public void SetUp()
{
_eventService = SupportEventAdapterService.Service;
EventType underlyingEventTypeSimple = _eventService.AddBeanType("UnderlyingSimpleBean", typeof(SupportBeanSimple), true, true, true);
EventType underlyingEventTypeCombined = _eventService.AddBeanType("UnderlyingCombinedBean", typeof(SupportBeanCombinedProps), true, true, true);
IDictionary <String, Object> typeMap = new Dictionary <String, Object>();
typeMap["string"] = typeof(string);
typeMap["int"] = typeof(int);
EventTypeMetadata meta = EventTypeMetadata.CreateWrapper("test", true, false, false);
_eventTypeSimple = new WrapperEventType(meta, "mytype", 1, underlyingEventTypeSimple, typeMap, _eventService);
_eventTypeCombined = new WrapperEventType(meta, "mytype", 1, underlyingEventTypeCombined, typeMap, _eventService);
_properties = new Dictionary <String, Object>();
_properties["string"] = "xx";
_properties["int"] = 11;
EventBean wrappedSimple = _eventService.AdapterForObject(new SupportBeanSimple("EventString", 0));
_eventBeanSimple = _eventService.AdapterForTypedWrapper(wrappedSimple, _properties, _eventTypeSimple);
EventBean wrappedCombined = _eventService.AdapterForObject(SupportBeanCombinedProps.MakeDefaultBean());
_eventBeanCombined = _eventService.AdapterForTypedWrapper(wrappedCombined, _properties, _eventTypeCombined);
}
public void AddEventType(string eventTypeName, string eventTypeTypeName)
{
CheckTableExists(eventTypeName);
try {
_eventAdapterService.AddBeanType(eventTypeName, eventTypeTypeName, false, false, true, true);
} catch (EventAdapterException t) {
throw new ConfigurationException(t.Message, t);
}
}
public static ExprDotStaticMethodWrap Make(
MethodInfo method,
EventAdapterService eventAdapterService,
IList <ExprChainedSpec> modifiedChain,
string optionalEventTypeName)
{
if (modifiedChain.IsEmpty() || (!modifiedChain[0].Name.IsEnumerationMethod()))
{
return(null);
}
if (method.ReturnType.IsArray)
{
var componentType = method.ReturnType.GetElementType();
if (componentType == typeof(EventBean))
{
EventType eventType = RequireEventType(method, eventAdapterService, optionalEventTypeName);
return(new ExprDotStaticMethodWrapEventBeanArr(eventType));
}
if (componentType == null || componentType.IsBuiltinDataType())
{
return(new ExprDotStaticMethodWrapArrayScalar(method.Name, componentType));
}
var type = (BeanEventType)eventAdapterService.AddBeanType(componentType.GetDefaultTypeName(), componentType, false, false, false);
return(new ExprDotStaticMethodWrapArrayEvents(eventAdapterService, type));
}
#if DEFUNCT
if (method.ReturnType.IsGenericCollection())
{
var genericType = TypeHelper.GetGenericReturnType(method, true);
if (genericType == null || genericType.IsBuiltinDataType())
{
return(new ExprDotStaticMethodWrapCollection(method.Name, genericType));
}
}
#endif
if (method.ReturnType.IsGenericEnumerable())
{
var genericType = TypeHelper.GetGenericReturnType(method, true);
if (genericType == typeof(EventBean))
{
EventType eventType = RequireEventType(method, eventAdapterService, optionalEventTypeName);
return(new ExprDotStaticMethodWrapEventBeanColl(eventType));
}
if (genericType == null || genericType.IsBuiltinDataType())
{
return(new ExprDotStaticMethodWrapIterableScalar(method.Name, genericType));
}
var type = (BeanEventType)eventAdapterService.AddBeanType(genericType.GetDefaultTypeName(), genericType, false, false, false);
return(new ExprDotStaticMethodWrapIterableEvents(eventAdapterService, type));
}
return(null);
}
public void SetUp()
{
_container = SupportContainer.Reset();
_eventSource = _container.Resolve <EventAdapterService>();
_types = new EventType[5];
_types[0] = _eventSource.AddBeanType("D1", typeof(SupportDeltaOne), false, false, false);
_types[1] = _eventSource.AddBeanType("D2", typeof(SupportDeltaTwo), false, false, false);
_types[2] = _eventSource.AddBeanType("D3", typeof(SupportDeltaThree), false, false, false);
_types[3] = _eventSource.AddBeanType("D4", typeof(SupportDeltaFour), false, false, false);
_types[4] = _eventSource.AddBeanType("D5", typeof(SupportDeltaFive), false, false, false);
}
public static EPLTreeWalkerListener ParseAndWalkEPL(String expression, EngineImportService engineImportService, VariableService variableService)
{
Log.Debug(".parseAndWalk Trying text=" + expression);
Pair <ITree, CommonTokenStream> ast = SupportParserHelper.ParseEPL(expression);
Log.Debug(".parseAndWalk success, tree walking...");
SupportParserHelper.DisplayAST(ast.First);
EventAdapterService eventAdapterService = SupportEventAdapterService.Service;
eventAdapterService.AddBeanType("SupportBean_N", typeof(SupportBean_N), true, true, true);
EPLTreeWalkerListener listener = SupportEPLTreeWalkerFactory.MakeWalker(ast.Second, engineImportService, variableService);
ParseTreeWalker walker = new ParseTreeWalker(); // create standard walker
walker.Walk(listener, (IParseTree)ast.First); // initiate walk of tree with listener
return(listener);
}
/// <summary>
/// Creates an event type from the query meta data.
