKeyGetters,
                _plan.PrimaryKeyTypes,
                null,
                _plan.PrimaryKeyMultikeyClasses,
                method,
                classScope);
            CodegenExpression fafTransform = MultiKeyCodegen.CodegenMultiKeyFromArrayTransform(
                _plan.PrimaryKeyMultikeyClasses,
                method,
                classScope);
            CodegenExpression intoTableTransform = MultiKeyCodegen.CodegenMultiKeyFromMultiKeyTransform(
                _plan.PrimaryKeyMultikeyClasses,
                method,
                classScope);

            var propertyForgeEval = DataInputOutputSerdeForgeExtensions.CodegenArray(
                _plan.InternalEventTypePropertySerdes,
                method,
                classScope,
                ExprDotName(symbols.GetAddInitSvc(method), EPStatementInitServicesConstants.EVENTTYPERESOLVER));
            
            method.Block
                .DeclareVar<StatementAgentInstanceFactoryCreateTable>("saiff", NewInstance(typeof(StatementAgentInstanceFactoryCreateTable)))
                .SetProperty(Ref("saiff"), "TableName", Constant(_tableName))
                .SetProperty(Ref("saiff"), "PublicEventType", EventTypeUtility.ResolveTypeCodegen(_plan.PublicEventType, symbols.GetAddInitSvc(method)))
                .SetProperty(Ref("saiff"), "EventToPublic", MakeEventToPublic(method, symbols, classScope))
                .SetProperty(Ref("saiff"), "AggregationRowFactory", NewInstanceInner(aggregationClassNames.RowFactoryTop, Ref("this")))
                .SetProperty(Ref("saiff"), "AggregationSerde", NewInstanceInner(aggregationClassNames.RowSerdeTop, Ref("this")))
                .SetProperty(Ref("saiff"), "PrimaryKeyGetter", primaryKeyGetter)
                .SetProperty(Ref("saiff"), "PrimaryKeySerde", _plan.PrimaryKeyMultikeyClasses.GetExprMKSerde(method, classScope))
                .SetProperty(Ref("saiff"), "PropertyForges", propertyForgeEval)
                .SetProperty(Ref("saiff"), "PrimaryKeyObjectArrayTransform", fafTransform)
                .SetProperty(Ref("saiff"), "PrimaryKeyIntoTableTransform", intoTableTransform)

                .ExprDotMethod(symbols.GetAddInitSvc(method), "AddReadyCallback", Ref("saiff"))
                .MethodReturn(Ref("saiff"));
            return method;
        }
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        public CodegenMethod InitializeCodegen(
            CodegenMethodScope parent,
            SAIFFInitializeSymbol symbols,
            CodegenClassScope classScope)
        {
            // add aggregation row+factory+serde as inner classes
            var aggregationClassNames = new AggregationClassNames();
            var inners = AggregationServiceFactoryCompiler.MakeTable(
                AggregationCodegenRowLevelDesc.FromTopOnly(plan.AggDesc),
                GetType(),
                classScope,
                aggregationClassNames,
                className);
            classScope.AddInnerClasses(inners);

            var method = parent.MakeChild(typeof(StatementAgentInstanceFactoryCreateTable), GetType(), classScope);

            var primaryKeyGetter = ConstantNull();
            if (plan.PrimaryKeyGetters != null) {
                primaryKeyGetter = EventTypeUtility.CodegenGetterMayMultiKeyWCoerce(
                    plan.InternalEventType,
                    plan.PrimaryKeyGetters,
                    plan.PrimaryKeyTypes,
                    null,
                    method,
                    GetType(),
                    classScope);
            }

            method.Block
                .DeclareVar<StatementAgentInstanceFactoryCreateTable>(
                    "saiff",
                    NewInstance(typeof(StatementAgentInstanceFactoryCreateTable)))
                .SetProperty(Ref("saiff"), "TableName", Constant(tableName))
                .SetProperty(
                    Ref("saiff"),
                    "PublicEventType",
                    EventTypeUtility.ResolveTypeCodegen(plan.PublicEventType, symbols.GetAddInitSvc(method)))
                .SetProperty(Ref("saiff"), "EventToPublic", MakeEventToPublic(method, symbols, classScope))
                .SetProperty(
                    Ref("saiff"),
                    "AggregationRowFactory",
                    NewInstance(aggregationClassNames.RowFactoryTop, Ref("this")))
                .SetProperty(
                    Ref("saiff"),
                    "AggregationSerde",
                    NewInstance(aggregationClassNames.RowSerdeTop, Ref("this")))
                .SetProperty(Ref("saiff"), "PrimaryKeyGetter", primaryKeyGetter)
                .ExprDotMethod(symbols.GetAddInitSvc(method), "AddReadyCallback", Ref("saiff"))
                .MethodReturn(Ref("saiff"));
            return method;
        }
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        public CodegenExpression Make(
            CodegenMethodScope parent,
            SAIFFInitializeSymbol symbols,
            CodegenClassScope classScope)
        {
            var method = parent.MakeChild(typeof(RowRecogDesc), GetType(), classScope);
            var desc = Ref("desc");
            CodegenExpression init = symbols.GetAddInitSvc(method);

