public EnumMethodMode Validate(EnumMethodValidateContext context)
{
var stateClass = typeof(MyLocalEnumMethodMedianState); // the class providing state
var serviceClass = typeof(MyLocalEnumMethodMedianService); // the class providing the processing method
var methodName = "Next"; // the name of the method for processing an item of input values
EPType returnType = new ClassEPType(typeof(double?)); // indicate that we are returning a Double-type value
var earlyExit = false;
var mode = new EnumMethodModeStaticMethod(stateClass, serviceClass, methodName, returnType, earlyExit);
// we allow 1, 2 or 3 parameters
mode.LambdaParameters = descriptor => {
if (descriptor.LambdaParameterNumber == 1)
{
return(EnumMethodLambdaParameterTypeIndex.INSTANCE);
}
if (descriptor.LambdaParameterNumber == 2)
{
return(EnumMethodLambdaParameterTypeSize.INSTANCE);
}
return(EnumMethodLambdaParameterTypeValue.INSTANCE);
};
return(mode);
}
public static ExprDotEvalDTMethodDesc ValidateMake(
StreamTypeService streamTypeService,
Deque <ExprChainedSpec> chainSpecStack,
DatetimeMethodEnum dtMethod,
String dtMethodName,
EPType inputType,
IList <ExprNode> parameters,
ExprDotNodeFilterAnalyzerInput inputDesc,
TimeZoneInfo timeZone)
{
// verify input
String message = "Date-time enumeration method '" + dtMethodName +
"' requires either a DateTime or long value as input or events of an event type that declares a timestamp property";
if (inputType is EventEPType)
{
if (((EventEPType)inputType).EventType.StartTimestampPropertyName == null)
{
throw new ExprValidationException(message);
}
}
else
{
if (!(inputType is ClassEPType || inputType is NullEPType))
{
throw new ExprValidationException(message + " but received " + EPTypeHelper.ToTypeDescriptive(inputType));
}
if (inputType is ClassEPType)
{
ClassEPType classEPType = (ClassEPType)inputType;
if (!TypeHelper.IsDateTime(classEPType.Clazz))
{
throw new ExprValidationException(
message + " but received " + classEPType.Clazz.GetTypeNameFullyQualPretty());
}
}
}
IList <CalendarOp> calendarOps = new List <CalendarOp>();
ReformatOp reformatOp = null;
IntervalOp intervalOp = null;
DatetimeMethodEnum currentMethod = dtMethod;
IList <ExprNode> currentParameters = parameters;
String currentMethodName = dtMethodName;
// drain all calendar ops
ExprDotNodeFilterAnalyzerDesc filterAnalyzerDesc = null;
while (true)
{
// handle the first one only if its a calendar op
var evaluators = GetEvaluators(currentParameters);
var opFactory = currentMethod.MetaData().OpFactory;
// compile parameter abstract for validation against available footprints
var footprintProvided = DotMethodUtil.GetProvidedFootprint(currentParameters);
// validate parameters
DotMethodUtil.ValidateParametersDetermineFootprint(
currentMethod.Footprints(),
DotMethodTypeEnum.DATETIME,
currentMethodName, footprintProvided,
DotMethodInputTypeMatcherImpl.DEFAULT_ALL);
if (opFactory is CalendarOpFactory)
{
CalendarOp calendarOp = ((CalendarOpFactory)opFactory).GetOp(currentMethod, currentMethodName, currentParameters, evaluators);
calendarOps.Add(calendarOp);
}
else if (opFactory is ReformatOpFactory)
{
reformatOp = ((ReformatOpFactory)opFactory).GetOp(timeZone, currentMethod, currentMethodName, currentParameters);
// compile filter analyzer information if there are no calendar ops in the chain
if (calendarOps.IsEmpty())
{
filterAnalyzerDesc = reformatOp.GetFilterDesc(streamTypeService.EventTypes, currentMethod, currentParameters, inputDesc);
}
else
{
filterAnalyzerDesc = null;
}
}
else if (opFactory is IntervalOpFactory)
{
intervalOp = ((IntervalOpFactory)opFactory).GetOp(streamTypeService, currentMethod, currentMethodName, currentParameters, evaluators);