/// </summary>
/// <param name="statementId">The statement id.</param>
/// <param name="streamNumber">The stream number.</param>
/// <param name="queryMetaData">The query meta data.</param>
/// <param name="eventAdapterService">The event adapter service.</param>
/// <param name="databaseStreamSpec">The database stream spec.</param>
/// <param name="columnTypeConversionHook">The column type conversion hook.</param>
/// <param name="outputRowConversionHook">The output row conversion hook.</param>
/// <returns></returns>
private static EventType CreateEventType(
int statementId,
int streamNumber,
QueryMetaData queryMetaData,
EventAdapterService eventAdapterService,
DBStatementStreamSpec databaseStreamSpec,
Func <SQLColumnTypeContext, Type> columnTypeConversionHook,
Func <SQLOutputRowTypeContext, Type> outputRowConversionHook)
{
var columnNum = 1;
var eventTypeFields = new Dictionary <String, Object>();
foreach (var entry in queryMetaData.OutputParameters)
{
var name = entry.Key;
var dbOutputDesc = entry.Value;
Type clazz;
if (dbOutputDesc.OptionalBinding != null)
{
clazz = dbOutputDesc.OptionalBinding.DataType;
}
else
{
clazz = dbOutputDesc.DataType;
}
if (columnTypeConversionHook != null)
{
var newValue = columnTypeConversionHook.Invoke(
new SQLColumnTypeContext(
databaseStreamSpec.DatabaseName,
databaseStreamSpec.SqlWithSubsParams,
name, clazz,
dbOutputDesc.SqlType,
columnNum));
if (newValue != null)
{
clazz = newValue;
}
}
eventTypeFields[name] = clazz.GetBoxedType();
columnNum++;
}
EventType eventType;
if (outputRowConversionHook == null)
{
var outputEventType = statementId + "_dbpoll_" + streamNumber;
eventType = eventAdapterService.CreateAnonymousMapType(outputEventType, eventTypeFields, true);
}
else
{
var carrierClass = outputRowConversionHook.Invoke(
new SQLOutputRowTypeContext(
databaseStreamSpec.DatabaseName,
databaseStreamSpec.SqlWithSubsParams,
eventTypeFields));
if (carrierClass == null)
{
throw new ExprValidationException("Output row conversion hook returned no type");
}
eventType = eventAdapterService.AddBeanType(carrierClass.FullName, carrierClass, false, false, false);
}
return(eventType);
}
public EventPropertyGetterSPI GetGetterSPI(string propertyName)
{
var desc = _propertyDesc.Get(propertyName);
if (desc != null)
{
return(desc.RevisionGetter);
}
// dynamic property names note allowed
if (propertyName.IndexOf('?') != -1)
{
return(null);
}
// see if this is a nested property
var index = ASTUtil.UnescapedIndexOfDot(propertyName);
if (index == -1)
{
var prop = PropertyParser.ParseAndWalkLaxToSimple(propertyName);
if (prop is SimpleProperty)
{
// there is no such property since it wasn't found earlier
return(null);
}
string atomic = null;
if (prop is IndexedProperty)
{
var indexedprop = (IndexedProperty)prop;
atomic = indexedprop.PropertyNameAtomic;
}
if (prop is MappedProperty)
{
var indexedprop = (MappedProperty)prop;
atomic = indexedprop.PropertyNameAtomic;
}
desc = _propertyDesc.Get(atomic);
if (desc == null)
{
return(null);
}
if (!(desc.PropertyType is Type))
{
return(null);
}
var nestedClass = (Type)desc.PropertyType;
var complexProperty = (BeanEventType)_eventAdapterService.AddBeanType(nestedClass.GetDefaultTypeName(), nestedClass, false, false, false);
return(prop.GetGetter(complexProperty, _eventAdapterService));
}
// Map event types allow 2 types of properties inside:
// - a property that is a Java object is interrogated via bean property getters and BeanEventType
// - a property that is a Map itself is interrogated via map property getters
// Take apart the nested property into a map key and a nested value class property name
var propertyMap = ASTUtil.UnescapeDot(propertyName.Substring(0, index));
var propertyNested = propertyName.Substring(index + 1);
desc = _propertyDesc.Get(propertyMap);
if (desc == null)
{
return(null); // prefix not a known property
}
// only nested classes supported for revision event types since deep property information not currently exposed by EventType
if (desc.PropertyType is Type)
{
// ask the nested class to resolve the property
var simpleClass = (Type)desc.PropertyType;
var nestedEventType = (EventTypeSPI)_eventAdapterService.AddBeanType(
simpleClass.Name, simpleClass, false, false, false);
var nestedGetter = nestedEventType.GetGetterSPI(propertyNested);
if (nestedGetter == null)
{
return(null);
}
// construct getter for nested property
return(new RevisionNestedPropertyGetter(desc.RevisionGetter, nestedGetter, _eventAdapterService));
}
else
{
return(null);
}
}
public void CreateNewVariable(string optionalContextName, string variableName, string variableType, bool constant, bool array, bool arrayOfPrimitive, object value, EngineImportService engineImportService)
{
// Determime the variable type
var primitiveType = TypeHelper.GetPrimitiveTypeForName(variableType);
