public ExprEvalEnumerationAtBeanSingleForge(
ExprEnumerationForge enumerationForge,
EventType eventTypeSingle)
{
this.enumerationForge = enumerationForge;
this.eventTypeSingle = eventTypeSingle;
}
public ExprEvalEnumerationAtBeanColl(
ExprEnumerationForge enumerationForge,
EventType eventTypeColl)
{
this.enumerationForge = enumerationForge;
this.eventTypeColl = eventTypeColl;
}
public ExprEvalEnumerationAtBeanCollTable(
ExprEnumerationForge enumerationForge,
TableMetaData table)
{
this.enumerationForge = enumerationForge;
this.table = table;
}
public ExprDotNodeForgeRootChild(
ExprDotNodeImpl parent,
FilterExprAnalyzerAffector filterExprAnalyzerAffector,
int? streamNumReferenced,
string rootPropertyName,
bool hasEnumerationMethod,
ExprForge rootNodeForge,
ExprEnumerationForge rootLambdaEvaluator,
EPType typeInfo,
ExprDotForge[] forgesIteratorEventBean,
ExprDotForge[] forgesUnpacking,
bool checkedUnpackEvent)
{
Parent = parent;
FilterExprAnalyzerAffector = filterExprAnalyzerAffector;
StreamNumReferenced = streamNumReferenced;
RootPropertyName = rootPropertyName;
if (rootLambdaEvaluator != null) {
if (typeInfo is EventMultiValuedEPType eventMultiValuedEpType) {
innerForge = new InnerDotEnumerableEventCollectionForge(
rootLambdaEvaluator,
eventMultiValuedEpType.Component);
}
else if (typeInfo is EventEPType eventEpType) {
innerForge = new InnerDotEnumerableEventBeanForge(
rootLambdaEvaluator,
eventEpType.EventType);
}
else {
innerForge = new InnerDotEnumerableScalarCollectionForge(
rootLambdaEvaluator,
((ClassMultiValuedEPType) typeInfo).Component);
}
}
else {
if (checkedUnpackEvent) {
innerForge = new InnerDotScalarUnpackEventForge(rootNodeForge);
}
else {
var returnType = rootNodeForge.EvaluationType;
if (hasEnumerationMethod && returnType.IsArray) {
if (returnType.GetElementType().CanNotBeNull()) {
innerForge = new InnerDotArrPrimitiveToCollForge(rootNodeForge);
}
else {
innerForge = new InnerDotArrObjectToCollForge(rootNodeForge);
}
}
else if (hasEnumerationMethod && returnType.IsGenericCollection()) {
innerForge = new InnerDotCollForge(rootNodeForge);
}
else {
innerForge = new InnerDotScalarForge(rootNodeForge);
}
}
}
this.forgesUnpacking = forgesUnpacking;
this.forgesIteratorEventBean = forgesIteratorEventBean;
}
public InnerDotEnumerableScalarCollectionForge(
ExprEnumerationForge rootLambdaForge,
Type componentType)
{
this.rootLambdaForge = rootLambdaForge;
this.componentType = componentType;
}
public InnerDotEnumerableEventBeanForge(
ExprEnumerationForge rootLambdaForge,
EventType eventType)
{
this.rootLambdaForge = rootLambdaForge;
this.eventType = eventType;
}
public ExprEvalEnumerationSingleToCollForge(
ExprEnumerationForge enumerationForge,
EventType targetType)
{
this._ = enumerationForge;
this._targetType = targetType;
}
public EnumExceptForge(
int numStreams,
ExprEnumerationForge evaluatorForge,
bool scalar)
{
StreamNumSize = numStreams;
this.evaluatorForge = evaluatorForge;
this.scalar = scalar;
}
public ExprDotEnumerationSourceForgeForProps(
ExprEnumerationForge enumeration,
EPType returnType,
int? streamOfProviderIfApplicable,
ExprEnumerationGivenEventForge enumerationGivenEvent)
: base(returnType, streamOfProviderIfApplicable, enumeration)
{
EnumerationGivenEvent = enumerationGivenEvent;
}
public ExprEnumerationForgeDesc(
ExprEnumerationForge forge,
bool istreamOnly,
int directIndexStreamNumber)
{
Forge = forge;
IsIstreamOnly = istreamOnly;
DirectIndexStreamNumber = directIndexStreamNumber;
}
public EnumUnionForge(
int numStreams,
ExprEnumerationForge evaluatorForge,
bool scalar)
{
_numStreams = numStreams;
this.evaluatorForge = evaluatorForge;
this.scalar = scalar;
}
public ExprDotEnumerationSourceForge(
EPType returnType,
int? streamOfProviderIfApplicable,