// compile filter analyzer information if there are no calendar ops in the chain
if (calendarOps.IsEmpty())
{
filterAnalyzerDesc = intervalOp.GetFilterDesc(streamTypeService.EventTypes, currentMethod, currentParameters, inputDesc);
}
else
{
filterAnalyzerDesc = null;
}
}
else
{
throw new IllegalStateException("Invalid op factory class " + opFactory);
}
// see if there is more
if (chainSpecStack.IsEmpty() || !DatetimeMethodEnumExtensions.IsDateTimeMethod(chainSpecStack.First.Name))
{
break;
}
// pull next
var next = chainSpecStack.RemoveFirst();
currentMethod = DatetimeMethodEnumExtensions.FromName(next.Name);
currentParameters = next.Parameters;
currentMethodName = next.Name;
if ((reformatOp != null || intervalOp != null))
{
throw new ExprValidationException("Invalid input for date-time method '" + next.Name + "'");
}
}
ExprDotEval dotEval;
EPType returnType;
dotEval = new ExprDotEvalDT(calendarOps, timeZone, reformatOp, intervalOp, EPTypeHelper.GetClassSingleValued(inputType), EPTypeHelper.GetEventTypeSingleValued(inputType));
returnType = dotEval.TypeInfo;
return(new ExprDotEvalDTMethodDesc(dotEval, returnType, filterAnalyzerDesc));
}
public static CodegenExpression CodegenExprEval(
ExprDotNodeForgeStaticMethod forge,
CodegenMethodScope codegenMethodScope,
ExprForgeCodegenSymbol exprSymbol,
CodegenClassScope codegenClassScope)
{
CodegenExpression isCachedMember = null;
CodegenExpression cachedResultMember = null;
if (forge.IsConstantParameters) {
isCachedMember = codegenClassScope.AddDefaultFieldUnshared(false, typeof(bool), ConstantFalse());
cachedResultMember = codegenClassScope.AddDefaultFieldUnshared(false, typeof(object), ConstantNull());
}
var returnType = forge.StaticMethod.ReturnType;
var methodNode = codegenMethodScope.MakeChild(
forge.EvaluationType,
typeof(ExprDotNodeForgeStaticMethodEval),
codegenClassScope);
var block = methodNode.Block;
// check cached
if (forge.IsConstantParameters) {
var ifCached = block.IfCondition(isCachedMember);
if (returnType == typeof(void)) {
ifCached.BlockReturnNoValue();
}
else {
ifCached.BlockReturn(Cast(forge.EvaluationType, cachedResultMember));
}
}
// generate args
var args = AllArgumentExpressions(
forge.ChildForges,
forge.StaticMethod,
methodNode,
exprSymbol,
codegenClassScope);
AppendArgExpressions(args, methodNode.Block);
// try block
var tryBlock = block.TryCatch();
var invoke = CodegenInvokeExpression(
forge.TargetObject,
forge.StaticMethod,
args,
codegenClassScope);
if (returnType == typeof(void)) {
tryBlock.Expression(invoke);
if (forge.IsConstantParameters) {
tryBlock.AssignRef(isCachedMember, ConstantTrue());
}
tryBlock.BlockReturnNoValue();
}
else {
tryBlock.DeclareVar(returnType, "result", invoke);
if (forge.ChainForges.Length == 0) {
var typeInformation = ConstantNull();
if (codegenClassScope.IsInstrumented) {
typeInformation = codegenClassScope.AddOrGetDefaultFieldSharable(
new EPTypeCodegenSharable(new ClassEPType(forge.EvaluationType), codegenClassScope));
}
tryBlock.Apply(
InstrumentationCode.Instblock(
codegenClassScope,
"qExprDotChain",
typeInformation,
Ref("result"),
Constant(0)));
if (forge.IsConstantParameters) {
tryBlock.AssignRef(cachedResultMember, Ref("result"));
tryBlock.AssignRef(isCachedMember, ConstantTrue());
}
tryBlock.Apply(InstrumentationCode.Instblock(codegenClassScope, "aExprDotChain"))
.BlockReturn(Ref("result"));
}
else {
EPType typeInfo;
if (forge.ResultWrapLambda != null) {
typeInfo = forge.ResultWrapLambda.TypeInfo;
}
else {
typeInfo = new ClassEPType(typeof(object));
}
var typeInformation = ConstantNull();
if (codegenClassScope.IsInstrumented) {
typeInformation = codegenClassScope.AddOrGetDefaultFieldSharable(
new EPTypeCodegenSharable(typeInfo, codegenClassScope));
}
tryBlock.Apply(
