/// <summary>
/// Creates a cache implementation for the strategy as defined by the cache descriptor.
/// </summary>
/// <param name="cacheDesc">cache descriptor</param>
/// <param name="epStatementAgentInstanceHandle">statement handle for timer invocations</param>
/// <param name="schedulingService">scheduling service for time-based caches</param>
/// <param name="scheduleBucket">for ordered timer invokation</param>
/// <returns>data cache implementation</returns>
public DataCache GetDataCache(
ConfigurationDataCache cacheDesc,
StatementContext statementContext,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
int streamNum)
{
if (cacheDesc == null)
{
return(new DataCacheNullImpl());
}
if (cacheDesc is ConfigurationLRUCache)
{
var lruCache = (ConfigurationLRUCache)cacheDesc;
return(new DataCacheLRUImpl(lruCache.Size));
}
if (cacheDesc is ConfigurationExpiryTimeCache)
{
var expCache = (ConfigurationExpiryTimeCache)cacheDesc;
return(MakeTimeCache(expCache, statementContext, epStatementAgentInstanceHandle, schedulingService, scheduleBucket, streamNum));
}
throw new IllegalStateException("Cache implementation class not configured");
}
// settable for view-sharing
/// <summary>
/// Constructor.
/// </summary>
/// <param name="stmtEngineServices">is the engine services for the statement</param>
/// <param name="schedulingService">implementation for schedule registration</param>
/// <param name="scheduleBucket">is for ordering scheduled callbacks within the view statements</param>
/// <param name="epStatementHandle">is the statements-own handle for use in registering callbacks with services</param>
/// <param name="viewResultionService">is a service for resolving view namespace and name to a view factory</param>
/// <param name="patternResolutionService">is the service that resolves pattern objects for the statement</param>
/// <param name="statementExtensionSvcContext">provide extension points for custom statement resources</param>
/// <param name="statementStopService">for registering a callback invoked when a statement is stopped</param>
/// <param name="methodResolutionService">is a service for resolving static methods and aggregation functions</param>
/// <param name="patternContextFactory">is the pattern-level services and context information factory</param>
/// <param name="filterService">is the filtering service</param>
/// <param name="statementResultService">handles awareness of listeners/subscriptions for a statement customizing output produced</param>
/// <param name="internalEventEngineRouteDest">routing destination</param>
/// <param name="annotations">The annotations.</param>
/// <param name="statementAgentInstanceRegistry">The statement agent instance registry.</param>
/// <param name="defaultAgentInstanceLock">The default agent instance lock.</param>
/// <param name="contextDescriptor">The context descriptor.</param>
/// <param name="patternSubexpressionPoolSvc">The pattern subexpression pool SVC.</param>
/// <param name="matchRecognizeStatePoolStmtSvc">The match recognize state pool statement SVC.</param>
/// <param name="statelessSelect">if set to <c>true</c> [stateless select].</param>
/// <param name="contextControllerFactoryService">The context controller factory service.</param>
/// <param name="defaultAgentInstanceScriptContext">The default agent instance script context.</param>
/// <param name="aggregationServiceFactoryService">The aggregation service factory service.</param>
/// <param name="scriptingService">The scripting service.</param>
/// <param name="writesToTables">if set to <c>true</c> [writes to tables].</param>
/// <param name="statementUserObject">The statement user object.</param>
/// <param name="statementSemiAnonymousTypeRegistry">The statement semi anonymous type registry.</param>
/// <param name="priority">The priority.</param>
public StatementContext(
StatementContextEngineServices stmtEngineServices,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
EPStatementHandle epStatementHandle,
ViewResolutionService viewResultionService,