ExprEnumerationForge enumeration)
{
ReturnType = returnType;
StreamOfProviderIfApplicable = streamOfProviderIfApplicable;
Enumeration = enumeration;
}
public ExprEvalEnumerationCollForge(
ExprEnumerationForge enumerationForge,
EventType targetType,
bool firstRowOnly)
{
this._enumerationForge = enumerationForge;
this._targetType = targetType;
this._firstRowOnly = firstRowOnly;
}
public EnumIntersectForge(
int numStreams,
ExprEnumerationForge evaluatorForge,
bool scalar)
{
this.numStreams = numStreams;
this.evaluatorForge = evaluatorForge;
this.scalar = scalar;
}
public static ExprDotEnumerationSourceForge GetEnumerationSource(
ExprNode inputExpression,
StreamTypeService streamTypeService,
bool hasEnumerationMethod,
bool disablePropertyExpressionEventCollCache,
StatementRawInfo statementRawInfo,
StatementCompileTimeServices compileTimeServices)
{
var rootNodeForge = inputExpression.Forge;
ExprEnumerationForge rootLambdaForge = null;
EPType info = null;
if (rootNodeForge is ExprEnumerationForge) {
rootLambdaForge = (ExprEnumerationForge) rootNodeForge;
var eventTypeCollection =
rootLambdaForge.GetEventTypeCollection(statementRawInfo, compileTimeServices);
if (eventTypeCollection != null) {
info = EPTypeHelper.CollectionOfEvents(eventTypeCollection);
}
if (info == null) {
var eventTypeSingle =
rootLambdaForge.GetEventTypeSingle(statementRawInfo, compileTimeServices);
if (eventTypeSingle != null) {
info = EPTypeHelper.SingleEvent(eventTypeSingle);
}
}
if (info == null) {
var componentType = rootLambdaForge.ComponentTypeCollection;
if (componentType != null) {
info = EPTypeHelper.CollectionOfSingleValue(
rootLambdaForge.ComponentTypeCollection,
typeof(ICollection<>).MakeGenericType(componentType));
}
}
if (info == null) {
rootLambdaForge = null; // not a lambda evaluator
}
}
else if (inputExpression is ExprIdentNode) {
var identNode = (ExprIdentNode) inputExpression;
var streamId = identNode.StreamId;
var streamType = streamTypeService.EventTypes[streamId];
return GetPropertyEnumerationSource(
identNode.ResolvedPropertyName,
streamId,
streamType,
hasEnumerationMethod,
disablePropertyExpressionEventCollCache);
}
return new ExprDotEnumerationSourceForge(info, null, rootLambdaForge);
}
public ExprEvalStreamNumEnumCollForge(ExprEnumerationForge enumeration)
{
_enumeration = enumeration;
// NOTE: the forge knows the type that needs to be rendered. In Java, they use the
// generic "Collection" type which allows them to not specify which type of collection
// they are using. In C# we have strong type checking which means we need to know.
// Unfortunately, this data is only known in the ExprForge. Revisit this.
_evaluationType = typeof(FlexCollection);
}
private bool IsEventProviding(
ExprNode parameter,
ExprValidationContext validationContext)
{
if (parameter is ExprEnumerationForgeProvider) {
ExprEnumerationForgeProvider provider = (ExprEnumerationForgeProvider) parameter;
ExprEnumerationForgeDesc desc = provider.GetEnumerationForge(
validationContext.StreamTypeService,
validationContext.ContextDescriptor);
EventType eventType = desc?.Forge.GetEventTypeSingle(validationContext.StatementRawInfo, validationContext.StatementCompileTimeService);
return eventType != null;
}
ExprForge forge = parameter.Forge;
ExprEnumerationForge enumerationForge = forge as ExprEnumerationForge;
return enumerationForge?.GetEventTypeSingle(
validationContext.StatementRawInfo, validationContext.StatementCompileTimeService) != null;
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
this.exprValidationContext = validationContext;
var prototype = PrototypeWVisibility;
if (prototype.IsAlias) {
if (!ChainParameters.IsEmpty()) {
throw new ExprValidationException("Expression '" + prototype.Name + " is an expression-alias and does not allow parameters");
