/// <summary> /// Ctor. /// </summary> /// <param name="viewChain">views</param> /// <param name="matchRecognizeSpec">specification</param> /// <param name="agentInstanceContext">The agent instance context.</param> /// <param name="isUnbound">true for unbound stream</param> /// <param name="annotations">annotations</param> /// <exception cref="ExprValidationException"> /// Variable ' + defineItem.Identifier + ' has already been defined /// or /// An aggregate function may not appear in a DEFINE clause /// or /// Failed to validate condition expression for variable ' + defineItem.Identifier + ': + ex.Message /// or /// Aggregation functions in the measure-clause must only refer to properties of exactly one group variable returning multiple events /// or /// Aggregation functions in the measure-clause must refer to one or more properties of exactly one group variable returning multiple events /// or /// The measures clause requires that each expression utilizes the AS keyword to assign a column name /// </exception> /// <throws>ExprValidationException if validation fails</throws> public EventRowRegexNFAViewFactory( ViewFactoryChain viewChain, MatchRecognizeSpec matchRecognizeSpec, AgentInstanceContext agentInstanceContext, bool isUnbound, Attribute[] annotations, ConfigurationEngineDefaults.MatchRecognizeConfig matchRecognizeConfig) { var parentViewType = viewChain.EventType; _matchRecognizeSpec = matchRecognizeSpec; _isUnbound = isUnbound; _isIterateOnly = HintEnum.ITERATE_ONLY.GetHint(annotations) != null; _matchRecognizeConfig = matchRecognizeConfig; var statementContext = agentInstanceContext.StatementContext; // Expand repeats and permutations _expandedPatternNode = RegexPatternExpandUtil.Expand(matchRecognizeSpec.Pattern); // Determine single-row and multiple-row variables _variablesSingle = new LinkedHashSet <string>(); ISet <string> variablesMultiple = new LinkedHashSet <string>(); EventRowRegexHelper.RecursiveInspectVariables(_expandedPatternNode, false, _variablesSingle, variablesMultiple); // each variable gets associated with a stream number (multiple-row variables as well to hold the current event for the expression). var streamNum = 0; _variableStreams = new LinkedHashMap <string, Pair <int, bool> >(); foreach (var variableSingle in _variablesSingle) { _variableStreams.Put(variableSingle, new Pair <int, bool>(streamNum, false)); streamNum++; } foreach (var variableMultiple in variablesMultiple) { _variableStreams.Put(variableMultiple, new Pair <int, bool>(streamNum, true)); streamNum++; } // mapping of stream to variable _streamVariables = new SortedDictionary <int, string>(); foreach (var entry in _variableStreams) { _streamVariables.Put(entry.Value.First, entry.Key); } // determine visibility rules var visibility = EventRowRegexHelper.DetermineVisibility(_expandedPatternNode); // assemble all single-row variables for expression validation var allStreamNames = new string[_variableStreams.Count]; var allTypes = new EventType[_variableStreams.Count]; streamNum = 0; foreach (var variableSingle in _variablesSingle) { allStreamNames[streamNum] = variableSingle; allTypes[streamNum] = parentViewType; streamNum++; } foreach (var variableMultiple in variablesMultiple) { allStreamNames[streamNum] = variableMultiple; allTypes[streamNum] = parentViewType; streamNum++; } // determine type service for use with DEFINE // validate each DEFINE clause expression ISet <string> definedVariables = new HashSet <string>(); IList <ExprAggregateNode> aggregateNodes = new List <ExprAggregateNode>(); var exprEvaluatorContext = new ExprEvaluatorContextStatement(statementContext, false); _isExprRequiresMultimatchState = new bool[_variableStreams.Count]; for (var defineIndex = 0; defineIndex < matchRecognizeSpec.Defines.Count; defineIndex++) { var defineItem = matchRecognizeSpec.Defines[defineIndex]; if (definedVariables.Contains(defineItem.Identifier)) { throw new ExprValidationException("Variable '" + defineItem.Identifier + "' has already been