public static bool IsDatetimeOrEnumMethod(
string name,
ImportServiceCompileTime importService)
{
return(EnumMethodResolver.IsEnumerationMethod(name, importService) ||
DatetimeMethodResolver.IsDateTimeMethod(name, importService));
}
public static ExprNodeUtilMethodDesc ResolveMethodAllowWildcardAndStream(
string className,
Type optionalClass,
string methodName,
IList<ExprNode> parameters,
bool allowWildcard,
EventType wildcardType,
ExprNodeUtilResolveExceptionHandler exceptionHandler,
string functionName,
StatementRawInfo statementRawInfo,
StatementCompileTimeServices services)
{
var paramTypes = new Type[parameters.Count];
var childForges = new ExprForge[parameters.Count];
var count = 0;
var allowEventBeanType = new bool[parameters.Count];
var allowEventBeanCollType = new bool[parameters.Count];
var childEvalsEventBeanReturnTypesForges = new ExprForge[parameters.Count];
var allConstants = true;
foreach (var childNode in parameters) {
if (!EnumMethodResolver.IsEnumerationMethod(methodName, services.ImportServiceCompileTime) && childNode is ExprLambdaGoesNode) {
throw new ExprValidationException(
"Unrecognized lambda-expression encountered as parameter to UDF or static method '" +
methodName +
"'");
}
if (childNode is ExprWildcard) {
if (wildcardType == null || !allowWildcard) {
throw new ExprValidationException("Failed to resolve wildcard parameter to a given event type");
}
childForges[count] = new ExprEvalStreamNumUnd(0, wildcardType.UnderlyingType);
childEvalsEventBeanReturnTypesForges[count] = new ExprEvalStreamNumEvent(0);
paramTypes[count] = wildcardType.UnderlyingType;
allowEventBeanType[count] = true;
allConstants = false;
count++;
continue;
}
if (childNode is ExprStreamUnderlyingNode) {
var und = (ExprStreamUnderlyingNode) childNode;
var tableMetadata = services.TableCompileTimeResolver.ResolveTableFromEventType(und.EventType);
if (tableMetadata == null) {
childForges[count] = childNode.Forge;
childEvalsEventBeanReturnTypesForges[count] = new ExprEvalStreamNumEvent(und.StreamId);
}
else {
childForges[count] = new ExprEvalStreamTable(
und.StreamId,
und.EventType.UnderlyingType,
tableMetadata);
childEvalsEventBeanReturnTypesForges[count] =
new ExprEvalStreamNumEventTable(und.StreamId, tableMetadata);
}
paramTypes[count] = childForges[count].EvaluationType;
allowEventBeanType[count] = true;
allConstants = false;
count++;
continue;
}
if (childNode.Forge is ExprEnumerationForge) {
var enumeration = (ExprEnumerationForge) childNode.Forge;
var eventType = enumeration.GetEventTypeSingle(statementRawInfo, services);
childForges[count] = childNode.Forge;
paramTypes[count] = childForges[count].EvaluationType;
allConstants = false;
if (eventType != null) {
childEvalsEventBeanReturnTypesForges[count] = new ExprEvalStreamNumEnumSingleForge(enumeration);
allowEventBeanType[count] = true;
count++;
continue;
}
var eventTypeColl = enumeration.GetEventTypeCollection(statementRawInfo, services);
if (eventTypeColl != null) {
childEvalsEventBeanReturnTypesForges[count] = new ExprEvalStreamNumEnumCollForge(enumeration);
allowEventBeanCollType[count] = true;
count++;
continue;
}
}
paramTypes[count] = childNode.Forge.EvaluationType;
childForges[count] = childNode.Forge;
count++;
if (!childNode.Forge.ForgeConstantType.IsCompileTimeConstant) {
allConstants = false;
}
}
// Try to resolve the method
MethodInfo method;
try {
if (optionalClass != null) {
method = services.ImportServiceCompileTime.ResolveMethod(
optionalClass,
methodName,
paramTypes,
allowEventBeanType);
}
else {
method = services.ImportServiceCompileTime.ResolveMethodOverloadChecked(
className,
methodName,
paramTypes,
allowEventBeanType,
allowEventBeanCollType,
services.ClassProvidedExtension);
}
}
catch (Exception e) {