var type = TypeHelper.GetTypeForSimpleName(variableType);
Type arrayType = null;
EventType eventType = null;
if (type == null)
{
if (variableType.ToLower() == "object")
{
type = typeof(Object);
}
if (type == null)
{
eventType = _eventAdapterService.GetEventTypeByName(variableType);
if (eventType != null)
{
type = eventType.UnderlyingType;
}
}
if (type == null)
{
try
{
type = engineImportService.ResolveType(variableType, false);
if (array)
{
arrayType = TypeHelper.GetArrayType(type.GetBoxedType());
}
}
catch (EngineImportException e)
{
Log.Debug("Not found '" + type + "': " + e.Message, e);
// expected
}
}
if (type == null)
{
throw new VariableTypeException("Cannot create variable '" + variableName + "', type '" +
variableType + "' is not a recognized type");
}
if (array && eventType != null)
{
throw new VariableTypeException("Cannot create variable '" + variableName + "', type '" +
variableType + "' cannot be declared as an array type");
}
}
else
{
if (array)
{
if (arrayOfPrimitive)
{
if (primitiveType == null)
{
throw new VariableTypeException("Cannot create variable '" + variableName + "', type '" +
variableType + "' is not a primitive type");
}
arrayType = TypeHelper.GetArrayType(primitiveType);
}
else
{
arrayType = TypeHelper.GetArrayType(type.GetBoxedType());
}
}
}
if ((eventType == null) && (!type.IsBuiltinDataType()) && (type != typeof(object)) && !type.IsArray && !type.IsEnum)
{
if (array)
{
throw new VariableTypeException("Cannot create variable '" + variableName + "', type '" +
variableType + "' cannot be declared as an array, only scalar types can be array");
}
eventType = _eventAdapterService.AddBeanType(type.Name, type, false, false, false);
}
if (arrayType != null)
{
type = arrayType;
}
CreateNewVariable(variableName, optionalContextName, type, eventType, constant, value);
}
/// <summary>Resolves a given event name to an event type. </summary>
/// <param name="eventName">is the name to resolve</param>
/// <param name="eventAdapterService">for resolving event types</param>
/// <param name="engineURI">the provider URI</param>
/// <param name="optionalResolutionURIs">is URIs for resolving the event name against plug-inn event representations, if any</param>
/// <returns>event type</returns>
/// <throws>ExprValidationException if the info cannot be resolved</throws>
public static EventType ResolveType(String engineURI, String eventName, EventAdapterService eventAdapterService, IList <Uri> optionalResolutionURIs)
{
var eventType = eventAdapterService.GetEventTypeByName(eventName);
// may already be known
if (eventType != null)
{
return(eventType);
}
var engineURIQualifier = engineURI;
if (engineURI == null || EPServiceProviderConstants.DEFAULT_ENGINE_URI.Equals(engineURI))
{
engineURIQualifier = EPServiceProviderConstants.DEFAULT_ENGINE_URI__QUALIFIER;
}
// The event name can be prefixed by the engine URI, i.e. "select * from default.MyEvent"
if (eventName.StartsWith(engineURIQualifier))
{
var indexDot = eventName.IndexOf('.');
if (indexDot > 0)
{
var eventNameURI = eventName.Substring(0, indexDot);
var eventNameRemainder = eventName.Substring(indexDot + 1);
if (engineURIQualifier.Equals(eventNameURI))
{
eventType = eventAdapterService.GetEventTypeByName(eventNameRemainder);
}
}
}
// may now be known
if (eventType != null)
{
return(eventType);
}
// The type is not known yet, attempt to add as an object type with the same name
String message = null;
try
{
eventType = eventAdapterService.AddBeanType(eventName, eventName, true, false, false, false);
}
catch (EventAdapterException ex)
{
Log.Debug(".resolveType Event type named '" + eventName + "' not resolved as Type event");
message = "Failed to resolve event type: " + ex.Message;
}
// Attempt to use plug-in event types
try
{
eventType = eventAdapterService.AddPlugInEventType(eventName, optionalResolutionURIs, null);
}
catch (EventAdapterException)
{
Log.Debug(".resolveType Event type named '" + eventName + "' not resolved by plug-in event representations");
// remains unresolved
}
if (eventType == null)
{
throw new ExprValidationException(message);
}
return(eventType);
}
/// <summary>Initialize event adapter service for config snapshot. </summary>
/// <param name="eventAdapterService">is events adapter</param>
/// <param name="configSnapshot">is the config snapshot</param>
internal static void Init(EventAdapterService eventAdapterService, ConfigurationInformation configSnapshot)
{
// Extract legacy event type definitions for each event type name, if supplied.
//
// We supply this information as setup information to the event adapter service
// to allow discovery of superclasses and interfaces during event type construction for bean events,
// such that superclasses and interfaces can use the legacy type definitions.