PatternObjectResolutionService patternResolutionService,
StatementExtensionSvcContext statementExtensionSvcContext,
StatementStopService statementStopService,
MethodResolutionService methodResolutionService,
PatternContextFactory patternContextFactory,
FilterService filterService,
StatementResultService statementResultService,
InternalEventRouteDest internalEventEngineRouteDest,
Attribute[] annotations,
StatementAIResourceRegistry statementAgentInstanceRegistry,
IReaderWriterLock defaultAgentInstanceLock,
ContextDescriptor contextDescriptor,
PatternSubexpressionPoolStmtSvc patternSubexpressionPoolSvc,
MatchRecognizeStatePoolStmtSvc matchRecognizeStatePoolStmtSvc,
bool statelessSelect,
ContextControllerFactoryService contextControllerFactoryService,
AgentInstanceScriptContext defaultAgentInstanceScriptContext,
AggregationServiceFactoryService aggregationServiceFactoryService,
ScriptingService scriptingService,
bool writesToTables,
object statementUserObject,
StatementSemiAnonymousTypeRegistry statementSemiAnonymousTypeRegistry,
int priority)
{
_stmtEngineServices = stmtEngineServices;
SchedulingService = schedulingService;
ScheduleBucket = scheduleBucket;
EpStatementHandle = epStatementHandle;
ViewResolutionService = viewResultionService;
PatternResolutionService = patternResolutionService;
StatementExtensionServicesContext = statementExtensionSvcContext;
StatementStopService = statementStopService;
MethodResolutionService = methodResolutionService;
PatternContextFactory = patternContextFactory;
FilterService = filterService;
_statementResultService = statementResultService;
InternalEventEngineRouteDest = internalEventEngineRouteDest;
ScheduleAdjustmentService = stmtEngineServices.ConfigSnapshot.EngineDefaults.ExecutionConfig.IsAllowIsolatedService ? new ScheduleAdjustmentService() : null;
Annotations = annotations;
StatementAgentInstanceRegistry = statementAgentInstanceRegistry;
DefaultAgentInstanceLock = defaultAgentInstanceLock;
ContextDescriptor = contextDescriptor;
PatternSubexpressionPoolSvc = patternSubexpressionPoolSvc;
MatchRecognizeStatePoolStmtSvc = matchRecognizeStatePoolStmtSvc;
IsStatelessSelect = statelessSelect;
ContextControllerFactoryService = contextControllerFactoryService;
DefaultAgentInstanceScriptContext = defaultAgentInstanceScriptContext;
AggregationServiceFactoryService = aggregationServiceFactoryService;
ScriptingService = scriptingService;
IsWritesToTables = writesToTables;
StatementUserObject = statementUserObject;
StatementSemiAnonymousTypeRegistry = statementSemiAnonymousTypeRegistry;
Priority = priority;
}
/// <summary> Ctor.</summary>
/// <param name="mapDatabaseRef">is a map of database name and database configuration entries
/// </param>
/// <param name="schedulingService">is for scheduling callbacks for a cache
/// </param>
/// <param name="scheduleBucket">is a system bucket for all scheduling callbacks for caches
/// </param>
public DatabaseConfigServiceImpl(IDictionary <String, ConfigurationDBRef> mapDatabaseRef, SchedulingService schedulingService, ScheduleBucket scheduleBucket)
{
_mapDatabaseRef = mapDatabaseRef;
_connectionFactories = new Dictionary <String, DatabaseConnectionFactory>();
_schedulingService = schedulingService;
_scheduleBucket = scheduleBucket;
}
public void SetUp()
{
service = new SchedulingServiceImpl(-1, new TimeSourceServiceImpl());
// 2-by-2 table of buckets and slots
var buckets = new ScheduleBucket[3];
slots = new long[buckets.Length][];
slots.Fill(() => new long[2]);
for (var i = 0; i < buckets.Length; i++)
{
buckets[i] = new ScheduleBucket(i);
slots[i] = new long[2];
for (var j = 0; j < slots[i].Length; j++)
{
slots[i][j] = buckets[i].AllocateSlot();
}
}
callbacks = new SupportScheduleCallback[5];
for (var i = 0; i < callbacks.Length; i++)
{
callbacks[i] = new SupportScheduleCallback();
}
}
/// <summary>Creates a cache implementation for the strategy as defined by the cache descriptor. </summary>
/// <param name="cacheDesc">cache descriptor</param>
/// <param name="epStatementAgentInstanceHandle">statement handle for timer invocations</param>