throw exceptionHandler.Handle(e);
}
var parameterTypes = method.GetParameterTypes();
// rewrite those evaluator that should return the event itself
if (CollectionUtil.IsAnySet(allowEventBeanType)) {
for (var i = 0; i < parameters.Count; i++) {
if (allowEventBeanType[i] && parameterTypes[i] == typeof(EventBean)) {
childForges[i] = childEvalsEventBeanReturnTypesForges[i];
}
}
}
// rewrite those evaluators that should return the event collection
if (CollectionUtil.IsAnySet(allowEventBeanCollType)) {
for (var i = 0; i < parameters.Count; i++) {
if (allowEventBeanCollType[i] && (parameterTypes[i] == typeof(ICollection<EventBean>))) {
childForges[i] = childEvalsEventBeanReturnTypesForges[i];
}
}
}
// add an evaluator if the method expects a context object
if (!method.IsVarArgs() &&
parameterTypes.Length > 0 &&
parameterTypes[parameterTypes.Length - 1] == typeof(EPLMethodInvocationContext)) {
var node = new ExprEvalMethodContext(functionName);
childForges = (ExprForge[]) CollectionUtil.ArrayExpandAddSingle(childForges, node);
}
// handle varargs
if (method.IsVarArgs()) {
// handle context parameter
var numMethodParams = parameterTypes.Length;
if (numMethodParams > 1 && parameterTypes[numMethodParams - 2] == typeof(EPLMethodInvocationContext)) {
var rewrittenForges = new ExprForge[childForges.Length + 1];
Array.Copy(childForges, 0, rewrittenForges, 0, numMethodParams - 2);
rewrittenForges[numMethodParams - 2] = new ExprEvalMethodContext(functionName);
Array.Copy(
childForges,
numMethodParams - 2,
rewrittenForges,
numMethodParams - 1,
childForges.Length - (numMethodParams - 2));
childForges = rewrittenForges;
}
childForges = ExprNodeUtilityMake.MakeVarargArrayForges(method, childForges);
}
var localInlinedClass = services.ClassProvidedExtension.IsLocalInlinedClass(method.DeclaringType);
return new ExprNodeUtilMethodDesc(allConstants, childForges, method, localInlinedClass);
}
public static ExprDotNodeRealizedChain GetChainEvaluators(
int?streamOfProviderIfApplicable,
EPType inputType,
IList <Chainable> chainSpec,
ExprValidationContext validationContext,
bool isDuckTyping,
ExprDotNodeFilterAnalyzerInput inputDesc)
{
var methodForges = new List <ExprDotForge>();
var currentInputType = inputType;
EnumMethodDesc lastLambdaFunc = null;
var lastElement = chainSpec.IsEmpty() ? null : chainSpec[chainSpec.Count - 1];
FilterExprAnalyzerAffector filterAnalyzerDesc = null;
Deque <Chainable> chainSpecStack = new ArrayDeque <Chainable>(chainSpec);
while (!chainSpecStack.IsEmpty())
{
var chainElement = chainSpecStack.RemoveFirst();
var parameters = chainElement.GetParametersOrEmpty();
var chainElementName = chainElement.GetRootNameOrEmptyString();
var last = chainSpecStack.IsEmpty();
lastLambdaFunc = null; // reset
// compile parameters for chain element
var paramForges = new ExprForge[parameters.Count];
var paramTypes = new Type[parameters.Count];
for (var i = 0; i < parameters.Count; i++)
{
paramForges[i] = parameters[i].Forge;
paramTypes[i] = paramForges[i].EvaluationType;
}
// check if special 'size' method
if (currentInputType is ClassMultiValuedEPType)
{
var type = (ClassMultiValuedEPType)currentInputType;
if (string.Equals(chainElementName, "size", StringComparison.InvariantCultureIgnoreCase) &&
paramTypes.Length == 0 &&
lastElement == chainElement)
{
ExprDotForge size;
var containerType = ((ClassMultiValuedEPType)currentInputType).Container;
if (containerType.IsArray)
{
size = new ExprDotForgeSizeArray();
}
else
{
size = new ExprDotForgeSizeCollection();
}
methodForges.Add(size);
currentInputType = size.TypeInfo;
continue;
}
if (string.Equals(chainElementName, "get", StringComparison.InvariantCultureIgnoreCase) &&
paramTypes.Length == 1 &&
paramTypes[0].GetBoxedType() == typeof(int?))