IDictionary <String, ConfigurationEventTypeLegacy> classLegacyInfo = new Dictionary <String, ConfigurationEventTypeLegacy>();
foreach (KeyValuePair <String, String> entry in configSnapshot.EventTypeNames)
{
String typeName = entry.Key;
String className = entry.Value;
ConfigurationEventTypeLegacy legacyDef = configSnapshot.EventTypesLegacy.Get(typeName);
if (legacyDef != null)
{
classLegacyInfo.Put(className, legacyDef);
}
}
eventAdapterService.TypeLegacyConfigs = classLegacyInfo;
eventAdapterService.DefaultPropertyResolutionStyle = configSnapshot.EngineDefaults.EventMetaConfig.ClassPropertyResolutionStyle;
eventAdapterService.DefaultAccessorStyle = configSnapshot.EngineDefaults.EventMetaConfig.DefaultAccessorStyle;
foreach (String typeNamespace in configSnapshot.EventTypeAutoNamePackages)
{
eventAdapterService.AddAutoNamePackage(typeNamespace);
}
// Add from the configuration the event class names
IDictionary <String, String> typeNames = configSnapshot.EventTypeNames;
foreach (KeyValuePair <String, String> entry in typeNames)
{
// Add class
try
{
String typeName = entry.Key;
eventAdapterService.AddBeanType(typeName, entry.Value, false, true, true, true);
}
catch (EventAdapterException ex)
{
throw new ConfigurationException("Error configuring engine: " + ex.Message, ex);
}
}
// Add from the configuration the XML DOM names and type def
IDictionary <String, ConfigurationEventTypeXMLDOM> xmlDOMNames = configSnapshot.EventTypesXMLDOM;
foreach (KeyValuePair <String, ConfigurationEventTypeXMLDOM> entry in xmlDOMNames)
{
SchemaModel schemaModel = null;
if ((entry.Value.SchemaResource != null) || (entry.Value.SchemaText != null))
{
try
{
schemaModel = XSDSchemaMapper.LoadAndMap(entry.Value.SchemaResource, entry.Value.SchemaText, 2);
}
catch (Exception ex)
{
throw new ConfigurationException(ex.Message, ex);
}
}
// Add XML DOM type
try
{
eventAdapterService.AddXMLDOMType(entry.Key, entry.Value, schemaModel, true);
}
catch (EventAdapterException ex)
{
throw new ConfigurationException("Error configuring engine: " + ex.Message, ex);
}
}
// Add maps in dependency order such that supertypes are added before subtypes
ICollection <String> dependentMapOrder;
try
{
var typesReferences = ToTypesReferences(configSnapshot.MapTypeConfigurations);
dependentMapOrder = GraphUtil.GetTopDownOrder(typesReferences);
}
catch (GraphCircularDependencyException e)
{
throw new ConfigurationException("Error configuring engine, dependency graph between map type names is circular: " + e.Message, e);
}
IDictionary <String, Properties> mapNames = configSnapshot.EventTypesMapEvents;
IDictionary <String, IDictionary <String, Object> > nestableMapNames = configSnapshot.EventTypesNestableMapEvents;
dependentMapOrder.AddAll(mapNames.Keys);
dependentMapOrder.AddAll(nestableMapNames.Keys);
try
{
foreach (String mapName in dependentMapOrder)
{
ConfigurationEventTypeMap mapConfig = configSnapshot.MapTypeConfigurations.Get(mapName);
Properties propertiesUnnested = mapNames.Get(mapName);
if (propertiesUnnested != null)
{
IDictionary <String, Object> propertyTypes = CreatePropertyTypes(propertiesUnnested);
IDictionary <String, Object> propertyTypesCompiled = EventTypeUtility.CompileMapTypeProperties(propertyTypes, eventAdapterService);
eventAdapterService.AddNestableMapType(mapName, propertyTypesCompiled, mapConfig, true, true, true, false, false);
}
IDictionary <String, Object> propertiesNestable = nestableMapNames.Get(mapName);
if (propertiesNestable != null)
{
IDictionary <String, Object> propertiesNestableCompiled = EventTypeUtility.CompileMapTypeProperties(propertiesNestable, eventAdapterService);
eventAdapterService.AddNestableMapType(mapName, propertiesNestableCompiled, mapConfig, true, true, true, false, false);
}
}
}
catch (EventAdapterException ex)
{
throw new ConfigurationException("Error configuring engine: " + ex.Message, ex);
}
// Add object-array in dependency order such that supertypes are added before subtypes
ICollection <string> dependentObjectArrayOrder;
try
{
var typesReferences = ToTypesReferences(configSnapshot.ObjectArrayTypeConfigurations);
dependentObjectArrayOrder = GraphUtil.GetTopDownOrder(typesReferences);
}
catch (GraphCircularDependencyException e)
{
throw new ConfigurationException(
"Error configuring engine, dependency graph between object array type names is circular: " + e.Message, e);
}
var nestableObjectArrayNames = configSnapshot.EventTypesNestableObjectArrayEvents;
dependentObjectArrayOrder.AddAll(nestableObjectArrayNames.Keys);
try
{
foreach (string objectArrayName in dependentObjectArrayOrder)
{
var objectArrayConfig = configSnapshot.ObjectArrayTypeConfigurations.Get(objectArrayName);
var propertyTypes = nestableObjectArrayNames.Get(objectArrayName);
propertyTypes = ResolveClassesForStringPropertyTypes(propertyTypes);
var propertyTypesCompiled = EventTypeUtility.CompileMapTypeProperties(propertyTypes, eventAdapterService);
eventAdapterService.AddNestableObjectArrayType(objectArrayName, propertyTypesCompiled, objectArrayConfig, true, true, true, false, false, false, null);
}
}
catch (EventAdapterException ex)
{
throw new ConfigurationException("Error configuring engine: " + ex.Message, ex);
}
// Add plug-in event representations
var plugInReps = configSnapshot.PlugInEventRepresentation;
foreach (var entry in plugInReps)
{
String className = entry.Value.EventRepresentationTypeName;
Type eventRepClass;
try
{
eventRepClass = TypeHelper.ResolveType(className);
}
catch (TypeLoadException ex)
{
throw new ConfigurationException("Failed to load plug-in event representation class '" + className + "'", ex);
}
Object pluginEventRepObj;
try
{
