public AggregationStateFactory MakeFactory() { var sortUsingCollator = _methodResolutionService.IsSortUsingCollator; var comparator = CollectionUtil.GetComparator(_evaluators, sortUsingCollator, _sortDescending); var criteriaKeyBinding = _methodResolutionService.GetCriteriaKeyBinding(_evaluators); AggregationStateFactory factory; if (_ever) { var spec = new AggregationStateMinMaxByEverSpec(_streamNum, _evaluators, _parent.IsMax, comparator, criteriaKeyBinding); factory = new ProxyAggregationStateFactory() { ProcCreateAccess = (methodResolutionService, agentInstanceId, groupId, aggregationId, join, groupKey) => methodResolutionService.MakeAccessAggMinMaxEver(agentInstanceId, groupId, aggregationId, spec), ProcAggregationExpression = () => _parent, }; } else { var spec = new AggregationStateSortedSpec(_streamNum, _evaluators, comparator, criteriaKeyBinding); factory = new ProxyAggregationStateFactory() { ProcCreateAccess = (methodResolutionService, agentInstanceId, groupId, aggregationId, join, groupKey) => { if (join) { return(methodResolutionService.MakeAccessAggSortedJoin(agentInstanceId, groupId, aggregationId, spec)); } return(methodResolutionService.MakeAccessAggSortedNonJoin(agentInstanceId, groupId, aggregationId, spec)); }, ProcAggregationExpression = () => _parent, }; } return(factory); }
private LinearAggregationFactoryDesc HandleCreateTable(ExprNode[] childNodes, AggregationStateType stateType, ExprValidationContext validationContext) { var message = "For tables columns, the " + stateType.GetName().ToLower() + " aggregation function requires the 'window(*)' declaration"; if (stateType != AggregationStateType.WINDOW) { throw new ExprValidationException(message); } if (childNodes.Length == 0 || childNodes.Length > 1 || !(childNodes[0] is ExprWildcard)) { throw new ExprValidationException(message); } if (validationContext.StreamTypeService.StreamNames.Length == 0) { throw new ExprValidationException(GetErrorPrefix(stateType) + " requires that the event type is provided"); } var containedType = validationContext.StreamTypeService.EventTypes[0]; var componentType = containedType.UnderlyingType; AggregationAccessor accessor = new AggregationAccessorWindowNoEval(componentType); ExprNode me = this; AggregationStateFactory stateFactory = new ProxyAggregationStateFactory { ProcCreateAccess = (methodResolutionService, agentInstanceId, groupId, aggregationId, join, groupKey, passThru) => methodResolutionService.MakeAccessAggLinearNonJoin(agentInstanceId, groupId, aggregationId, 0, passThru), ProcAggregationExpression = () => me, }; var factory = new ExprAggMultiFunctionLinearAccessNodeFactoryAccess(this, accessor, TypeHelper.GetArrayType(componentType), containedType, null, stateFactory, null); return(new LinearAggregationFactoryDesc(factory, factory.ContainedEventType, null)); }
private LinearAggregationFactoryDesc HandleNonIntoTable(ExprNode[] childNodes, AggregationStateType stateType, ExprValidationContext validationContext) { var streamTypeService = validationContext.StreamTypeService; int streamNum; Type resultType; ExprEvaluator evaluator; ExprNode evaluatorIndex = null; bool istreamOnly; EventType containedType; Type scalarCollectionComponentType = null; // validate wildcard use var isWildcard = childNodes.Length == 0 || childNodes.Length > 0 && childNodes[0] is ExprWildcard; if (isWildcard) { ExprAggMultiFunctionUtil.ValidateWildcardStreamNumbers(validationContext.StreamTypeService, stateType.ToString().ToLower()); streamNum = 0; containedType = streamTypeService.EventTypes[0]; resultType = containedType.UnderlyingType; TableMetadata tableMetadata = validationContext.TableService.GetTableMetadataFromEventType(containedType); evaluator = ExprNodeUtility.MakeUnderlyingEvaluator(0, resultType, tableMetadata); istreamOnly = GetIstreamOnly(streamTypeService, 0); if ((stateType == AggregationStateType.WINDOW) && istreamOnly && !streamTypeService.IsOnDemandStreams) { throw MakeUnboundValidationEx(stateType); } } // validate "stream.