defined"); } definedVariables.Add(defineItem.Identifier); // stream-type visibilities handled here var typeServiceDefines = EventRowRegexNFAViewFactoryHelper.BuildDefineStreamTypeServiceDefine(statementContext, _variableStreams, defineItem, visibility, parentViewType); var exprNodeResult = HandlePreviousFunctions(defineItem.Expression); var validationContext = new ExprValidationContext( typeServiceDefines, statementContext.EngineImportService, statementContext.StatementExtensionServicesContext, null, statementContext.SchedulingService, statementContext.VariableService, statementContext.TableService, exprEvaluatorContext, statementContext.EventAdapterService, statementContext.StatementName, statementContext.StatementId, statementContext.Annotations, statementContext.ContextDescriptor, statementContext.ScriptingService, true, false, true, false, null, false); ExprNode validated; try { // validate validated = ExprNodeUtility.GetValidatedSubtree(ExprNodeOrigin.MATCHRECOGDEFINE, exprNodeResult, validationContext); // check aggregates defineItem.Expression = validated; ExprAggregateNodeUtil.GetAggregatesBottomUp(validated, aggregateNodes); if (!aggregateNodes.IsEmpty()) { throw new ExprValidationException("An aggregate function may not appear in a DEFINE clause"); } } catch (ExprValidationException ex) { throw new ExprValidationException("Failed to validate condition expression for variable '" + defineItem.Identifier + "': " + ex.Message, ex); } // determine access to event properties from multi-matches var visitor = new ExprNodeStreamRequiredVisitor(); validated.Accept(visitor); var streamsRequired = visitor.StreamsRequired; foreach (var streamRequired in streamsRequired) { if (streamRequired >= _variableStreams.Count) { var streamNumIdent = _variableStreams.Get(defineItem.Identifier).First; _isExprRequiresMultimatchState[streamNumIdent] = true; break; } } } _isDefineAsksMultimatches = CollectionUtil.IsAnySet(_isExprRequiresMultimatchState); _defineMultimatchEventBean = _isDefineAsksMultimatches ? EventRowRegexNFAViewFactoryHelper.GetDefineMultimatchBean(statementContext, _variableStreams, parentViewType) : null; // assign "prev" node indexes // Since an expression such as "prior(2, price), prior(8, price)" translates into {2, 8} the relative index is {0, 1}. // Map the expression-supplied index to a relative index var countPrev = 0; foreach (var entry in _callbacksPerIndex) { foreach (var callback in entry.Value) { callback.AssignedIndex = countPrev; } countPrev++; } // determine type service for use with MEASURE IDictionary <string, object> measureTypeDef = new LinkedHashMap <string, object>(); foreach (var variableSingle in _variablesSingle) { measureTypeDef.Put(variableSingle, parentViewType); } foreach (var variableMultiple in variablesMultiple) { measureTypeDef.Put(variableMultiple, new EventType[] { parentViewType }); } var outputEventTypeName = statementContext.StatementId + "_rowrecog"; _compositeEventType = (ObjectArrayEventType)statementContext.EventAdapterService.CreateAnonymousObjectArrayType(outputEventTypeName, measureTypeDef); StreamTypeService typeServiceMeasure = new StreamTypeServiceImpl(_compositeEventType, "MATCH_RECOGNIZE", true, statementContext.EngineURI); // find MEASURE clause aggregations var measureReferencesMultivar = false; IList <ExprAggregateNode> measureAggregateExprNodes = new List <ExprAggregateNode>(); foreach (var measureItem in matchRecognizeSpec.Measures) { ExprAggregateNodeUtil.GetAggregatesBottomUp(measureItem.Expr, measureAggregateExprNodes); } if (!measureAggregateExprNodes.IsEmpty()) { var isIStreamOnly = new bool[allStreamNames.Length]; CompatExtensions.Fill(isIStreamOnly, true); var typeServiceAggregateMeasure = new StreamTypeServiceImpl(allTypes, allStreamNames, isIStreamOnly, statementContext.EngineURI, false); var measureExprAggNodesPerStream = new Dictionary <int, IList <ExprAggregateNode> >(); foreach (var aggregateNode in measureAggregateExprNodes) { // validate absence of group-by aggregateNode.ValidatePositionals(); if (aggregateNode.OptionalLocalGroupBy != null) { throw new ExprValidationException("Match-recognize does not allow aggregation functions to specify a group-by"); } // validate node and params var count = 0; var visitor = new ExprNodeIdentifierVisitor(true); var validationContext = new ExprValidationContext( typeServiceAggregateMeasure, statementContext.EngineImportService, statementContext.StatementExtensionServicesContext, null, statementContext.SchedulingService, statementContext.VariableService, statementContext.TableService, exprEvaluatorContext, statementContext.EventAdapterService, statementContext.StatementName, statementContext.StatementId, statementContext.Annotations, statementContext.ContextDescriptor, statementContext.ScriptingService, false, false, true, false, null, false); for (int ii = 0; ii < aggregateNode.ChildNodes.Count; ii++) { var child = aggregateNode.ChildNodes[ii]; var validated = ExprNodeUtility.GetValidatedSubtree(ExprNodeOrigin.MATCHRECOGMEASURE, child, validationContext); validated.Accept(visitor); aggregateNode.SetChildNode(count++, new ExprNodeValidated(validated)); } validationContext = new ExprValidationContext( typeServiceMeasure, statementContext.EngineImportService, statementContext.StatementExtensionServicesContext, null, statementContext.SchedulingService, statementContext.VariableService, statementContext.TableService, exprEvaluatorContext, statementContext.EventAdapterService, statementContext.StatementName, statementContext.StatementId, statementContext.Annotations, statementContext.ContextDescriptor, statementContext.ScriptingService, false, false, true, false, null, false); aggregateNode.Validate(validationContext); // verify properties used within the aggregation var aggregatedStreams = new HashSet <int>(); foreach (var pair in visitor.ExprProperties) { aggregatedStreams.Add(pair.First); } int?multipleVarStream = null; foreach (int streamNumAggregated in aggregatedStreams) { var variable = _streamVariables.Get(streamNumAggregated); if (variablesMultiple.Contains(variable)) { measureReferencesMultivar = true; if (multipleVarStream == null) { multipleVarStream = streamNumAggregated; continue; } throw new ExprValidationException("Aggregation functions in the measure-clause must only refer to properties of exactly one group variable returning multiple events"); } } if (multipleVarStream == null) { throw new ExprValidationException("Aggregation functions in the measure-clause must refer to one or more properties of exactly one group variable returning multiple events"); } var aggNodesForStream = measureExprAggNodesPerStream.Get(multipleVarStream.Value); if (aggNodesForStream == null) { aggNodesForStream = new List <ExprAggregateNode>(); measureExprAggNodesPerStream.Put(multipleVarStream.Value, aggNodesForStream); } aggNodesForStream.Add(aggregateNode); } var factoryDesc = AggregationServiceFactoryFactory.GetServiceMatchRecognize(_streamVariables.Count, measureExprAggNodesPerStream, typeServiceAggregateMeasure.EventTypes); _aggregationService = factoryDesc.AggregationServiceFactory.MakeService(agentInstanceContext); _aggregationExpressions = factoryDesc.Expressions; } else { _aggregationService = null; _aggregationExpressions = Collections.GetEmptyList <AggregationServiceAggExpressionDesc>(); } // validate each MEASURE clause expression IDictionary <string, object> rowTypeDef = new LinkedHashMap <string, object>(); var streamRefVisitor = new ExprNodeStreamUseCollectVisitor(); foreach (var measureItem in matchRecognizeSpec.Measures) { if (measureItem.Name == null) { throw new ExprValidationException("The measures clause requires that each expression utilizes the AS keyword to assign a column name"); } var validated = ValidateMeasureClause(measureItem.Expr, typeServiceMeasure, variablesMultiple, _variablesSingle, statementContext); measureItem.Expr = validated; rowTypeDef.Put(measureItem.Name, validated.ExprEvaluator.ReturnType); validated.Accept(streamRefVisitor); } // Determine if any of the multi-var streams are referenced in the measures (non-aggregated