InstrumentationCode.Instblock(
codegenClassScope,
"qExprDotChain",
typeInformation,
Ref("result"),
Constant(forge.ChainForges.Length)))
.DeclareVar(
forge.EvaluationType,
"chain",
ExprDotNodeUtility.EvaluateChainCodegen(
methodNode,
exprSymbol,
codegenClassScope,
Ref("result"),
returnType,
forge.ChainForges,
forge.ResultWrapLambda));
if (forge.IsConstantParameters) {
tryBlock.AssignRef(cachedResultMember, Ref("chain"));
tryBlock.AssignRef(isCachedMember, ConstantTrue());
}
tryBlock.Apply(InstrumentationCode.Instblock(codegenClassScope, "aExprDotChain"))
.BlockReturn(Ref("chain"));
}
}
// exception handling
AppendCatch(
tryBlock,
forge.StaticMethod,
forge.OptionalStatementName,
forge.ClassOrPropertyName,
forge.IsRethrowExceptions,
args);
// end method
if (returnType == typeof(void)) {
block.MethodEnd();
}
else {
block.MethodReturn(ConstantNull());
}
return LocalMethod(methodNode);
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
// check for plannable methods: these are validated according to different rules
var appDotMethod = GetAppDotMethod(validationContext.IsFilterExpression);
if (appDotMethod != null) {
return appDotMethod;
}
// validate all parameters
ExprNodeUtilityValidate.Validate(ExprNodeOrigin.DOTNODEPARAMETER, ChainSpec, validationContext);
// determine if there are enumeration method expressions in the chain
var hasEnumerationMethod = false;
foreach (var chain in ChainSpec) {
if (EnumMethodEnumExtensions.IsEnumerationMethod(chain.Name)) {
hasEnumerationMethod = true;
break;
}
}
// determine if there is an implied binding, replace first chain element with evaluation node if there is
if (validationContext.StreamTypeService.HasTableTypes &&
validationContext.TableCompileTimeResolver != null &&
ChainSpec.Count > 1 &&
ChainSpec[0].IsProperty) {
var tableNode = TableCompileTimeUtil.GetTableNodeChainable(
validationContext.StreamTypeService,
ChainSpec,
validationContext.ImportService,
validationContext.TableCompileTimeResolver);
if (tableNode != null) {
var node = ExprNodeUtilityValidate.GetValidatedSubtree(
ExprNodeOrigin.DOTNODE,
tableNode.First,
validationContext);
if (tableNode.Second.IsEmpty()) {
return node;
}
ChainSpec.Clear();
ChainSpec.AddAll(tableNode.Second);
AddChildNode(node);
}
}
// The root node expression may provide the input value:
// Such as "window(*).doIt(...)" or "(select * from Window).doIt()" or "prevwindow(sb).doIt(...)", in which case the expression to act on is a child expression
//
var streamTypeService = validationContext.StreamTypeService;
if (ChildNodes.Length != 0) {
// the root expression is the first child node
var rootNode = ChildNodes[0];
// the root expression may also provide a lambda-function input (Iterator<EventBean>)
// Determine collection-type and evaluator if any for root node
var enumSrc = ExprDotNodeUtility.GetEnumerationSource(
rootNode,
validationContext.StreamTypeService,
hasEnumerationMethod,
validationContext.IsDisablePropertyExpressionEventCollCache,
validationContext.StatementRawInfo,
validationContext.StatementCompileTimeService);
EPType typeInfoX;
if (enumSrc.ReturnType == null) {
typeInfoX = EPTypeHelper.SingleValue(
rootNode.Forge.EvaluationType); // not a collection type, treat as scalar
}
else {
typeInfoX = enumSrc.ReturnType;
}
var evalsX = ExprDotNodeUtility.GetChainEvaluators(
enumSrc.StreamOfProviderIfApplicable,
typeInfoX,
ChainSpec,
validationContext,
isDuckTyping,
new ExprDotNodeFilterAnalyzerInputExpr());
forge = new ExprDotNodeForgeRootChild(
this,
null,
null,
null,
hasEnumerationMethod,
rootNode.Forge,
enumSrc.Enumeration,
typeInfoX,
evalsX.Chain,
evalsX.ChainWithUnpack,
false);
return null;
}
// No root node, and this is a 1-element chain i.e. "something(param,...)".