pluginEventRepObj = Activator.CreateInstance(eventRepClass);
}
catch (TypeInstantiationException ex)
{
throw new ConfigurationException("Failed to instantiate plug-in event representation class '" + className + "' via default constructor", ex);
}
catch (TargetInvocationException ex)
{
throw new ConfigurationException("Failed to instantiate plug-in event representation class '" + className + "' via default constructor", ex);
}
catch (MethodAccessException ex)
{
throw new ConfigurationException("Illegal access to instantiate plug-in event representation class '" + className + "' via default constructor", ex);
}
catch (MemberAccessException ex)
{
throw new ConfigurationException("Illegal access to instantiate plug-in event representation class '" + className + "' via default constructor", ex);
}
if (!(pluginEventRepObj is PlugInEventRepresentation))
{
throw new ConfigurationException("Plug-in event representation class '" + className + "' does not implement the required interface " + typeof(PlugInEventRepresentation).FullName);
}
var eventRepURI = entry.Key;
var pluginEventRep = (PlugInEventRepresentation)pluginEventRepObj;
var initializer = entry.Value.Initializer;
var context = new PlugInEventRepresentationContext(eventAdapterService, eventRepURI, initializer);
try
{
pluginEventRep.Init(context);
eventAdapterService.AddEventRepresentation(eventRepURI, pluginEventRep);
}
catch (Exception e)
{
throw new ConfigurationException("Plug-in event representation class '" + className + "' and URI '" + eventRepURI + "' did not initialize correctly : " + e.Message, e);
}
}
// Add plug-in event type names
IDictionary <String, ConfigurationPlugInEventType> plugInNames = configSnapshot.PlugInEventTypes;
foreach (KeyValuePair <String, ConfigurationPlugInEventType> entry in plugInNames)
{
String name = entry.Key;
ConfigurationPlugInEventType config = entry.Value;
eventAdapterService.AddPlugInEventType(name, config.EventRepresentationResolutionURIs, config.Initializer);
}
}
/// <summary>
/// Creates a method-invocation polling view for use as a stream that calls a method, or pulls results from cache.
/// </summary>
/// <param name="streamNumber">the stream number</param>
/// <param name="methodStreamSpec">defines the class and method to call</param>
/// <param name="eventAdapterService">for creating event types and events</param>
/// <param name="epStatementAgentInstanceHandle">for time-based callbacks</param>
/// <param name="methodResolutionService">for resolving classes and imports</param>
/// <param name="engineImportService">for resolving configurations</param>
/// <param name="schedulingService">for scheduling callbacks in expiry-time based caches</param>
/// <param name="scheduleBucket">for schedules within the statement</param>
/// <param name="exprEvaluatorContext">expression evaluation context</param>
/// <returns>pollable view</returns>
/// <throws>ExprValidationException if the expressions cannot be validated or the method descriptorhas incorrect class and method names, or parameter number and types don't match
/// </throws>
public static HistoricalEventViewable CreatePollMethodView(
int streamNumber,
MethodStreamSpec methodStreamSpec,
EventAdapterService eventAdapterService,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
MethodResolutionService methodResolutionService,
EngineImportService engineImportService,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
ExprEvaluatorContext exprEvaluatorContext,
VariableService variableService,
String contextName)
{
VariableMetaData variableMetaData = variableService.GetVariableMetaData(methodStreamSpec.ClassName);
MethodPollingExecStrategyEnum strategy;
VariableReader variableReader;
String variableName;
// Try to resolve the method
MethodInfo methodReflection;
FastMethod methodFastClass;
Type declaringClass;
Object invocationTarget;
try
{
if (variableMetaData != null)
{
variableName = variableMetaData.VariableName;
if (variableMetaData.ContextPartitionName != null)
{
if (contextName == null || !contextName.Equals(variableMetaData.ContextPartitionName))
{
throw new ExprValidationException("Variable by name '" + variableMetaData.VariableName + "' has been declared for context '" + variableMetaData.ContextPartitionName + "' and can only be used within the same context");
}
strategy = MethodPollingExecStrategyEnum.TARGET_VAR_CONTEXT;
variableReader = null;
invocationTarget = null;
}
else
{
variableReader = variableService.GetReader(methodStreamSpec.ClassName, VariableServiceConstants.NOCONTEXT_AGENTINSTANCEID);
if (variableMetaData.IsConstant)
{
invocationTarget = variableReader.Value;
if (invocationTarget is EventBean)
{
invocationTarget = ((EventBean)invocationTarget).Underlying;
}
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
}
else
{
invocationTarget = null;
strategy = MethodPollingExecStrategyEnum.TARGET_VAR;
}
}
methodReflection = methodResolutionService.ResolveNonStaticMethod(variableMetaData.VariableType, methodStreamSpec.MethodName);
}
else
{
methodReflection = methodResolutionService.ResolveMethod(methodStreamSpec.ClassName, methodStreamSpec.MethodName);
invocationTarget = null;
variableReader = null;
variableName = null;
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
}
declaringClass = methodReflection.DeclaringType;
methodFastClass = FastClass.CreateMethod(methodReflection);
}
catch (ExprValidationException e)
{
throw;
}
catch (Exception e)
{
throw new ExprValidationException(e.Message, e);
}
// Determine object type returned by method
var beanClass = methodFastClass.ReturnType;
if ((beanClass == typeof(void)) || (beanClass.IsBuiltinDataType()))
{