only) foreach (var @ref in streamRefVisitor.Referenced) { var rootPropName = @ref.RootPropertyNameIfAny; if (rootPropName != null) { if (variablesMultiple.Contains(rootPropName)) { measureReferencesMultivar = true; break; } } var streamRequired = @ref.StreamReferencedIfAny; if (streamRequired != null) { var streamVariable = _streamVariables.Get(streamRequired.Value); if (streamVariable != null) { var def = _variableStreams.Get(streamVariable); if (def != null && def.Second) { measureReferencesMultivar = true; break; } } } } _isCollectMultimatches = measureReferencesMultivar || _isDefineAsksMultimatches; // create rowevent type var rowEventTypeName = statementContext.StatementId + "_rowrecogrow"; _rowEventType = statementContext.EventAdapterService.CreateAnonymousMapType(rowEventTypeName, rowTypeDef, true); // validate partition-by expressions, if any if (!matchRecognizeSpec.PartitionByExpressions.IsEmpty()) { var typeServicePartition = new StreamTypeServiceImpl(parentViewType, "MATCH_RECOGNIZE_PARTITION", true, statementContext.EngineURI); var validated = new List <ExprNode>(); var validationContext = new ExprValidationContext( typeServicePartition, statementContext.EngineImportService, statementContext.StatementExtensionServicesContext, null, statementContext.SchedulingService, statementContext.VariableService, statementContext.TableService, exprEvaluatorContext, statementContext.EventAdapterService, statementContext.StatementName, statementContext.StatementId, statementContext.Annotations, statementContext.ContextDescriptor, statementContext.ScriptingService, false, false, true, false, null, false); foreach (var partitionExpr in matchRecognizeSpec.PartitionByExpressions) { validated.Add(ExprNodeUtility.GetValidatedSubtree(ExprNodeOrigin.MATCHRECOGPARTITION, partitionExpr, validationContext)); } matchRecognizeSpec.PartitionByExpressions = validated; } // validate interval if present if (matchRecognizeSpec.Interval != null) { var validationContext = new ExprValidationContext( new StreamTypeServiceImpl(statementContext.EngineURI, false), statementContext.EngineImportService, statementContext.StatementExtensionServicesContext, null, statementContext.SchedulingService, statementContext.VariableService, statementContext.TableService, exprEvaluatorContext, statementContext.EventAdapterService, statementContext.StatementName, statementContext.StatementId, statementContext.Annotations, statementContext.ContextDescriptor, statementContext.ScriptingService, false, false, true, false, null, false); matchRecognizeSpec.Interval.Validate(validationContext); } }
public static RowRecogPlan ValidateAndPlan( IContainer container, EventType parentEventType, bool unbound, StatementBaseInfo @base, StatementCompileTimeServices services) { var statementRawInfo = @base.StatementRawInfo; var matchRecognizeSpec = @base.StatementSpec.Raw.MatchRecognizeSpec; var annotations = statementRawInfo.Annotations; var iterateOnly = HintEnum.ITERATE_ONLY.GetHint(annotations) != null; var additionalForgeables = new List<StmtClassForgeableFactory>(); // Expanded pattern already there RowRecogExprNode expandedPatternNode = matchRecognizeSpec.Pattern; // Determine single-row and multiple-row variables var variablesSingle = new LinkedHashSet<string>(); var variablesMultiple = new LinkedHashSet<string>(); RowRecogHelper.RecursiveInspectVariables(expandedPatternNode, false, variablesSingle, variablesMultiple); // each variable gets associated with a stream number (multiple-row variables as well to hold the current event for the expression). var streamNum = 0; var variableStreams = new LinkedHashMap<string, Pair<int, bool>>(); foreach (var variableSingle in variablesSingle) { variableStreams.Put(variableSingle, new Pair<int, bool>(streamNum, false)); streamNum++; } foreach (var variableMultiple in variablesMultiple) { variableStreams.Put(variableMultiple, new Pair<int, bool>(streamNum, true)); streamNum++; } // mapping of stream to variable var streamVariables = new OrderedListDictionary<int, string>(); foreach (var entry in variableStreams) { streamVariables.Put(entry.Value.First, entry.Key); } // determine visibility rules var visibility = RowRecogHelper.DetermineVisibility(expandedPatternNode); // assemble all single-row variables for expression validation var allStreamNames = new string[variableStreams.Count]; var allTypes = new EventType[variableStreams.Count]; streamNum = 0; foreach (var variableSingle in variablesSingle) { allStreamNames[streamNum] = variableSingle; allTypes[streamNum] = parentEventType; streamNum++; } foreach (var variableMultiple in variablesMultiple) { allStreamNames[streamNum] = variableMultiple; allTypes[streamNum] = parentEventType; streamNum++; } // determine type service for use with DEFINE // validate each DEFINE clause expression ISet<string> definedVariables = new HashSet<string>(); IList<ExprAggregateNode> aggregateNodes = new List<ExprAggregateNode>(); var isExprRequiresMultimatchState = new bool[variableStreams.Count]; var previousNodes = new OrderedListDictionary<int, IList<ExprPreviousMatchRecognizeNode>>(); for (var defineIndex = 0; defineIndex < matchRecognizeSpec.Defines.Count; defineIndex++) { MatchRecognizeDefineItem defineItem = matchRecognizeSpec.Defines[defineIndex]; if (definedVariables.Contains(defineItem.Identifier)) { throw new ExprValidationException( "Variable '" + defineItem.Identifier + "' has already been defined"); } definedVariables.Add(defineItem.Identifier); // stream-type visibilities handled here var typeServiceDefines = BuildDefineStreamTypeServiceDefine( defineIndex, variableStreams, defineItem, visibility, parentEventType, statementRawInfo, services); var exprNodeResult = HandlePreviousFunctions(defineItem.Expression, previousNodes); var validationContext = new ExprValidationContextBuilder(typeServiceDefines, statementRawInfo, services) .WithAllowBindingConsumption(true) .WithDisablePropertyExpressionEventCollCache(true) .Build(); ExprNode validated; try { // validate validated = ExprNodeUtilityValidate.GetValidatedSubtree( ExprNodeOrigin.MATCHRECOGDEFINE, exprNodeResult, validationContext); // check aggregates defineItem.Expression = validated; ExprAggregateNodeUtil.GetAggregatesBottomUp(validated, aggregateNodes); if (!aggregateNodes.IsEmpty()) { throw new ExprValidationException("An aggregate function may not appear in a DEFINE clause"); } } catch (ExprValidationException ex) { throw new ExprValidationException( "Failed to validate condition expression for variable '" + defineItem.Identifier + "': " + ex.Message, ex); } // determine access to event properties from multi-matches var visitor = new ExprNodeStreamRequiredVisitor(); validated.Accept(visitor); var streamsRequired = visitor.StreamsRequired; foreach (var streamRequired in streamsRequired) { if (streamRequired >= variableStreams.Count) { var streamNumIdent = variableStreams.Get(defineItem.Identifier).First; isExprRequiresMultimatchState[streamNumIdent] = true; break; } } } var defineAsksMultimatches = CollectionUtil.IsAnySet(isExprRequiresMultimatchState); // determine type service for use with MEASURE IDictionary<string, object> measureTypeDef = new LinkedHashMap<string, object>(); foreach (var variableSingle in variablesSingle) { measureTypeDef.Put(variableSingle, parentEventType); } foreach (var variableMultiple in variablesMultiple) { measureTypeDef.Put(variableMultiple, new[] {parentEventType}); } var compositeTypeName = services.EventTypeNameGeneratorStatement.AnonymousRowrecogCompositeName; var compositeTypeMetadata = new EventTypeMetadata( compositeTypeName, @base.ModuleName, EventTypeTypeClass.MATCHRECOGDERIVED, EventTypeApplicationType.OBJECTARR, NameAccessModifier.TRANSIENT, EventTypeBusModifier.NONBUS, false, EventTypeIdPair.Unassigned()); var compositeEventType = BaseNestableEventUtil.MakeOATypeCompileTime( compositeTypeMetadata, measureTypeDef, null, null, null, null, services.BeanEventTypeFactoryPrivate, services.EventTypeCompileTimeResolver); services.EventTypeCompileTimeRegistry.NewType(compositeEventType); StreamTypeService