{
ExprDotForge get;
var componentType = type.Component.GetBoxedType();
if (type.Container.IsArray)
{
get = new ExprDotForgeGetArray(paramForges[0], componentType);
}
else
{
get = new ExprDotForgeGetCollection(paramForges[0], componentType);
}
methodForges.Add(get);
currentInputType = get.TypeInfo;
continue;
}
if (chainElement is ChainableArray && type.Container.IsArray)
{
var array = (ChainableArray)chainElement;
var typeInfo = currentInputType;
var indexExpr = ChainableArray.ValidateSingleIndexExpr(
array.Indexes,
() => "operation on type " + typeInfo.ToTypeDescriptive());
var componentType = type.Component.GetBoxedType();
var get = new ExprDotForgeGetArray(indexExpr.Forge, componentType);
methodForges.Add(get);
currentInputType = get.TypeInfo;
continue;
}
}
// determine if there is a matching method or property
var methodTarget = GetMethodTarget(currentInputType);
var matchingMethod = false;
if (methodTarget != null && (!(chainElement is ChainableArray)))
{
try {
GetValidateMethodDescriptor(methodTarget, chainElementName, parameters, validationContext);
matchingMethod = true;
}
catch (ExprValidationException) {
// expected
}
}
if (EnumMethodResolver.IsEnumerationMethod(chainElementName, validationContext.ImportService) &&
(!matchingMethod || methodTarget.IsArray || methodTarget.IsGenericCollection()))
{
var enumerationMethod = EnumMethodResolver.FromName(chainElementName, validationContext.ImportService);
if (enumerationMethod == null)
{
throw new EPException("unable to determine enumeration method from name");
}
var eval = enumerationMethod.Factory.Invoke(chainElement.GetParametersOrEmpty().Count);
if (currentInputType is ClassEPType classEpType && classEpType.Clazz.IsGenericCollection() && !classEpType.Clazz.IsArray)
{
currentInputType = EPTypeHelper.CollectionOfSingleValue(typeof(object), null);
}
eval.Init(streamOfProviderIfApplicable, enumerationMethod, chainElementName, currentInputType, parameters, validationContext);
currentInputType = eval.TypeInfo;
if (currentInputType == null)
{
throw new IllegalStateException("Enumeration method '" + chainElementName + "' has not returned type information");
}
methodForges.Add(eval);
lastLambdaFunc = enumerationMethod;
continue;
}
// resolve datetime
if (DatetimeMethodResolver.IsDateTimeMethod(chainElementName, validationContext.ImportService) &&
(!matchingMethod ||
methodTarget == typeof(DateTimeEx) ||
methodTarget == typeof(DateTimeOffset) ||
methodTarget == typeof(DateTime)))
{
var datetimeMethod = DatetimeMethodResolver.FromName(chainElementName, validationContext.ImportService);
var datetimeImpl = ExprDotDTFactory.ValidateMake(
validationContext.StreamTypeService,
chainSpecStack,
datetimeMethod,
chainElementName,
currentInputType,
parameters,
inputDesc,
validationContext.ImportService.TimeAbacus,
validationContext.TableCompileTimeResolver,
validationContext.ImportService,
validationContext.StatementRawInfo);
currentInputType = datetimeImpl.ReturnType;
if (currentInputType == null)
{
throw new IllegalStateException(
"Date-time method '" + chainElementName + "' has not returned type information");
}
methodForges.Add(datetimeImpl.Forge);
filterAnalyzerDesc = datetimeImpl.IntervalFilterDesc;
continue;
}
// try to resolve as property if the last method returned a type
if (currentInputType is EventEPType)
{
if (chainElement is ChainableArray)
{
throw new ExprValidationException("Could not perform array operation on type " + currentInputType.ToTypeDescriptive());
}
var inputEventType = (EventTypeSPI)((EventEPType)currentInputType).EventType;
var type = inputEventType.GetPropertyType(chainElementName);
var getter = inputEventType.GetGetterSPI(chainElementName);
var fragmentType = inputEventType.GetFragmentType(chainElementName);
