public HistoricalEventViewableMethodForge( int streamNum, EventType eventType, MethodStreamSpec methodStreamSpec, MethodPollingViewableMeta metadata) : base(streamNum, eventType) { this.methodStreamSpec = methodStreamSpec; this.metadata = metadata; }
public static HistoricalEventViewableMethodForge CreateMethodStatementView( int stream, MethodStreamSpec methodStreamSpec, StatementBaseInfo @base, StatementCompileTimeServices services) { var variableMetaData = services.VariableCompileTimeResolver.Resolve(methodStreamSpec.ClassName); MethodPollingExecStrategyEnum strategy; MethodInfo methodReflection = null; string eventTypeNameProvidedUDFOrScript = null; var contextName = @base.StatementSpec.Raw.OptionalContextName; var classpathImportService = services.ImportServiceCompileTime; // see if this is a script in the from-clause ExprNodeScript scriptExpression = null; if (methodStreamSpec.ClassName == null && methodStreamSpec.MethodName != null) { var script = services.ScriptCompileTimeResolver.Resolve( methodStreamSpec.MethodName, methodStreamSpec.Expressions.Count); if (script != null) { scriptExpression = new ExprNodeScript( services.Configuration.Compiler.Scripts.DefaultDialect, script, methodStreamSpec.Expressions); } } try { if (scriptExpression != null) { eventTypeNameProvidedUDFOrScript = scriptExpression.EventTypeNameAnnotation; strategy = MethodPollingExecStrategyEnum.TARGET_SCRIPT; EPLValidationUtil.ValidateSimpleGetSubtree( ExprNodeOrigin.METHODINVJOIN, scriptExpression, null, false, @base.StatementRawInfo, services); } else if (variableMetaData != null) { var variableName = variableMetaData.VariableName; if (variableMetaData.OptionalContextName != null) { if (contextName == null || !contextName.Equals(variableMetaData.OptionalContextName)) { throw new ExprValidationException( "Variable by name '" + variableMetaData.VariableName + "' has been declared for context '" + variableMetaData.OptionalContextName + "' and can only be used within the same context"); } strategy = MethodPollingExecStrategyEnum.TARGET_VAR_CONTEXT; } else { if (variableMetaData.IsConstant) { strategy = MethodPollingExecStrategyEnum.TARGET_CONST; } else { strategy = MethodPollingExecStrategyEnum.TARGET_VAR; } } methodReflection = classpathImportService.ResolveNonStaticMethodOverloadChecked( variableMetaData.Type, methodStreamSpec.MethodName); } else if (methodStreamSpec.ClassName == null) { // must be either UDF or script Pair<Type, ImportSingleRowDesc> udf; try { udf = classpathImportService.ResolveSingleRow( methodStreamSpec.MethodName, services.ClassProvidedExtension); } catch (ImportException ex) { throw new ExprValidationException( "Failed to find user-defined function '" + methodStreamSpec.MethodName + "': " + ex.Message, ex); } methodReflection = classpathImportService.ResolveMethodOverloadChecked( udf.First, methodStreamSpec.MethodName); eventTypeNameProvidedUDFOrScript = udf.Second.OptionalEventTypeName; strategy = MethodPollingExecStrategyEnum.TARGET_CONST; } else { methodReflection = classpathImportService.ResolveMethodOverloadChecked( methodStreamSpec.ClassName, methodStreamSpec.MethodName, services.ClassProvidedExtension); strategy = MethodPollingExecStrategyEnum.TARGET_CONST; } } catch (ExprValidationException) { throw; } catch (Exception e) { throw new ExprValidationException(e.Message, e); } Type methodProviderClass = null; Type beanClass; IDictionary<string, object> oaType = null; IDictionary<string, object> mapType = null; var isCollection = false; var isEnumerator = false; EventType eventType; EventType eventTypeWhenMethodReturnsEventBeans = null; var isStaticMethod = false; if (methodReflection != null) { methodProviderClass = methodReflection.DeclaringType; isStaticMethod = variableMetaData == null; // Determine object type returned by method beanClass = methodReflection.ReturnType; if (beanClass == typeof(void) || beanClass == typeof(void) || beanClass.IsBuiltinDataType()) { throw new ExprValidationException( "Invalid return type for static method '" + methodReflection.Name + "' of class '" + methodStreamSpec.ClassName + "', expecting a type"); } if (methodReflection.ReturnType.IsArray && methodReflection.ReturnType.GetElementType() != typeof(EventBean)) { beanClass = methodReflection.ReturnType.GetElementType(); } isCollection = beanClass.IsGenericCollection() && !beanClass.IsGenericDictionary(); Type collectionClass = null; if (isCollection) { collectionClass = TypeHelper.GetGenericReturnType(methodReflection, true); beanClass = collectionClass; } isEnumerator = beanClass.IsGenericEnumerator(); Type enumerator = null; if (isEnumerator) { enumerator = TypeHelper.GetGenericReturnType(methodReflection, true); beanClass = enumerator; } // If the method returns a Map, look up the map type string mapTypeName = null; if (methodReflection.ReturnType.IsGenericDictionary() || methodReflection.ReturnType.IsArray && methodReflection.ReturnType.GetElementType().IsGenericDictionary() || isCollection && collectionClass.IsGenericDictionary() || isEnumerator && enumerator.IsGenericDictionary()) { MethodMetadataDesc metadata; if (variableMetaData != null) { metadata = GetCheckMetadataVariable( methodStreamSpec.MethodName, variableMetaData, classpathImportService, typeof(IDictionary<string, object>)); } else { metadata = GetCheckMetadataNonVariable( methodStreamSpec.MethodName, methodStreamSpec.ClassName, classpathImportService, typeof(IDictionary<string, object>)); } mapTypeName = metadata.TypeName; mapType = (IDictionary<string, object>) metadata.TypeMetadata; } // If the method returns an Object[] or Object[][], look up the type information string oaTypeName = null; if (methodReflection.ReturnType == typeof(object[]) || methodReflection.ReturnType == typeof(object[][]) || isCollection && collectionClass == typeof(object[]) || isEnumerator && enumerator == typeof(object[])) { MethodMetadataDesc metadata; if (variableMetaData != null) { metadata = GetCheckMetadataVariable( methodStreamSpec.MethodName, variableMetaData, classpathImportService, typeof(IDictionary<string, object>)); } else { metadata = GetCheckMetadataNonVariable( methodStreamSpec.MethodName, methodStreamSpec.ClassName, classpathImportService, typeof(IDictionary<string, object>)); } oaTypeName = metadata.TypeName; oaType = (IDictionary<string, object>) metadata.TypeMetadata; } // Determine event type from class and method name // If the method returns EventBean[], require the event type Func<EventTypeApplicationType, EventTypeMetadata> metadataFunction = apptype => { var eventTypeName = services.EventTypeNameGeneratorStatement.GetAnonymousMethodHistorical(stream); return new EventTypeMetadata( eventTypeName, @base.ModuleName, EventTypeTypeClass.METHODPOLLDERIVED, apptype, NameAccessModifier.TRANSIENT, EventTypeBusModifier.NONBUS, false, EventTypeIdPair.Unassigned()); }; if (methodReflection.ReturnType.IsArray && methodReflection.ReturnType.GetElementType() == typeof(EventBean) || isCollection && collectionClass == typeof(EventBean) || isEnumerator && enumerator == typeof(EventBean)) { var typeName = methodStreamSpec.EventTypeName == null ? eventTypeNameProvidedUDFOrScript : methodStreamSpec.EventTypeName; eventType = EventTypeUtility.RequireEventType( "Method", methodReflection.Name, typeName, services.EventTypeCompileTimeResolver); eventTypeWhenMethodReturnsEventBeans = eventType; } else if (mapType != null) { eventType = BaseNestableEventUtil.MakeMapTypeCompileTime( metadataFunction.Invoke(EventTypeApplicationType.MAP), mapType, null, null, null, null, services.BeanEventTypeFactoryPrivate, services.EventTypeCompileTimeResolver); services.EventTypeCompileTimeRegistry.NewType(eventType); } else if (oaType != null) { eventType = BaseNestableEventUtil.MakeOATypeCompileTime( metadataFunction.Invoke(EventTypeApplicationType.OBJECTARR), oaType, null, null, null, null, services.BeanEventTypeFactoryPrivate, services.EventTypeCompileTimeResolver); services.EventTypeCompileTimeRegistry.NewType(eventType); } else { var stem = services.BeanEventTypeStemService.GetCreateStem(beanClass, null); eventType = new BeanEventType( services.Container, stem, metadataFunction.Invoke(EventTypeApplicationType.CLASS), services.BeanEventTypeFactoryPrivate, null, null, null, null); services.EventTypeCompileTimeRegistry.NewType(eventType); } // the @type is only allowed in conjunction with EventBean return types if (methodStreamSpec.EventTypeName != null && eventTypeWhenMethodReturnsEventBeans == null) { throw new ExprValidationException(EventTypeUtility.DisallowedAtTypeMessage()); } } else { var eventTypeName = methodStreamSpec.EventTypeName == null ? scriptExpression.EventTypeNameAnnotation : methodStreamSpec.EventTypeName; eventType = EventTypeUtility.RequireEventType( "Script", scriptExpression.Script.Name, eventTypeName, services.EventTypeCompileTimeResolver); } // metadata var meta = new MethodPollingViewableMeta( methodProviderClass, isStaticMethod, mapType, oaType, strategy, isCollection, isEnumerator, variableMetaData, eventTypeWhenMethodReturnsEventBeans, scriptExpression); return new HistoricalEventViewableMethodForge(stream, eventType, methodStreamSpec, meta); }
public static Pair<MethodTargetStrategyForge, MethodConversionStrategyForge> Plan( MethodPollingViewableMeta metadata, MethodInfo targetMethod, EventType eventType) { MethodTargetStrategyForge target = null; MethodConversionStrategyForge conversion = null; // class-based evaluation if (metadata.MethodProviderClass != null) { // Construct polling strategy as a method invocation MethodPollingExecStrategyEnum strategy = metadata.Strategy; VariableMetaData variable = metadata.Variable; if (variable == null) { target = new MethodTargetStrategyStaticMethodForge(metadata.MethodProviderClass, targetMethod); } else { target = new MethodTargetStrategyVariableForge(variable, targetMethod); } if (metadata.EventTypeEventBeanArray != null) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyEventBeans)); } else if (metadata.OptionalMapType != null) { if (targetMethod.ReturnType.IsArray) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyArrayMap)); } else if (metadata.IsCollection) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyCollectionMap)); } else if (metadata.IsIterator) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyIteratorMap)); } else { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyPlainMap)); } } else if (metadata.OptionalOaType != null) { if (targetMethod.ReturnType == typeof(object[][])) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyArrayOA)); } else if (metadata.IsCollection) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyCollectionOA)); } else if (metadata.IsIterator) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyIteratorOA)); } else { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyPlainOA)); } } else { if (targetMethod.ReturnType.IsArray) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyArrayPONO)); } else if (metadata.IsCollection) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyCollectionPONO)); } else if (metadata.IsIterator) { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyIteratorPONO)); } else { conversion = new MethodConversionStrategyForge( eventType, typeof(MethodConversionStrategyPlainPONO)); } } } else { target = new MethodTargetStrategyScriptForge(metadata.ScriptExpression); conversion = new MethodConversionStrategyForge(eventType, typeof(MethodConversionStrategyScript)); } return new Pair<MethodTargetStrategyForge, MethodConversionStrategyForge>(target, conversion); }