/// <param name="schedulingService">scheduling service for time-based caches</param>
/// <param name="scheduleBucket">for ordered timer invokation</param>
/// <returns>data cache implementation</returns>
public static DataCache GetDataCache(ConfigurationDataCache cacheDesc,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket)
{
if (cacheDesc == null)
{
return(new DataCacheNullImpl());
}
if (cacheDesc is ConfigurationLRUCache)
{
ConfigurationLRUCache lruCache = (ConfigurationLRUCache)cacheDesc;
return(new DataCacheLRUImpl(lruCache.Size));
}
if (cacheDesc is ConfigurationExpiryTimeCache)
{
ConfigurationExpiryTimeCache expCache = (ConfigurationExpiryTimeCache)cacheDesc;
return(new DataCacheExpiringImpl(expCache.MaxAgeSeconds, expCache.PurgeIntervalSeconds, expCache.CacheReferenceType,
schedulingService, scheduleBucket.AllocateSlot(), epStatementAgentInstanceHandle));
}
throw new IllegalStateException("Cache implementation class not configured");
}
protected internal DataCache MakeTimeCache(
ConfigurationExpiryTimeCache expCache,
StatementContext statementContext,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
int streamNum)
{
return(new DataCacheExpiringImpl(
expCache.MaxAgeSeconds, expCache.PurgeIntervalSeconds, expCache.CacheReferenceType,
schedulingService, scheduleBucket.AllocateSlot(), epStatementAgentInstanceHandle));
}
public StatementContext(
IContainer container,
ContextRuntimeDescriptor contextRuntimeDescriptor,
string deploymentId,
int statementId,
string statementName,
string moduleName,
StatementInformationalsRuntime statementInformationals,
object userObjectRuntime,
StatementContextRuntimeServices statementContextRuntimeServices,
EPStatementHandle epStatementHandle,
IDictionary<int, FilterSpecActivatable> filterSpecActivatables,
PatternSubexpressionPoolStmtSvc patternSubexpressionPoolSvc,
RowRecogStatePoolStmtSvc rowRecogStatePoolStmtSvc,
ScheduleBucket scheduleBucket,
StatementAIResourceRegistry statementAIResourceRegistry,
StatementCPCacheService statementCPCacheService,
StatementAIFactoryProvider statementAIFactoryProvider,
StatementResultService statementResultService,
UpdateDispatchView updateDispatchView,
FilterService filterService,
SchedulingService schedulingService,
InternalEventRouteDest internalEventRouteDest)
{
Container = container;
ContextRuntimeDescriptor = contextRuntimeDescriptor;
DeploymentId = deploymentId;
StatementId = statementId;
StatementName = statementName;
ModuleName = moduleName;
StatementInformationals = statementInformationals;
UserObjectRuntime = userObjectRuntime;
StatementContextRuntimeServices = statementContextRuntimeServices;
EpStatementHandle = epStatementHandle;
FilterSpecActivatables = filterSpecActivatables;
PatternSubexpressionPoolSvc = patternSubexpressionPoolSvc;
RowRecogStatePoolStmtSvc = rowRecogStatePoolStmtSvc;
ScheduleBucket = scheduleBucket;
StatementAIResourceRegistry = statementAIResourceRegistry;
StatementCPCacheService = statementCPCacheService;
StatementAIFactoryProvider = statementAIFactoryProvider;
StatementResultService = statementResultService;
UpdateDispatchView = updateDispatchView;
StatementContextFilterEvalEnv = new StatementContextFilterEvalEnv(
statementContextRuntimeServices.ImportServiceRuntime,
statementInformationals.Annotations,
statementContextRuntimeServices.VariableManagementService,
statementContextRuntimeServices.TableExprEvaluatorContext);
this.FilterService = filterService;
this.SchedulingService = schedulingService;
this.InternalEventRouteDest = internalEventRouteDest;
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="runtime">the EPRuntime for services and runtime</param>
/// <param name="usingEngineThread">true if the coordinator should set time by the scheduling service in the engine, false if it should set time externally through the calling thread</param>
/// <param name="usingExternalTimer">true to use esper's external timer mechanism instead of internal timing</param>
/// <param name="usingTimeSpanEvents"></param>