*" else if (childNodes.Length > 0 && childNodes[0] is ExprStreamUnderlyingNode) { streamNum = ExprAggMultiFunctionUtil.ValidateStreamWildcardGetStreamNum(childNodes[0]); istreamOnly = GetIstreamOnly(streamTypeService, streamNum); if ((stateType == AggregationStateType.WINDOW) && istreamOnly && !streamTypeService.IsOnDemandStreams) { throw MakeUnboundValidationEx(stateType); } var type = streamTypeService.EventTypes[streamNum]; containedType = type; resultType = type.UnderlyingType; TableMetadata tableMetadata = validationContext.TableService.GetTableMetadataFromEventType(type); evaluator = ExprNodeUtility.MakeUnderlyingEvaluator(streamNum, resultType, tableMetadata); } // validate when neither wildcard nor "stream.*" else { var child = childNodes[0]; var streams = ExprNodeUtility.GetIdentStreamNumbers(child); if ((streams.IsEmpty() || (streams.Count > 1))) { throw new ExprValidationException(GetErrorPrefix(stateType) + " requires that any child expressions evaluate properties of the same stream; Use 'firstever' or 'lastever' or 'nth' instead"); } streamNum = streams.First(); istreamOnly = GetIstreamOnly(streamTypeService, streamNum); if ((stateType == AggregationStateType.WINDOW) && istreamOnly && !streamTypeService.IsOnDemandStreams) { throw MakeUnboundValidationEx(stateType); } resultType = childNodes[0].ExprEvaluator.ReturnType; evaluator = childNodes[0].ExprEvaluator; if (streamNum >= streamTypeService.EventTypes.Length) { containedType = streamTypeService.EventTypes[0]; } else { containedType = streamTypeService.EventTypes[streamNum]; } scalarCollectionComponentType = resultType; } if (childNodes.Length > 1) { if (stateType == AggregationStateType.WINDOW) { throw new ExprValidationException(GetErrorPrefix(stateType) + " does not accept an index expression; Use 'first' or 'last' instead"); } evaluatorIndex = childNodes[1]; if (evaluatorIndex.ExprEvaluator.ReturnType != typeof(int?)) { throw new ExprValidationException(GetErrorPrefix(stateType) + " requires an index expression that returns an integer value"); } } // determine accessor AggregationAccessor accessor; if (evaluatorIndex != null) { var isFirst = stateType == AggregationStateType.FIRST; var constant = -1; if (evaluatorIndex.IsConstantResult) { constant = evaluatorIndex.ExprEvaluator.Evaluate(new EvaluateParams(null, true, null)).AsInt(); } accessor = new AggregationAccessorFirstLastIndexWEval(streamNum, evaluator, evaluatorIndex.ExprEvaluator, constant, isFirst); } else { if (stateType == AggregationStateType.FIRST) { accessor = new AggregationAccessorFirstWEval(streamNum, evaluator); } else if (stateType == AggregationStateType.LAST) { accessor = new AggregationAccessorLastWEval(streamNum, evaluator); } else if (stateType == AggregationStateType.WINDOW) { accessor = new AggregationAccessorWindowWEval(streamNum, evaluator, resultType); } else { throw new IllegalStateException("Access type is undefined or not known as code '" + stateType + "'"); } } var accessorResultType = resultType; if (stateType == AggregationStateType.WINDOW) { accessorResultType = TypeHelper.GetArrayType(resultType); } var isFafWindow = streamTypeService.IsOnDemandStreams && stateType == AggregationStateType.WINDOW; TableMetadata tableMetadataX = validationContext.TableService.GetTableMetadataFromEventType(containedType); if (tableMetadataX == null && !isFafWindow && (istreamOnly || streamTypeService.IsOnDemandStreams)) { var factoryX = new ExprAggMultiFunctionLinearAccessNodeFactoryMethod(this, containedType, accessorResultType, streamNum); return(new LinearAggregationFactoryDesc(factoryX, containedType, scalarCollectionComponentType)); } var stateKey = new AggregationStateKeyWStream(streamNum, containedType, AggregationStateTypeWStream.DATAWINDOWACCESS_LINEAR, new ExprNode[0]); ExprNode me = this; var theStreamNum = streamNum; AggregationStateFactory stateFactory = new ProxyAggregationStateFactory { ProcCreateAccess = (methodResolutionService, agentInstanceId, groupId, aggregationId, join, groupKey, passThru) => { if (join) { return(methodResolutionService.MakeAccessAggLinearJoin(agentInstanceId, groupId, aggregationId, theStreamNum, passThru)); } return(methodResolutionService.MakeAccessAggLinearNonJoin(agentInstanceId, groupId, aggregationId, theStreamNum, passThru)); }, ProcAggregationExpression = () => me }; var factory = new ExprAggMultiFunctionLinearAccessNodeFactoryAccess(this, accessor, accessorResultType, containedType, stateKey, stateFactory, AggregationAgentDefault.INSTANCE); var enumerationType = scalarCollectionComponentType == null ? containedType : null; return(new LinearAggregationFactoryDesc(factory, enumerationType, scalarCollectionComponentType)); }