            var startStateNums = new int[_startStates.Length];
            for (var i = 0; i < _startStates.Length; i++) {
                startStateNums[i] = _startStates[i].NodeNumFlat;
            }

            var aggregationServiceFactories = ConstantNull();
            if (_aggregationServices != null) {
                var initAggsSvcs = new CodegenExpression[_aggregationServices.Length];
                for (var i = 0; i < _aggregationServices.Length; i++) {
                    initAggsSvcs[i] = ConstantNull();
                    if (_aggregationServices[i] != null) {
                        var aggSvc = _aggregationServices[i];
                        var aggregationClassNames = new AggregationClassNames("_mra" + i);
                        var result = AggregationServiceFactoryCompiler.MakeInnerClassesAndInit(
                            false,
                            aggSvc.AggregationServiceFactoryForge,
                            method,
                            classScope,
                            classScope.OutermostClassName,
                            aggregationClassNames);
                        classScope.AddInnerClasses(result.InnerClasses);
                        initAggsSvcs[i] = LocalMethod(result.InitMethod, symbols.GetAddInitSvc(parent));
                    }
                }

                aggregationServiceFactories = NewArrayWithInit(typeof(AggregationServiceFactory), initAggsSvcs);
            }

            method.Block
                .DeclareVar<RowRecogDesc>(desc.Ref, NewInstance(typeof(RowRecogDesc)))
                .SetProperty(desc, "ParentEventType", EventTypeUtility.ResolveTypeCodegen(_parentEventType, init))
                .SetProperty(desc, "RowEventType", EventTypeUtility.ResolveTypeCodegen(RowEventType, init))
                .SetProperty(desc, "CompositeEventType", EventTypeUtility.ResolveTypeCodegen(_compositeEventType, init))
                .SetProperty(
                    desc,
                    "MultimatchEventType",
                    _multimatchEventType == null
                        ? ConstantNull()
                        : EventTypeUtility.ResolveTypeCodegen(_multimatchEventType, init))
                .SetProperty(desc, "MultimatchStreamNumToVariable", Constant(_multimatchStreamNumToVariable))
                .SetProperty(desc, "MultimatchVariableToStreamNum", Constant(_multimatchVariableToStreamNum))
                .SetProperty(
                    desc,
                    "PartitionEvalMayNull",
                    MultiKeyCodegen.CodegenExprEvaluatorMayMultikey(_partitionBy, null, _partitionByMultiKey, method, classScope))
                .SetProperty(
                    desc,
                    "PartitionEvalTypes",
                    _partitionBy == null
                        ? ConstantNull()
                        : Constant(ExprNodeUtilityQuery.GetExprResultTypes(_partitionBy)))
                .SetProperty(desc, "PartitionEvalSerde", _partitionBy == null ? ConstantNull() : _partitionByMultiKey.GetExprMKSerde(method, classScope))
                .SetProperty(desc, "VariableStreams", MakeVariableStreams(method, symbols, classScope))
                .SetProperty(desc, "HasInterval", Constant(_hasInterval))
                .SetProperty(desc, "IsIterateOnly", Constant(_iterateOnly))
                .SetProperty(desc, "IsUnbound", Constant(_unbound))
                .SetProperty(desc, "IsOrTerminated", Constant(_orTerminated))
                .SetProperty(desc, "IsCollectMultimatches", Constant(_collectMultimatches))
                .SetProperty(desc, "IsDefineAsksMultimatches", Constant(_defineAsksMultimatches))
                .SetProperty(desc, "NumEventsEventsPerStreamDefine", Constant(_numEventsEventsPerStreamDefine))
                .SetProperty(desc, "MultimatchVariablesArray", Constant(_multimatchVariablesArray))
                .SetProperty(desc, "StatesOrdered", MakeStates(method, symbols, classScope))
                .SetProperty(desc, "NextStatesPerState", MakeNextStates(method, classScope))
                .SetProperty(desc, "StartStates", Constant(startStateNums))
                .SetProperty(desc, "IsAllMatches", Constant(_allMatches))
                .SetProperty(desc, "Skip", Constant(_skip))
                .SetProperty(
                    desc,
                    "ColumnEvaluators",
                    ExprNodeUtilityCodegen.CodegenEvaluators(_columnEvaluators, method, GetType(), classScope))
                .SetProperty(desc, "ColumnNames", Constant(_columnNames))
                .SetProperty(
                    desc,
                    "IntervalCompute",
                    _intervalCompute == null ? ConstantNull() : _intervalCompute.MakeEvaluator(method, classScope))
                .SetProperty(desc, "PreviousRandomAccessIndexes", Constant(_previousRandomAccessIndexes))
                .SetProperty(desc, "AggregationServiceFactories", aggregationServiceFactories)
                .SetProperty(
                    desc,
                    "AggregationResultFutureAssignables",
                    _aggregationServices == null ? ConstantNull() : MakeAggAssignables(method, classScope))
                .MethodReturn(desc);
            return LocalMethod(method);
        }