/// <exception cref="System.ArgumentNullException">epService;epService cannot be null</exception>
/// <exception cref="System.ArgumentException">Illegal type of EPServiceProvider</exception>
public AdapterCoordinatorImpl(EPRuntime runtime, bool usingEngineThread, bool usingExternalTimer, bool usingTimeSpanEvents)
: base(runtime, usingEngineThread, usingExternalTimer, usingTimeSpanEvents)
{
if (runtime == null)
{
throw new ArgumentNullException("runtime", "runtime cannot be null");
}
if (!(runtime is EPRuntimeSPI))
{
throw new ArgumentException("Illegal type of EPServiceProvider");
}
this._runtime = runtime;
this._scheduleBucket = new ScheduleBucket(-1);
this._usingEngineThread = usingEngineThread;
this._usingExternalTimer = usingExternalTimer;
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="epService">the EPServiceProvider for the engine services and runtime</param>
/// <param name="usingEngineThread">true if the coordinator should set time by the scheduling service in the engine, false if it should set time externally through the calling thread</param>
/// <param name="usingExternalTimer">true to use esper's external timer mechanism instead of internal timing</param>
/// <param name="usingTimeSpanEvents"></param>
/// <exception cref="System.ArgumentNullException">epService;epService cannot be null</exception>
/// <exception cref="System.ArgumentException">Illegal type of EPServiceProvider</exception>
public AdapterCoordinatorImpl(EPServiceProvider epService, bool usingEngineThread, bool usingExternalTimer, bool usingTimeSpanEvents)
: base(epService, usingEngineThread, usingExternalTimer, usingTimeSpanEvents)
{
if (epService == null)
{
throw new ArgumentNullException("epService", "epService cannot be null");
}
if (!(epService is EPServiceProviderSPI))
{
throw new ArgumentException("Illegal type of EPServiceProvider");
}
this._epService = epService;
this._scheduleBucket = ((EPServiceProviderSPI)epService).SchedulingMgmtService.AllocateBucket();
this._usingEngineThread = usingEngineThread;
this._usingExternalTimer = usingExternalTimer;
}
/// <summary>Creates the database config service. </summary>
/// <param name="configSnapshot">is the config snapshot</param>
/// <param name="schedulingService">is the timer stuff</param>
/// <param name="schedulingMgmtService">for statement schedule management</param>
/// <returns>database config svc</returns>
internal static DatabaseConfigService MakeDatabaseRefService(ConfigurationInformation configSnapshot,
SchedulingService schedulingService,
SchedulingMgmtService schedulingMgmtService)
{
DatabaseConfigService databaseConfigService;
// Add auto-imports
try
{
ScheduleBucket allStatementsBucket = schedulingMgmtService.AllocateBucket();
databaseConfigService = new DatabaseConfigServiceImpl(configSnapshot.DatabaseReferences, schedulingService, allStatementsBucket);
}
catch (ArgumentException ex)
{
throw new ConfigurationException("Error configuring engine: " + ex.Message, ex);
}
return(databaseConfigService);
}
private void FinishInitialization(EPRuntime runtime, CSVInputAdapterSpec spec)
{
AssertValidParameters(runtime, spec);
var spi = (EPRuntimeSPI)runtime;
ScheduleSlot = new ScheduleBucket(-1).AllocateSlot();
_reader = new CSVReader(spec.AdapterInputSource);
_reader.Looping = spec.IsLooping;
var firstRow = FirstRow;
var givenPropertyTypes = ConstructPropertyTypes(
spec.EventTypeName,
spec.PropertyTypes,
spi.ServicesContext.EventTypeRepositoryBus);
_propertyOrder =
spec.PropertyOrder ??
CSVPropertyOrderHelper.ResolvePropertyOrder(firstRow, givenPropertyTypes);
_reader.IsUsingTitleRow = IsUsingTitleRow(firstRow, _propertyOrder);
if (!IsUsingTitleRow(firstRow, _propertyOrder))
{
this._firstRow = firstRow;
}
_propertyTypes = ResolvePropertyTypes(givenPropertyTypes);
if (givenPropertyTypes == null)
{
throw new EPException("CSV adapter requires a predefined event type name, the event type named '" + spec.EventTypeName + "' could not be found");
}
Coercer.SetPropertyTypes(_propertyTypes);
}
/// <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));
}