// Plug-in single-row methods are not handled here.
// Plug-in aggregation methods are not handled here.
if (ChainSpec.Count == 1) {
var spec = ChainSpec[0];
if (spec.Parameters.IsEmpty()) {
throw HandleNotFound(spec.Name);
}
// single-parameter can resolve to a property
Pair<PropertyResolutionDescriptor, string> propertyInfoPairX = null;
try {
propertyInfoPairX = ExprIdentNodeUtil.GetTypeFromStream(
streamTypeService,
spec.Name,
streamTypeService.HasPropertyAgnosticType,
false,
validationContext.TableCompileTimeResolver);
}
catch (ExprValidationPropertyException) {
// fine
}
// if not a property then try built-in single-row non-grammar functions
if (propertyInfoPairX == null &&
spec.Name.ToLowerInvariant()
.Equals(ImportServiceCompileTime.EXT_SINGLEROW_FUNCTION_TRANSPOSE)) {
if (spec.Parameters.Count != 1) {
throw new ExprValidationException(
"The " +
ImportServiceCompileTime.EXT_SINGLEROW_FUNCTION_TRANSPOSE +
" function requires a single parameter expression");
}
forge = new ExprDotNodeForgeTransposeAsStream(this, ChainSpec[0].Parameters[0].Forge);
}
else if (spec.Parameters.Count != 1) {
throw HandleNotFound(spec.Name);
}
else {
if (propertyInfoPairX == null) {
throw new ExprValidationException(
"Unknown single-row function, aggregation function or mapped or indexed property named '" +
spec.Name +
"' could not be resolved");
}
forge = GetPropertyPairEvaluator(spec.Parameters[0].Forge, propertyInfoPairX, validationContext);
}
return null;
}
// handle the case where the first chain spec element is a stream name.
ExprValidationException prefixedStreamNumException = null;
var prefixedStreamNumber = PrefixedStreamName(ChainSpec, validationContext.StreamTypeService);
if (prefixedStreamNumber != -1) {
var specAfterStreamName = ChainSpec[1];
// Attempt to resolve as property
Pair<PropertyResolutionDescriptor, string> propertyInfoPairX = null;
try {
var propName = ChainSpec[0].Name + "." + specAfterStreamName.Name;
propertyInfoPairX = ExprIdentNodeUtil.GetTypeFromStream(
streamTypeService,
propName,
streamTypeService.HasPropertyAgnosticType,
false,
validationContext.TableCompileTimeResolver);
}
catch (ExprValidationPropertyException) {
// fine
}
if (propertyInfoPairX != null) {
if (specAfterStreamName.Parameters.Count != 1) {
throw HandleNotFound(specAfterStreamName.Name);
}
forge = GetPropertyPairEvaluator(
specAfterStreamName.Parameters[0].Forge,
propertyInfoPairX,
validationContext);
return null;
}
// Attempt to resolve as event-underlying object instance method
var eventType = validationContext.StreamTypeService.EventTypes[prefixedStreamNumber];
var type = eventType.UnderlyingType;
IList<ExprChainedSpec> remainderChain = new List<ExprChainedSpec>(ChainSpec);
remainderChain.RemoveAt(0);
ExprValidationException methodEx = null;
ExprDotForge[] underlyingMethodChain = null;
try {
var typeInfoX = EPTypeHelper.SingleValue(type);
if (validationContext.TableCompileTimeResolver.ResolveTableFromEventType(eventType) != null) {
typeInfoX = new ClassEPType(typeof(object[]));
}
underlyingMethodChain = ExprDotNodeUtility.GetChainEvaluators(
prefixedStreamNumber,
typeInfoX,
remainderChain,
validationContext,
false,
new ExprDotNodeFilterAnalyzerInputStream(prefixedStreamNumber))
.ChainWithUnpack;
}
catch (ExprValidationException ex) {
methodEx = ex;
// expected - may not be able to find the methods on the underlying
}
ExprDotForge[] eventTypeMethodChain = null;
ExprValidationException enumDatetimeEx = null;
FilterExprAnalyzerAffector filterExprAnalyzerAffector = null;
try {
var typeInfoX = EPTypeHelper.SingleEvent(eventType);
var chain = ExprDotNodeUtility.GetChainEvaluators(