}
try {
ExpressionBodyCopy = ExprNodeUtilityValidate.GetValidatedSubtree(
ExprNodeOrigin.ALIASEXPRBODY,
ExpressionBodyCopy,
validationContext);
}
catch (ExprValidationException ex) {
var message = "Failed to validate expression alias '" + prototype.Name + "': " + ex.Message;
throw new ExprValidationException(message, ex);
}
forge = ExpressionBodyCopy.Forge;
return null;
}
if (forge != null) {
return null; // already evaluated
}
if (ChildNodes.Length > 0) {
throw new IllegalStateException("Execution node has its own child nodes");
}
// validate chain
IList<ExprNode> validated = new List<ExprNode>();
foreach (var expr in ChainParameters) {
validated.Add(
ExprNodeUtilityValidate.GetValidatedSubtree(
ExprNodeOrigin.DECLAREDEXPRPARAM,
expr,
validationContext));
}
ChainParameters = validated;
// validate parameter count
CheckParameterCount();
// collect event and value (non-event) parameters
List<int> valueParameters = new List<int>();
List<int> eventParameters = new List<int>();
for (int i = 0; i < prototype.ParametersNames.Length; i++) {
ExprNode parameter = ChainParameters[i];
if (parameter is ExprWildcard) {
if (validationContext.StreamTypeService.EventTypes.Length != 1) {
throw new ExprValidationException("Expression '" + prototype.Name + "' only allows a wildcard parameter if there is a single stream available, please use a stream or tag name instead");
}
}
if (IsEventProviding(parameter, validationContext)) {
eventParameters.Add(i);
} else {
valueParameters.Add(i);
}
}
// determine value event type for holding non-event parameter values, if any
ObjectArrayEventType valueEventType = null;
List<ExprNode> valueExpressions = new List<ExprNode>(valueParameters.Count);
if (!valueParameters.IsEmpty()) {
var valuePropertyTypes = new LinkedHashMap<string, object>();
foreach (int index in valueParameters) {
String name = prototype.ParametersNames[index];
ExprNode expr = ChainParameters[index];
var result = Boxing.GetBoxedType(expr.Forge.EvaluationType);
valuePropertyTypes.Put(name, result);
valueExpressions.Add(expr);
}
valueEventType = ExprDotNodeUtility.MakeTransientOAType(
PrototypeWVisibility.Name,
valuePropertyTypes,
validationContext.StatementRawInfo,
validationContext.StatementCompileTimeService);
}
// create context for expression body
int numEventTypes = eventParameters.Count + (valueEventType == null ? 0 : 1);
EventType[] eventTypes = new EventType[numEventTypes];
String[] streamNames = new String[numEventTypes];
bool[] isIStreamOnly = new bool[numEventTypes];
ExprEnumerationForge[] eventEnumerationForges = new ExprEnumerationForge[numEventTypes];
allStreamIdsMatch = true;
int offsetEventType = 0;
if (valueEventType != null) {
offsetEventType = 1;
eventTypes[0] = valueEventType;
streamNames[0] = INTERNAL_VALUE_STREAMNAME;
isIStreamOnly[0] = true;
allStreamIdsMatch = false;
}
bool forceOptionalStream = false;
foreach (int index in eventParameters) {
ExprNode parameter = ChainParameters[index];
streamNames[offsetEventType] = prototype.ParametersNames[index];
int streamId;
bool istreamOnlyFlag;
ExprEnumerationForge forge;
if (parameter is ExprEnumerationForgeProvider) {
ExprEnumerationForgeProvider enumerationForgeProvider = (ExprEnumerationForgeProvider) parameter;
ExprEnumerationForgeDesc desc = enumerationForgeProvider.GetEnumerationForge(
validationContext.StreamTypeService, validationContext.ContextDescriptor);
forge = desc.Forge;
streamId = desc.DirectIndexStreamNumber;
istreamOnlyFlag = desc.IsIstreamOnly;
} else {
forge = (ExprEnumerationForge) parameter.Forge;
istreamOnlyFlag = false;
streamId = -1;
forceOptionalStream = true; // since they may return null, i.e. subquery returning no row or multiple rows etc.