compositeTypeServiceMeasure = new StreamTypeServiceImpl(compositeEventType, "MATCH_RECOGNIZE", true); // find MEASURE clause aggregations var measureReferencesMultivar = false; IList<ExprAggregateNode> measureAggregateExprNodes = new List<ExprAggregateNode>(); foreach (var measureItem in matchRecognizeSpec.Measures) { ExprAggregateNodeUtil.GetAggregatesBottomUp(measureItem.Expr, measureAggregateExprNodes); } AggregationServiceForgeDesc[] aggregationServices = null; if (!measureAggregateExprNodes.IsEmpty()) { aggregationServices = PlanAggregations( measureAggregateExprNodes, compositeTypeServiceMeasure, allStreamNames, allTypes, streamVariables, variablesMultiple, @base, services); foreach (AggregationServiceForgeDesc svc in aggregationServices) { if (svc != null) { additionalForgeables.AddAll(svc.AdditionalForgeables); } } } // validate each MEASURE clause expression IDictionary<string, object> rowTypeDef = new LinkedHashMap<string, object>(); var streamRefVisitor = new ExprNodeStreamUseCollectVisitor(); foreach (var measureItem in matchRecognizeSpec.Measures) { if (measureItem.Name == null) { throw new ExprValidationException( "The measures clause requires that each expression utilizes the AS keyword to assign a column name"); } var validated = ValidateMeasureClause( measureItem.Expr, compositeTypeServiceMeasure, variablesMultiple, variablesSingle, statementRawInfo, services); measureItem.Expr = validated; rowTypeDef.Put(measureItem.Name, validated.Forge.EvaluationType); validated.Accept(streamRefVisitor); } // Determine if any of the multi-var streams are referenced in the measures (non-aggregated only) foreach (var @ref in streamRefVisitor.Referenced) { var rootPropName = @ref.RootPropertyNameIfAny; if (rootPropName != null) { if (variablesMultiple.Contains(rootPropName)) { measureReferencesMultivar = true; break; } } var streamRequired = @ref.StreamReferencedIfAny; if (streamRequired != null) { var streamVariable = streamVariables.Get(streamRequired.Value); if (streamVariable != null) { var def = variableStreams.Get(streamVariable); if (def != null && def.Second) { measureReferencesMultivar = true; break; } } } } var collectMultimatches = measureReferencesMultivar || defineAsksMultimatches; // create rowevent type var rowTypeName = services.EventTypeNameGeneratorStatement.AnonymousRowrecogRowName; var rowTypeMetadata = new EventTypeMetadata( rowTypeName, @base.ModuleName, EventTypeTypeClass.MATCHRECOGDERIVED, EventTypeApplicationType.MAP, NameAccessModifier.TRANSIENT, EventTypeBusModifier.NONBUS, false, EventTypeIdPair.Unassigned()); var rowEventType = BaseNestableEventUtil.MakeMapTypeCompileTime( rowTypeMetadata, rowTypeDef, null, null, null, null, services.BeanEventTypeFactoryPrivate, services.EventTypeCompileTimeResolver); services.EventTypeCompileTimeRegistry.NewType(rowEventType); // validate partition-by expressions, if any ExprNode[] partitionBy; MultiKeyClassRef partitionMultiKey; if (!matchRecognizeSpec.PartitionByExpressions.IsEmpty()) { StreamTypeService typeServicePartition = new StreamTypeServiceImpl( parentEventType, "MATCH_RECOGNIZE_PARTITION", true); IList<ExprNode> validated = new List<ExprNode>(); var validationContext = new ExprValidationContextBuilder(typeServicePartition, statementRawInfo, services) .WithAllowBindingConsumption(true) .Build(); foreach (var partitionExpr in matchRecognizeSpec.PartitionByExpressions) { validated.Add( ExprNodeUtilityValidate.GetValidatedSubtree( ExprNodeOrigin.MATCHRECOGPARTITION, partitionExpr, validationContext)); } matchRecognizeSpec.PartitionByExpressions = validated; partitionBy = ExprNodeUtilityQuery.ToArray(validated); MultiKeyPlan multiKeyPlan = MultiKeyPlanner.PlanMultiKey(partitionBy, false, @base.StatementRawInfo, services.SerdeResolver); partitionMultiKey = multiKeyPlan.ClassRef; additionalForgeables.AddAll(multiKeyPlan.MultiKeyForgeables); } else { partitionBy = null; partitionMultiKey = null; } // validate interval if present if (matchRecognizeSpec.Interval != null) { var validationContext = new