prefixedStreamNumber,
typeInfoX,
remainderChain,
validationContext,
false,
new ExprDotNodeFilterAnalyzerInputStream(prefixedStreamNumber));
eventTypeMethodChain = chain.ChainWithUnpack;
filterExprAnalyzerAffector = chain.FilterAnalyzerDesc;
}
catch (ExprValidationException ex) {
enumDatetimeEx = ex;
// expected - may not be able to find the methods on the underlying
}
if (underlyingMethodChain != null) {
forge = new ExprDotNodeForgeStream(
this,
filterExprAnalyzerAffector,
prefixedStreamNumber,
eventType,
underlyingMethodChain,
true);
}
else if (eventTypeMethodChain != null) {
forge = new ExprDotNodeForgeStream(
this,
filterExprAnalyzerAffector,
prefixedStreamNumber,
eventType,
eventTypeMethodChain,
false);
}
if (forge != null) {
return null;
}
if (ExprDotNodeUtility.IsDatetimeOrEnumMethod(remainderChain[0].Name)) {
prefixedStreamNumException = enumDatetimeEx;
}
else {
prefixedStreamNumException = new ExprValidationException(
"Failed to solve '" +
remainderChain[0].Name +
"' to either an date-time or enumeration method, an event property or a method on the event underlying object: " +
methodEx.Message,
methodEx);
}
}
// There no root node, in this case the classname or property name is provided as part of the chain.
// Such as "MyClass.myStaticLib(...)" or "mycollectionproperty.doIt(...)"
//
IList<ExprChainedSpec> modifiedChain = new List<ExprChainedSpec>(ChainSpec);
var firstItem = modifiedChain.DeleteAt(0);
Pair<PropertyResolutionDescriptor, string> propertyInfoPair = null;
try {
propertyInfoPair = ExprIdentNodeUtil.GetTypeFromStream(
streamTypeService,
firstItem.Name,
streamTypeService.HasPropertyAgnosticType,
true,
validationContext.TableCompileTimeResolver);
}
catch (ExprValidationPropertyException) {
// not a property
}
// If property then treat it as such
if (propertyInfoPair != null) {
var propertyName = propertyInfoPair.First.PropertyName;
var streamId = propertyInfoPair.First.StreamNum;
var streamType = streamTypeService.EventTypes[streamId];
EPType typeInfoX;
ExprEnumerationForge enumerationForge = null;
EPType inputType;
ExprForge rootNodeForge = null;
EventPropertyGetterSPI getter;
if (firstItem.Parameters.IsEmpty()) {
getter = ((EventTypeSPI) streamType).GetGetterSPI(propertyInfoPair.First.PropertyName);
var propertyEval =
ExprDotNodeUtility.GetPropertyEnumerationSource(
propertyInfoPair.First.PropertyName,
streamId,
streamType,
hasEnumerationMethod,
validationContext.IsDisablePropertyExpressionEventCollCache);
typeInfoX = propertyEval.ReturnType;
enumerationForge = propertyEval.Enumeration;
inputType = propertyEval.ReturnType;
rootNodeForge = new PropertyDotNonLambdaForge(
streamId,
getter,
propertyInfoPair.First.PropertyType.GetBoxedType());
}
else {
// property with parameter - mapped or indexed property
var desc = EventTypeUtility.GetNestablePropertyDescriptor(
streamTypeService.EventTypes[propertyInfoPair.First.StreamNum],
firstItem.Name);
if (firstItem.Parameters.Count > 1) {
throw new ExprValidationException(
"Property '" + firstItem.Name + "' may not be accessed passing 2 or more parameters");
}
var paramEval = firstItem.Parameters[0].Forge;
typeInfoX = EPTypeHelper.SingleValue(desc.PropertyComponentType);
inputType = typeInfoX;
getter = null;
if (desc.IsMapped) {
if (paramEval.EvaluationType != typeof(string)) {
throw new ExprValidationException(
"Parameter expression to mapped property '" +
propertyName +
"' is expected to return a string-type value but returns " +
paramEval.EvaluationType.CleanName());
}
var mappedGetter =
((EventTypeSPI) propertyInfoPair.First.StreamEventType).GetGetterMappedSPI(