}
isIStreamOnly[offsetEventType] = istreamOnlyFlag;
eventEnumerationForges[offsetEventType] = forge;
eventTypes[offsetEventType] = forge.GetEventTypeSingle(validationContext.StatementRawInfo, validationContext.StatementCompileTimeService);
if (streamId != index) {
allStreamIdsMatch = false;
}
offsetEventType++;
}
var streamTypeService = validationContext.StreamTypeService;
var optionalStream = forceOptionalStream || streamTypeService.IsOptionalStreams;
var copyTypes = new StreamTypeServiceImpl(
eventTypes,
streamNames,
isIStreamOnly,
streamTypeService.IsOnDemandStreams,
optionalStream);
copyTypes.RequireStreamNames = true;
// validate expression body in this context
try {
var expressionBodyContext = new ExprValidationContext(copyTypes, validationContext);
ExpressionBodyCopy = ExprNodeUtilityValidate.GetValidatedSubtree(
ExprNodeOrigin.DECLAREDEXPRBODY,
ExpressionBodyCopy,
expressionBodyContext);
}
catch (ExprValidationException ex) {
var message = "Failed to validate expression declaration '" + prototype.Name + "': " + ex.Message;
throw new ExprValidationException(message, ex);
}
// analyze child node
var summaryVisitor = new ExprNodeSummaryVisitor();
ExpressionBodyCopy.Accept(summaryVisitor);
var isCache = !(summaryVisitor.HasAggregation || summaryVisitor.HasPreviousPrior);
isCache &= validationContext.StatementCompileTimeService.Configuration.Compiler.Execution
.IsEnabledDeclaredExprValueCache;
// determine a suitable evaluation
var audit = AuditEnum.EXPRDEF.GetAudit(validationContext.Annotations) != null;
var statementName = validationContext.StatementName;
if (ExpressionBodyCopy.Forge.ForgeConstantType.IsConstant) {
// pre-evaluated
forge = new ExprDeclaredForgeConstant(
this,
ExpressionBodyCopy.Forge.EvaluationType,
prototype,
ExpressionBodyCopy.Forge.ExprEvaluator.Evaluate(null, true, null),
audit,
statementName);
}
else if (valueEventType == null &&
prototype.ParametersNames.Length == 0 ||
allStreamIdsMatch && prototype.ParametersNames.Length == streamTypeService.EventTypes.Length) {
forge = new ExprDeclaredForgeNoRewrite(
this, ExpressionBodyCopy.Forge, isCache, audit, statementName);
}
else if (valueEventType == null) {
forge = new ExprDeclaredForgeRewrite(
this, ExpressionBodyCopy.Forge, isCache, eventEnumerationForges, audit, statementName);
}
else {
// cache is always false
forge = new ExprDeclaredForgeRewriteWValue(
this, ExpressionBodyCopy.Forge, false, audit, statementName, eventEnumerationForges, valueEventType, valueExpressions);
}
return null;
}
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;
}
public ExprEvalStreamNumEnumSingleForge(ExprEnumerationForge enumeration)
{
this.enumeration = enumeration;
}
public static ExprDotEnumerationSourceForgeForProps GetPropertyEnumerationSource(
string propertyName,
int streamId,
EventType streamType,
bool allowEnumType,
bool disablePropertyExpressionEventCollCache)
{
var propertyType = streamType.GetPropertyType(propertyName);
var typeInfo = EPTypeHelper.SingleValue(propertyType); // assume scalar for now
// no enumeration methods, no need to expose as an enumeration
if (!allowEnumType) {
return new ExprDotEnumerationSourceForgeForProps(null, typeInfo, streamId, null);
}
var fragmentEventType = streamType.GetFragmentType(propertyName);
var getter = ((EventTypeSPI) streamType).GetGetterSPI(propertyName);
ExprEnumerationForge enumEvaluator = null;
if (getter != null && fragmentEventType != null) {
if (fragmentEventType.IsIndexed) {
enumEvaluator = new PropertyDotEventCollectionForge(
propertyName,
streamId,
fragmentEventType.FragmentType,
getter,
disablePropertyExpressionEventCollCache);
typeInfo = EPTypeHelper.CollectionOfEvents(fragmentEventType.FragmentType);
}
else { // we don't want native to require an eventbean instance
enumEvaluator = new PropertyDotEventSingleForge(streamId, fragmentEventType.FragmentType, getter);
typeInfo = EPTypeHelper.SingleEvent(fragmentEventType.FragmentType);
}
}
else {
var desc = EventTypeUtility.GetNestablePropertyDescriptor(streamType, propertyName);
if (desc != null && desc.IsIndexed && !desc.IsRequiresIndex && desc.PropertyComponentType != null) {
if (propertyType == typeof(string)) {
enumEvaluator = new PropertyDotScalarStringForge(
propertyName,
streamId,
getter);
}
else if (propertyType.IsArray) {
enumEvaluator = new PropertyDotScalarArrayForge(
propertyName,
streamId,
getter,
desc.PropertyComponentType,
desc.PropertyType);
}
else if (propertyType.IsGenericCollection()) {
enumEvaluator = new PropertyDotScalarCollection(
propertyName,
streamId,
getter,
desc.PropertyComponentType);
}
else if (propertyType.IsGenericEnumerable()) {
enumEvaluator = new PropertyDotScalarIterable(
propertyName,
streamId,
getter,
desc.PropertyComponentType,
propertyType);
}
else {
throw new IllegalStateException(
"Property indicated indexed-type but failed to find proper collection adapter for use with enumeration methods");
}
typeInfo = EPTypeHelper.CollectionOfSingleValue(
desc.PropertyComponentType,
desc.PropertyType);
}
}
return new ExprDotEnumerationSourceForgeForProps(
enumEvaluator,
typeInfo,
streamId,
(ExprEnumerationGivenEventForge) enumEvaluator);
}