throw new ExprValidationException("Invalid return type for static method '" + methodFastClass.Name + "' of class '" + methodStreamSpec.ClassName + "', expecting a class");
}
bool isCollection = false;
bool isIterator = false;
Type collectionClass = null;
Type iteratorClass = null;
if (methodFastClass.ReturnType.IsArray)
{
beanClass = methodFastClass.ReturnType.GetElementType();
}
else if (!methodFastClass.ReturnType.IsGenericStringDictionary())
{
isCollection = methodFastClass.ReturnType.IsGenericCollection();
if (isCollection)
{
collectionClass = beanClass.GetGenericType(0);
beanClass = collectionClass;
}
var beanEnumerable = methodFastClass.ReturnType.FindGenericInterface(typeof(IEnumerable <>));
if (beanEnumerable != null)
{
isIterator = true;
iteratorClass = beanEnumerable.GetGenericType(0);
beanClass = iteratorClass;
}
else
{
var beanEnumerator = methodFastClass.ReturnType.FindGenericInterface(typeof(IEnumerator <>));
if (beanEnumerator != null)
{
isIterator = true;
iteratorClass = beanEnumerator.GetGenericType(0);
beanClass = iteratorClass;
}
}
}
// If the method returns a Map, look up the map type
IDictionary <string, object> mapType = null;
String mapTypeName = null;
if ((methodFastClass.ReturnType.IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsArray && methodFastClass.ReturnType.GetElementType().IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsGenericCollection() && methodFastClass.ReturnType.GetGenericType(0).IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsGenericEnumerator() && methodFastClass.ReturnType.GetGenericType(0).IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsGenericEnumerable() && methodFastClass.ReturnType.GetGenericType(0).IsGenericStringDictionary()))
{
var metadata = GetCheckMetadata(methodStreamSpec.MethodName, methodStreamSpec.ClassName, methodResolutionService, 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
IDictionary <string, object> oaType = null;
String oaTypeName = null;
if ((methodFastClass.ReturnType == typeof(object[])) ||
(methodFastClass.ReturnType == typeof(object[][])) ||
(methodFastClass.ReturnType.IsGenericCollection() && methodFastClass.ReturnType.GetGenericType(0) == typeof(object[])) ||
(methodFastClass.ReturnType.IsGenericEnumerator() && methodFastClass.ReturnType.GetGenericType(0) == typeof(object[])) ||
(methodFastClass.ReturnType.IsGenericEnumerable() && methodFastClass.ReturnType.GetGenericType(0) == typeof(object[])))
{
var metadata = GetCheckMetadata(methodStreamSpec.MethodName, methodStreamSpec.ClassName, methodResolutionService, typeof(IDictionary <string, object>));
oaTypeName = metadata.TypeName;
oaType = (IDictionary <String, Object>)metadata.TypeMetadata;
}
// Determine event type from class and method name
EventType eventType;
if (mapType != null)
{
eventType = eventAdapterService.AddNestableMapType(mapTypeName, mapType, null, false, true, true, false, false);
}
else if (oaType != null)
{
eventType = eventAdapterService.AddNestableObjectArrayType(oaTypeName, oaType, null, false, true, true, false, false, false, null);
}
else
{
eventType = eventAdapterService.AddBeanType(beanClass.FullName, beanClass, false, true, true);
}
// Construct polling strategy as a method invocation
var configCache = engineImportService.GetConfigurationMethodRef(declaringClass.FullName);
if (configCache == null)
{
configCache = engineImportService.GetConfigurationMethodRef(declaringClass.FullName);
}
var dataCacheDesc = configCache != null ? configCache.DataCacheDesc : null;
var dataCache = DataCacheFactory.GetDataCache(dataCacheDesc, epStatementAgentInstanceHandle, schedulingService, scheduleBucket);
PollExecStrategy methodPollStrategy;
if (mapType != null)
{
if (methodFastClass.ReturnType.IsArray)
{
methodPollStrategy = new MethodPollingExecStrategyMapArray(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isCollection)
{
methodPollStrategy = new MethodPollingExecStrategyMapCollection(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isIterator)
{
methodPollStrategy = new MethodPollingExecStrategyMapIterator(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else
{
methodPollStrategy = new MethodPollingExecStrategyMapPlain(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
}
else if (oaType != null)
{
if (methodFastClass.ReturnType == typeof(object[][]))
{
methodPollStrategy = new MethodPollingExecStrategyOAArray(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isCollection)
{
methodPollStrategy = new MethodPollingExecStrategyOACollection(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isIterator)
{
methodPollStrategy = new MethodPollingExecStrategyOAIterator(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else
{
methodPollStrategy = new MethodPollingExecStrategyOAPlain(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
}
else
{
if (methodFastClass.ReturnType.IsArray)
{
methodPollStrategy = new MethodPollingExecStrategyPOCOArray(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isCollection)
{
methodPollStrategy = new MethodPollingExecStrategyPOCOCollection(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isIterator)
{
methodPollStrategy = new MethodPollingExecStrategyPOCOIterator(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else
{
methodPollStrategy = new MethodPollingExecStrategyPOCOPlain(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
}
return(new MethodPollingViewable(variableMetaData == null, methodReflection.DeclaringType, methodStreamSpec, streamNumber, methodStreamSpec.Expressions, methodPollStrategy, dataCache, eventType, exprEvaluatorContext));
}
/// <summary>
/// Creates a method-invocation polling view for use as a stream that calls a method, or pulls results from cache.