propertyInfoPair.First.PropertyName);
if (mappedGetter == null) {
throw new ExprValidationException(
"Mapped property named '" + propertyName + "' failed to obtain getter-object");
}
rootNodeForge = new PropertyDotNonLambdaMappedForge(
streamId,
mappedGetter,
paramEval,
desc.PropertyComponentType);
}
if (desc.IsIndexed) {
if (paramEval.EvaluationType.GetBoxedType() != typeof(int?)) {
throw new ExprValidationException(
"Parameter expression to mapped property '" +
propertyName +
"' is expected to return a Integer-type value but returns " +
paramEval.EvaluationType.CleanName());
}
var indexedGetter =
((EventTypeSPI) propertyInfoPair.First.StreamEventType).GetGetterIndexedSPI(
propertyInfoPair.First.PropertyName);
if (indexedGetter == null) {
throw new ExprValidationException(
"Mapped property named '" + propertyName + "' failed to obtain getter-object");
}
rootNodeForge = new PropertyDotNonLambdaIndexedForge(
streamId,
indexedGetter,
paramEval,
desc.PropertyComponentType);
}
}
if (typeInfoX == null) {
throw new ExprValidationException(
"Property '" + propertyName + "' is not a mapped or indexed property");
}
// try to build chain based on the input (non-fragment)
ExprDotNodeRealizedChain evalsX;
var filterAnalyzerInputProp = new ExprDotNodeFilterAnalyzerInputProp(
propertyInfoPair.First.StreamNum,
propertyInfoPair.First.PropertyName);
var rootIsEventBean = false;
try {
evalsX = ExprDotNodeUtility.GetChainEvaluators(
streamId,
inputType,
modifiedChain,
validationContext,
isDuckTyping,
filterAnalyzerInputProp);
}
catch (ExprValidationException) {
// try building the chain based on the fragment event type (i.e. A.after(B) based on A-configured start time where A is a fragment)
var fragment = propertyInfoPair.First.FragmentEventType;
if (fragment == null) {
throw;
}
EPType fragmentTypeInfo;
if (fragment.IsIndexed) {
fragmentTypeInfo = EPTypeHelper.CollectionOfEvents(fragment.FragmentType);
}
else {
fragmentTypeInfo = EPTypeHelper.SingleEvent(fragment.FragmentType);
}
rootIsEventBean = true;
evalsX = ExprDotNodeUtility.GetChainEvaluators(
propertyInfoPair.First.StreamNum,
fragmentTypeInfo,
modifiedChain,
validationContext,
isDuckTyping,
filterAnalyzerInputProp);
rootNodeForge = new PropertyDotNonLambdaFragmentForge(streamId, getter);
}
var filterExprAnalyzerAffector = evalsX.FilterAnalyzerDesc;
var streamNumReferenced = propertyInfoPair.First.StreamNum;
var rootPropertyName = propertyInfoPair.First.PropertyName;
forge = new ExprDotNodeForgeRootChild(
this,
filterExprAnalyzerAffector,
streamNumReferenced,
rootPropertyName,
hasEnumerationMethod,
rootNodeForge,
enumerationForge,
inputType,
evalsX.Chain,
evalsX.ChainWithUnpack,
!rootIsEventBean);
return null;
}
// If variable then resolve as such
var variable = validationContext.VariableCompileTimeResolver.Resolve(firstItem.Name);
if (variable != null) {
if (variable.OptionalContextName != null) {
throw new ExprValidationException(
"Method invocation on context-specific variable is not supported");
}
EPType typeInfoX;
ExprDotStaticMethodWrap wrap;
if (variable.Type.IsArray) {
typeInfoX = EPTypeHelper.CollectionOfSingleValue(
variable.Type.GetElementType(),
variable.Type);
wrap = new ExprDotStaticMethodWrapArrayScalar(variable.VariableName, variable.Type);
}
else if (variable.EventType != null) {
typeInfoX = EPTypeHelper.SingleEvent(variable.EventType);
wrap = null;
}
else {
typeInfoX = EPTypeHelper.SingleValue(variable.Type);
wrap = null;
}
var evalsX = ExprDotNodeUtility.GetChainEvaluators(
null,
typeInfoX,
modifiedChain,
validationContext,
false,
new ExprDotNodeFilterAnalyzerInputStatic());