ExprValidationContextBuilder(new StreamTypeServiceImpl(false), statementRawInfo, services) .WithAllowBindingConsumption(true) .Build(); var validated = (ExprTimePeriod) ExprNodeUtilityValidate.GetValidatedSubtree( ExprNodeOrigin.MATCHRECOGINTERVAL, matchRecognizeSpec.Interval.TimePeriodExpr, validationContext); matchRecognizeSpec.Interval.TimePeriodExpr = validated; } // compile variable definition expressions IDictionary<string, ExprNode> variableDefinitions = new Dictionary<string, ExprNode>(); foreach (var defineItem in matchRecognizeSpec.Defines) { variableDefinitions.Put(defineItem.Identifier, defineItem.Expression); } // create evaluators var columnNames = new string[matchRecognizeSpec.Measures.Count]; var columnForges = new ExprNode[matchRecognizeSpec.Measures.Count]; var count = 0; foreach (var measureItem in matchRecognizeSpec.Measures) { columnNames[count] = measureItem.Name; columnForges[count] = measureItem.Expr; count++; } // build states var strand = RowRecogHelper.BuildStartStates( expandedPatternNode, variableDefinitions, variableStreams, isExprRequiresMultimatchState); var startStates = strand.StartStates.ToArray(); RowRecogNFAStateForge[] allStates = strand.AllStates.ToArray(); if (Log.IsInfoEnabled) { Log.Info("NFA tree:\n" + RowRecogNFAViewUtil.Print(startStates)); } // determine names of multimatching variables string[] multimatchVariablesArray; int[] multimatchStreamNumToVariable; int[] multimatchVariableToStreamNum; if (variablesSingle.Count == variableStreams.Count) { multimatchVariablesArray = new string[0]; multimatchStreamNumToVariable = new int[0]; multimatchVariableToStreamNum = new int[0]; } else { multimatchVariablesArray = new string[variableStreams.Count - variablesSingle.Count]; multimatchVariableToStreamNum = new int[multimatchVariablesArray.Length]; multimatchStreamNumToVariable = new int[variableStreams.Count]; CompatExtensions.Fill(multimatchStreamNumToVariable, -1); count = 0; foreach (var entry in variableStreams) { if (entry.Value.Second) { var index = count; multimatchVariablesArray[index] = entry.Key; multimatchVariableToStreamNum[index] = entry.Value.First; multimatchStreamNumToVariable[entry.Value.First] = index; count++; } } } var numEventsEventsPerStreamDefine = defineAsksMultimatches ? variableStreams.Count + 1 : variableStreams.Count; // determine interval-or-terminated var orTerminated = matchRecognizeSpec.Interval != null && matchRecognizeSpec.Interval.IsOrTerminated; TimePeriodComputeForge intervalCompute = null; if (matchRecognizeSpec.Interval != null) { intervalCompute = matchRecognizeSpec.Interval.TimePeriodExpr.TimePeriodComputeForge; } EventType multimatchEventType = null; if (defineAsksMultimatches) { multimatchEventType = GetDefineMultimatchEventType(variableStreams, parentEventType, @base, services); } // determine previous-access indexes and assign "prev" node indexes // Since an expression such as "prior(2, price), prior(8, price)" translates into {2, 8} the relative index is {0, 1}. // Map the expression-supplied index to a relative index int[] previousRandomAccessIndexes = null; if (!previousNodes.IsEmpty()) { previousRandomAccessIndexes = new int[previousNodes.Count]; var countPrev = 0; foreach (var entry in previousNodes) { previousRandomAccessIndexes[countPrev] = entry.Key; foreach (var callback in entry.Value) { callback.AssignedIndex = countPrev; } countPrev++; } } RowRecogDescForge forge = new RowRecogDescForge( parentEventType, rowEventType, compositeEventType, multimatchEventType, multimatchStreamNumToVariable, multimatchVariableToStreamNum, partitionBy, partitionMultiKey, variableStreams, matchRecognizeSpec.Interval != null, iterateOnly, unbound, orTerminated, collectMultimatches, defineAsksMultimatches, numEventsEventsPerStreamDefine, multimatchVariablesArray, startStates, allStates, matchRecognizeSpec.IsAllMatches, matchRecognizeSpec.Skip.Skip, columnForges, columnNames, intervalCompute, previousRandomAccessIndexes, aggregationServices); return new RowRecogPlan(forge, additionalForgeables); }