/// </summary>
/// <param name="streamNumber">the stream number</param>
/// <param name="methodStreamSpec">defines the class and method to call</param>
/// <param name="eventAdapterService">for creating event types and events</param>
/// <param name="epStatementAgentInstanceHandle">for time-based callbacks</param>
/// <param name="engineImportService">for resolving configurations</param>
/// <param name="schedulingService">for scheduling callbacks in expiry-time based caches</param>
/// <param name="scheduleBucket">for schedules within the statement</param>
/// <param name="exprEvaluatorContext">expression evaluation context</param>
/// <param name="variableService">variable service</param>
/// <param name="statementContext">statement context</param>
/// <param name="contextName">context name</param>
/// <param name="dataCacheFactory">factory for cache</param>
/// <exception cref="ExprValidationException">
/// if the expressions cannot be validated or the method descriptor
/// has incorrect class and method names, or parameter number and types don't match
/// </exception>
/// <returns>pollable view</returns>
public static HistoricalEventViewable CreatePollMethodView(
int streamNumber,
MethodStreamSpec methodStreamSpec,
EventAdapterService eventAdapterService,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
EngineImportService engineImportService,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
ExprEvaluatorContext exprEvaluatorContext,
VariableService variableService,
string contextName,
DataCacheFactory dataCacheFactory,
StatementContext statementContext)
{
VariableMetaData variableMetaData = variableService.GetVariableMetaData(methodStreamSpec.ClassName);
MethodPollingExecStrategyEnum strategy;
VariableReader variableReader = null;
string variableName = null;
MethodInfo methodReflection = null;
object invocationTarget = null;
string eventTypeNameProvidedUDFOrScript = null;
// see if this is a script in the from-clause
ExprNodeScript scriptExpression = null;
if (methodStreamSpec.ClassName == null && methodStreamSpec.MethodName != null)
{
var scriptsByName = statementContext.ExprDeclaredService.GetScriptsByName(methodStreamSpec.MethodName);
if (scriptsByName != null)
{
scriptExpression =
ExprDeclaredHelper.GetExistsScript(
statementContext.ConfigSnapshot.EngineDefaults.Scripts.DefaultDialect,
methodStreamSpec.MethodName, methodStreamSpec.Expressions, scriptsByName,
statementContext.ExprDeclaredService);
}
}
try
{
if (scriptExpression != null)
{
eventTypeNameProvidedUDFOrScript = scriptExpression.EventTypeNameAnnotation;
strategy = MethodPollingExecStrategyEnum.TARGET_SCRIPT;
ExprNodeUtility.ValidateSimpleGetSubtree(
ExprNodeOrigin.METHODINVJOIN, scriptExpression, statementContext, null, false);
}
else if (variableMetaData != null)
{
variableName = variableMetaData.VariableName;
if (variableMetaData.ContextPartitionName != null)
{
if (contextName == null || !contextName.Equals(variableMetaData.ContextPartitionName))
{
throw new ExprValidationException(
"Variable by name '" + variableMetaData.VariableName +
"' has been declared for context '" + variableMetaData.ContextPartitionName +
"' and can only be used within the same context");
}
strategy = MethodPollingExecStrategyEnum.TARGET_VAR_CONTEXT;
variableReader = null;
invocationTarget = null;
}
else
{
variableReader = variableService.GetReader(
methodStreamSpec.ClassName, EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID);
if (variableMetaData.IsConstant)
{
invocationTarget = variableReader.Value;
if (invocationTarget is EventBean)
{
invocationTarget = ((EventBean)invocationTarget).Underlying;
}
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
}
else
{
invocationTarget = null;
strategy = MethodPollingExecStrategyEnum.TARGET_VAR;
}
}
methodReflection = engineImportService.ResolveNonStaticMethodOverloadChecked(
variableMetaData.VariableType, methodStreamSpec.MethodName);
}
else if (methodStreamSpec.ClassName == null)
{
// must be either UDF or script
Pair <Type, EngineImportSingleRowDesc> udf = null;
try
{
udf = engineImportService.ResolveSingleRow(methodStreamSpec.MethodName);
}
catch (EngineImportException ex)
{
throw new ExprValidationException(
"Failed to find user-defined function '" + methodStreamSpec.MethodName + "': " + ex.Message,
ex);
}
methodReflection = engineImportService.ResolveMethodOverloadChecked(udf.First, methodStreamSpec.MethodName);
invocationTarget = null;
variableReader = null;
variableName = null;
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
eventTypeNameProvidedUDFOrScript = udf.Second.OptionalEventTypeName;
}
else
{
methodReflection = engineImportService.ResolveMethodOverloadChecked(methodStreamSpec.ClassName, methodStreamSpec.MethodName);
invocationTarget = null;
variableReader = null;
variableName = null;
