public override ExprNode Validate(ExprValidationContext validationContext)
{
if (Script.ParameterNames.Length != Parameters.Count) {
throw new ExprValidationException(
string.Format(
"Invalid number of parameters for script '{0}', expected {1} parameters but received {2} parameters",
Script.Name,
Script.ParameterNames.Length,
Parameters.Count));
}
if (!validationContext.StatementCompileTimeService.Configuration.Compiler.Scripts.IsEnabled) {
throw new ExprValidationException("Script compilation has been disabled by configuration");
}
// validate all expression parameters
var validatedParameters = Parameters
.Select(
expr => ExprNodeUtilityValidate.GetValidatedSubtree(
ExprNodeOrigin.SCRIPTPARAMS,
expr,
validationContext))
.ToList();
// set up map of input parameter names and evaluators
var forges = new ExprForge[Script.ParameterNames.Length];
for (var i = 0; i < Script.ParameterNames.Length; i++) {
forges[i] = validatedParameters[i].Forge;
}
Parameters = validatedParameters;
// Compile script
var parameterTypes = ExprNodeUtilityQuery.GetExprResultTypes(forges);
var dialect = Script.OptionalDialect ?? _defaultDialect;
var compiled = CompileScript(
dialect,
Script.Name,
Script.Expression,
Script.ParameterNames,
parameterTypes,
Script.CompiledBuf,
validationContext.ImportService,
validationContext.ScriptCompiler);
// Determine declared return type
var declaredReturnType = GetDeclaredReturnType(Script.OptionalReturnTypeName, validationContext);
if (Script.IsOptionalReturnTypeIsArray && declaredReturnType != null) {
declaredReturnType = TypeHelper.GetArrayType(declaredReturnType);
}
Type returnType;
if (compiled.KnownReturnType == null && Script.OptionalReturnTypeName == null) {
returnType = typeof(object);
}
else if (compiled.KnownReturnType != null) {
if (declaredReturnType == null) {
returnType = compiled.KnownReturnType;
}
else {
var knownReturnType = compiled.KnownReturnType;
if (declaredReturnType.IsArray && knownReturnType.IsArray) {
// we are fine
}
else if (!knownReturnType.IsAssignmentCompatible(declaredReturnType)) {
throw new ExprValidationException(
"Return type and declared type not compatible for script '" +
Script.Name +
"', known return type is " +
knownReturnType.Name +
" versus declared return type " +
declaredReturnType.Name);
}
returnType = declaredReturnType;
}
}
else {
returnType = declaredReturnType;
}
if (returnType == null) {
returnType = typeof(object);
}
_eventTypeCollection = null;
if (Script.OptionalEventTypeName != null) {
if (returnType.IsArray && returnType.GetElementType() == typeof(EventBean)) {
_eventTypeCollection = EventTypeUtility.RequireEventType(
"Script",
Script.Name,
Script.OptionalEventTypeName,
validationContext.StatementCompileTimeService.EventTypeCompileTimeResolver);
}
else {
throw new ExprValidationException(EventTypeUtility.DisallowedAtTypeMessage());
}
}
_scriptDescriptor = new ScriptDescriptorCompileTime(
Script.OptionalDialect,
Script.Name,
Script.Expression,
Script.ParameterNames,
Parameters.ToArray(),
returnType,
_defaultDialect);
return null;
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
if (_evaluator != null)
{
return(null);
}
if (Script.ParameterNames.Count != Parameters.Count)
{
throw new ExprValidationException(
string.Format(
"Invalid number of parameters for script '{0}', expected {1} parameters but received {2} parameters",
Script.Name,
Script.ParameterNames.Count,
Parameters.Count));
}
// validate all expression parameters
var validatedParameters = Parameters
.Select(
expr => ExprNodeUtility.GetValidatedSubtree(ExprNodeOrigin.SCRIPTPARAMS, expr, validationContext))
.ToList();
// set up map of input parameter names and evaluators
var inputParamNames = new string[Script.ParameterNames.Count];
var evaluators = new ExprEvaluator[Script.ParameterNames.Count];
for (int i = 0; i < Script.ParameterNames.Count; i++)
{
inputParamNames[i] = Script.ParameterNames[i];
evaluators[i] = validatedParameters[i].ExprEvaluator;
}
// Compile script
if (Script.Compiled == null)
{
CompileScript(validationContext.ScriptingService, evaluators, validationContext.EngineImportService);
}
// Determine declared return type
Type declaredReturnType = GetDeclaredReturnType(Script.OptionalReturnTypeName, validationContext);
if (Script.IsOptionalReturnTypeIsArray && declaredReturnType != null)
{
declaredReturnType = TypeHelper.GetArrayType(declaredReturnType);
}
Type returnType;
if (Script.Compiled.KnownReturnType == null && Script.OptionalReturnTypeName == null)
{
returnType = typeof(Object);
}
else if (Script.Compiled.KnownReturnType != null)
{
if (declaredReturnType == null)
{
returnType = Script.Compiled.KnownReturnType;
}
else
{
Type knownReturnType = Script.Compiled.KnownReturnType;
if (declaredReturnType.IsArray && knownReturnType.IsArray)
{
// we are fine
}
else if (!knownReturnType.IsAssignmentCompatible(declaredReturnType))
{
throw new ExprValidationException(
"Return type and declared type not compatible for script '" + Script.Name +
"', known return type is " + knownReturnType.Name + " versus declared return type " +
declaredReturnType.Name);
}
returnType = declaredReturnType;
}
}
else
{
returnType = declaredReturnType;
}
if (returnType == null)
{
returnType = typeof(Object);
}
EventType eventTypeCollection = null;
if (Script.OptionalEventTypeName != null)
{
if (returnType.IsArray && returnType.GetElementType() == typeof(EventBean))
{
eventTypeCollection = EventTypeUtility.RequireEventType(
"Script", Script.Name, validationContext.EventAdapterService, Script.OptionalEventTypeName);
}
else
{
throw new ExprValidationException(EventTypeUtility.DisallowedAtTypeMessage());
}
}
// Prepare evaluator - this sets the evaluator
PrepareEvaluator(
validationContext.StatementName, inputParamNames, evaluators, returnType, eventTypeCollection);
return(null);
}
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);
}
/// <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));
}