forge = new ExprDotNodeForgeVariable(this, variable, wrap, evalsX.ChainWithUnpack);
return null;
}
// try resolve as enumeration class with value
var enumconstant = ImportCompileTimeUtil.ResolveIdentAsEnumConst(
firstItem.Name,
validationContext.ImportService,
false);
if (enumconstant != null) {
// try resolve method
var methodSpec = modifiedChain[0];
var enumvalue = firstItem.Name;
ExprNodeUtilResolveExceptionHandler handler = new ProxyExprNodeUtilResolveExceptionHandler {
ProcHandle = ex => {
return new ExprValidationException(
"Failed to resolve method '" +
methodSpec.Name +
"' on enumeration value '" +
enumvalue +
"': " +
ex.Message);
}
};
var wildcardType = validationContext.StreamTypeService.EventTypes.Length != 1
? null
: validationContext.StreamTypeService.EventTypes[0];
var methodDesc = ExprNodeUtilityResolve.ResolveMethodAllowWildcardAndStream(
enumconstant.GetType().Name,
enumconstant.GetType(),
methodSpec.Name,
methodSpec.Parameters,
wildcardType != null,
wildcardType,
handler,
methodSpec.Name,
validationContext.StatementRawInfo,
validationContext.StatementCompileTimeService);
// method resolved, hook up
modifiedChain.RemoveAt(0); // we identified this piece
var optionalLambdaWrapX = ExprDotStaticMethodWrapFactory.Make(
methodDesc.ReflectionMethod,
modifiedChain,
null,
validationContext);
var typeInfoX = optionalLambdaWrapX != null
? optionalLambdaWrapX.TypeInfo
: EPTypeHelper.SingleValue(methodDesc.ReflectionMethod.ReturnType);
var evalsX = ExprDotNodeUtility.GetChainEvaluators(
null,
typeInfoX,
modifiedChain,
validationContext,
false,
new ExprDotNodeFilterAnalyzerInputStatic());
forge = new ExprDotNodeForgeStaticMethod(
this,
false,
firstItem.Name,
methodDesc.ReflectionMethod,
methodDesc.ChildForges,
false,
evalsX.ChainWithUnpack,
optionalLambdaWrapX,
false,
enumconstant,
validationContext.StatementName);
return null;
}
// if prefixed by a stream name, we are giving up
if (prefixedStreamNumException != null) {
throw prefixedStreamNumException;
}
// If class then resolve as class
var secondItem = modifiedChain.DeleteAt(0);
var allowWildcard = validationContext.StreamTypeService.EventTypes.Length == 1;
EventType streamZeroType = null;
if (validationContext.StreamTypeService.EventTypes.Length > 0) {
streamZeroType = validationContext.StreamTypeService.EventTypes[0];
}
var method = ExprNodeUtilityResolve.ResolveMethodAllowWildcardAndStream(
firstItem.Name,
null,
secondItem.Name,
secondItem.Parameters,
allowWildcard,
streamZeroType,
new ExprNodeUtilResolveExceptionHandlerDefault(firstItem.Name + "." + secondItem.Name, false),
secondItem.Name,
validationContext.StatementRawInfo,
validationContext.StatementCompileTimeService);
var isConstantParameters = method.IsAllConstants && isUDFCache;
var isReturnsConstantResult = isConstantParameters && modifiedChain.IsEmpty();
// this may return a pair of null if there is no lambda or the result cannot be wrapped for lambda-function use
var optionalLambdaWrap = ExprDotStaticMethodWrapFactory.Make(
method.ReflectionMethod,
modifiedChain,
null,
validationContext);
var typeInfo = optionalLambdaWrap != null
? optionalLambdaWrap.TypeInfo
: EPTypeHelper.SingleValue(method.ReflectionMethod.ReturnType);
var evals = ExprDotNodeUtility.GetChainEvaluators(
null,
typeInfo,
modifiedChain,
validationContext,
false,
new ExprDotNodeFilterAnalyzerInputStatic());
forge = new ExprDotNodeForgeStaticMethod(
this,
isReturnsConstantResult,
firstItem.Name,
method.ReflectionMethod,
method.ChildForges,
isConstantParameters,
evals.ChainWithUnpack,
optionalLambdaWrap,
false,
null,
validationContext.StatementName);
return null;
}