ExprDotForge forge;
if (type != null && getter != null)
{
if (fragmentType == null || last)
{
forge = new ExprDotForgeProperty(getter, EPTypeHelper.SingleValue(type.GetBoxedType()));
currentInputType = forge.TypeInfo;
}
else
{
if (!fragmentType.IsIndexed)
{
currentInputType = EPTypeHelper.SingleEvent(fragmentType.FragmentType);
}
else
{
currentInputType = EPTypeHelper.ArrayOfEvents(fragmentType.FragmentType);
}
forge = new ExprDotForgePropertyFragment(getter, currentInputType);
}
methodForges.Add(forge);
continue;
}
}
if (currentInputType is EventMultiValuedEPType eventMultiValuedEpType && chainElement is ChainableArray chainableArray)
{
var inputEventType = (EventTypeSPI)eventMultiValuedEpType.Component;
var typeInfo = currentInputType;
var indexExpr = ChainableArray.ValidateSingleIndexExpr(
chainableArray.Indexes,
() => "operation on type " + typeInfo.ToTypeDescriptive());
currentInputType = EPTypeHelper.SingleEvent(inputEventType);
var forge = new ExprDotForgeEventArrayAtIndex(currentInputType, indexExpr);
methodForges.Add(forge);
continue;
}
// Finally try to resolve the method
if (methodTarget != null && !(chainElement is ChainableArray))
{
try {
// find descriptor again, allow for duck typing
var desc = GetValidateMethodDescriptor(methodTarget, chainElementName, parameters, validationContext);
paramForges = desc.ChildForges;
ExprDotForge forge;
if (currentInputType is ClassEPType)
{
// if followed by an enumeration method, convert array to collection
if (desc.ReflectionMethod.ReturnType.IsArray &&
!chainSpecStack.IsEmpty() &&
EnumMethodResolver.IsEnumerationMethod(chainSpecStack.First.GetRootNameOrEmptyString(), validationContext.ImportService))
{
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.WRAPARRAY);
}
else
{
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.PLAIN);
}
}
else
{
forge = new ExprDotMethodForgeNoDuck(
validationContext.StatementName,
desc.ReflectionMethod,
paramForges,
ExprDotMethodForgeNoDuck.DuckType.UNDERLYING);
}
methodForges.Add(forge);
currentInputType = forge.TypeInfo;
}
catch (Exception e) {
if (!isDuckTyping)
{
throw new ExprValidationException(e.Message, e);
}
var duck = new ExprDotMethodForgeDuck(
validationContext.StatementName,
validationContext.ImportService,
chainElementName,
paramTypes,
paramForges);
methodForges.Add(duck);
currentInputType = duck.TypeInfo;
}
continue;
}
string message;
if (!(chainElement is ChainableArray))
{
message = "Could not find event property or method named '" + chainElementName + "' in " + currentInputType.ToTypeDescriptive();
}
else
{
message = "Could not perform array operation on type " + currentInputType.ToTypeDescriptive();
}
throw new ExprValidationException(message);
}
var intermediateEvals = methodForges.ToArray();
if (lastLambdaFunc != null)
{
ExprDotForge finalEval = null;
if (currentInputType is EventMultiValuedEPType mvType)
{
var tableMetadata = validationContext.TableCompileTimeResolver.ResolveTableFromEventType(mvType.Component);
if (tableMetadata != null)
{
finalEval = new ExprDotForgeUnpackCollEventBeanTable(mvType.Component, tableMetadata);
}
else
{
finalEval = new ExprDotForgeUnpackCollEventBean(mvType.Component);
}
}
else if (currentInputType is EventEPType epType)
{
var tableMetadata = validationContext.TableCompileTimeResolver.ResolveTableFromEventType(epType.EventType);
if (tableMetadata != null)
{
finalEval = new ExprDotForgeUnpackBeanTable(epType.EventType, tableMetadata);
}
else
{
finalEval = new ExprDotForgeUnpackBean(epType.EventType);
}
}
if (finalEval != null)
{
methodForges.Add(finalEval);
}
}
var unpackingForges = methodForges.ToArray();
return(new ExprDotNodeRealizedChain(intermediateEvals, unpackingForges, filterAnalyzerDesc));
}