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;
bool isCollection = false;
bool isIterator = false;
EventType eventType;
EventType eventTypeWhenMethodReturnsEventBeans = null;
bool 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.IsBuiltinDataType()))
{
throw new ExprValidationException(
"Invalid return type for static method '" + methodReflection.Name + "' of class '" +
methodStreamSpec.ClassName + "', expecting a class");
}
if (methodReflection.ReturnType.IsArray &&
methodReflection.ReturnType.GetElementType() != typeof(EventBean))
{
beanClass = methodReflection.ReturnType.GetElementType();
}
Type collectionClass = null;
Type iteratorClass = null;
if (!beanClass.IsGenericDictionary())
{
isCollection = beanClass.IsGenericCollection();
if (isCollection)
{
collectionClass = TypeHelper.GetGenericReturnType(methodReflection, true);
beanClass = collectionClass;
}
isIterator = beanClass.IsGenericEnumerator() && !beanClass.IsGenericDictionary();
if (isIterator)
{
iteratorClass = TypeHelper.GetGenericReturnType(methodReflection, true);
beanClass = iteratorClass;
}
}
// If the method returns a Map, look up the map type
string mapTypeName = null;
if ((methodReflection.ReturnType.IsGenericStringDictionary()) ||
(methodReflection.ReturnType.IsArray && methodReflection.ReturnType.GetElementType().IsGenericStringDictionary()) ||
(isCollection && collectionClass.IsImplementsInterface(typeof(Map))) ||
(isIterator && iteratorClass.IsImplementsInterface(typeof(Map))))
{
MethodMetadataDesc metadata;
if (variableMetaData != null)
{
metadata = GetCheckMetadataVariable(
methodStreamSpec.MethodName, variableMetaData, variableReader, engineImportService,
typeof(Map));
}
else
{
metadata = GetCheckMetadataNonVariable(
methodStreamSpec.MethodName, methodStreamSpec.ClassName, engineImportService, typeof(Map));
}
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[])) ||
(isIterator && iteratorClass == typeof(object[])))
{
MethodMetadataDesc metadata;
if (variableMetaData != null)
{
metadata = GetCheckMetadataVariable(
methodStreamSpec.MethodName, variableMetaData, variableReader, engineImportService,
typeof(IDictionary <string, object>));
}
else
{
metadata = GetCheckMetadataNonVariable(
methodStreamSpec.MethodName, methodStreamSpec.ClassName, engineImportService,
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
if ((methodReflection.ReturnType.IsArray &&
methodReflection.ReturnType.GetElementType() == typeof(EventBean)) ||
(isCollection && collectionClass == typeof(EventBean)) ||
(isIterator && iteratorClass == typeof(EventBean)))
{
string typeName = methodStreamSpec.EventTypeName == null
? eventTypeNameProvidedUDFOrScript
: methodStreamSpec.EventTypeName;
eventType = EventTypeUtility.RequireEventType(
"Method", methodReflection.Name, eventAdapterService, typeName);
eventTypeWhenMethodReturnsEventBeans = eventType;
}
else if (mapType != null)
{
eventType = eventAdapterService.AddNestableMapType(
mapTypeName, mapType, null, false, true, true, false, false);
}
else if (oaType != null)
{
eventType = eventAdapterService.AddNestableObjectArrayType(
oaTypeName, oaType, null, false, true, true, false, false, false, null);
}
else
{
eventType = eventAdapterService.AddBeanType(beanClass.GetDefaultTypeName(), beanClass, false, true, true);
}
// the @type is only allowed in conjunction with EventBean return types
if (methodStreamSpec.EventTypeName != null && eventTypeWhenMethodReturnsEventBeans == null)
{
throw new ExprValidationException(EventTypeUtility.DisallowedAtTypeMessage());
}
}
else
{
string eventTypeName = methodStreamSpec.EventTypeName == null
? scriptExpression.EventTypeNameAnnotation
: methodStreamSpec.EventTypeName;
eventType = EventTypeUtility.RequireEventType(
"Script", scriptExpression.Script.Name, eventAdapterService, eventTypeName);
}
// get configuration for cache
string configName = methodProviderClass != null ? methodProviderClass.FullName : methodStreamSpec.MethodName;
ConfigurationMethodRef configCache = engineImportService.GetConfigurationMethodRef(configName);
if (configCache == null)
{
configCache = engineImportService.GetConfigurationMethodRef(configName);
}
ConfigurationDataCache dataCacheDesc = (configCache != null) ? configCache.DataCacheDesc : null;
DataCache dataCache = dataCacheFactory.GetDataCache(
dataCacheDesc, statementContext, epStatementAgentInstanceHandle, schedulingService, scheduleBucket,
streamNumber);
// metadata
var meta = new MethodPollingViewableMeta(
methodProviderClass, isStaticMethod, mapType, oaType, invocationTarget, strategy, isCollection,
isIterator, variableReader, variableName, eventTypeWhenMethodReturnsEventBeans, scriptExpression);
return(new MethodPollingViewable(methodStreamSpec, dataCache, eventType, exprEvaluatorContext, meta, statementContext.ThreadLocalManager));
}
