/// <summary>Searched recursivly for pattern evaluation filter nodes. </summary>
/// <param name="currentNode">is the root node</param>
/// <returns>list of filter nodes</returns>
public static EvalNodeAnalysisResult RecursiveAnalyzeChildNodes(EvalForgeNode currentNode)
{
var evalNodeAnalysisResult = new EvalNodeAnalysisResult();
RecursiveAnalyzeChildNodes(evalNodeAnalysisResult, currentNode);
return(evalNodeAnalysisResult);
}
public static ISet<string> AssignEventAsTagNumber(
ISet<string> priorAllTags,
EvalForgeNode evalForgeNode)
{
var allTagNamesOrdered = new LinkedHashSet<string>();
var filterFactoryNodes = EvalNodeUtil.RecursiveGetChildNodes(
evalForgeNode,
StreamSpecCompiler.FilterForFilterFactoryNodes.INSTANCE);
if (priorAllTags != null) {
allTagNamesOrdered.AddAll(priorAllTags);
}
foreach (var filterNode in filterFactoryNodes) {
var forge = (EvalFilterForgeNode) filterNode;
int tagNumber;
if (forge.EventAsName != null) {
if (!allTagNamesOrdered.Contains(forge.EventAsName)) {
allTagNamesOrdered.Add(forge.EventAsName);
tagNumber = allTagNamesOrdered.Count - 1;
}
else {
tagNumber = FindTagNumber(forge.EventAsName, allTagNamesOrdered);
}
forge.EventAsTagNumber = tagNumber;
}
}
return allTagNamesOrdered;
}
public ContextSpecConditionPattern(
EvalForgeNode patternRaw,
bool inclusive,
bool immediate)
{
PatternRaw = patternRaw;
IsInclusive = inclusive;
IsImmediate = immediate;
}
public EvalRootForgeNode(
bool attachPatternText,
EvalForgeNode childNode,
Attribute[] annotations)
: base(attachPatternText)
{
AddChildNode(childNode);
bool audit = AuditEnum.PATTERN.GetAudit(annotations) != null ||
AuditEnum.PATTERNINSTANCES.GetAudit(annotations) != null;
AssignFactoryNodeIds(audit);
}
public PatternStreamSpecRaw(
EvalForgeNode evalForgeNode,
ViewSpec[] viewSpecs,
string optionalStreamName,
StreamSpecOptions streamSpecOptions,
bool suppressSameEventMatches,
bool discardPartialsOnMatch)
: base(optionalStreamName, viewSpecs, streamSpecOptions)
{
EvalForgeNode = evalForgeNode;
IsSuppressSameEventMatches = suppressSameEventMatches;
IsDiscardPartialsOnMatch = discardPartialsOnMatch;
}
private bool IsConsumingFiltersRecursive(EvalForgeNode evalNode)
{
if (evalNode is EvalFilterForgeNode) {
return ((EvalFilterForgeNode) evalNode).ConsumptionLevel != null;
}
var consumption = false;
foreach (var child in evalNode.ChildNodes) {
consumption = consumption || IsConsumingFiltersRecursive(child);
}
return consumption;
}
private static void CollectPatternExpressions(
IList<ExprNode> expressions,
EvalForgeNode patternExpression)
{
var filter = patternExpression as EvalFilterForgeNode;
if (filter?.RawFilterSpec.FilterExpressions != null) {
expressions.AddAll(filter.RawFilterSpec.FilterExpressions);
}
foreach (EvalForgeNode child in patternExpression.ChildNodes) {
CollectPatternExpressions(expressions, child);
}
}
/// <summary>
/// Returns all child nodes as a set.
/// </summary>
/// <param name="currentNode">parent node</param>
/// <param name="filter">The filter.</param>
/// <returns>all child nodes</returns>
public static ICollection <EvalForgeNode> RecursiveGetChildNodes(
EvalForgeNode currentNode,
EvalNodeUtilFactoryFilter filter)
{
ICollection <EvalForgeNode> result = new LinkedHashSet <EvalForgeNode>();
if (filter.Consider(currentNode))
{
result.Add(currentNode);
}
RecursiveGetChildNodes(result, currentNode, filter);
return(result);
}
private static StreamTypeService GetStreamTypeService(
IDictionary<string, Pair<EventType, string>> taggedEventTypes,
IDictionary<string, Pair<EventType, string>> arrayEventTypes,
EvalForgeNode forge,
int streamNum,
StatementRawInfo statementRawInfo,
StatementCompileTimeServices services)
{
var filterTypes = new LinkedHashMap<string, Pair<EventType, string>>();
filterTypes.PutAll(taggedEventTypes);
// handle array tags (match-until clause)
if (arrayEventTypes != null) {
var eventTypeName =
services.EventTypeNameGeneratorStatement.GetAnonymousPatternName(streamNum, forge.FactoryNodeId);
var metadata = new EventTypeMetadata(
eventTypeName,
statementRawInfo.ModuleName,
EventTypeTypeClass.PATTERNDERIVED,
EventTypeApplicationType.MAP,
NameAccessModifier.TRANSIENT,
EventTypeBusModifier.NONBUS,
false,
EventTypeIdPair.Unassigned());
var mapProperties = GetMapProperties(
new Dictionary<string, Pair<EventType, string>>(),
arrayEventTypes);
var mapEventType = BaseNestableEventUtil.MakeMapTypeCompileTime(
metadata,
mapProperties,
null,
null,
null,
null,
services.BeanEventTypeFactoryPrivate,
services.EventTypeCompileTimeResolver);
services.EventTypeCompileTimeRegistry.NewType(mapEventType);
EventType arrayTagCompositeEventType = mapEventType;
foreach (var entry in arrayEventTypes) {
var tag = entry.Key;
if (!filterTypes.ContainsKey(tag)) {
var pair = new Pair<EventType, string>(arrayTagCompositeEventType, tag);
filterTypes.Put(tag, pair);
}
}
}
return new StreamTypeServiceImpl(filterTypes, true, false);
}
public static ISet<string> GetTagNumbers(EvalForgeNode evalForgeNode)
{
var tags = new HashSet<string>();
var filterFactoryNodes = EvalNodeUtil.RecursiveGetChildNodes(
evalForgeNode,
StreamSpecCompiler.FilterForFilterFactoryNodes.INSTANCE);
foreach (var filterNode in filterFactoryNodes) {
var forge = (EvalFilterForgeNode) filterNode;
if (forge.EventAsName != null) {
tags.Add(forge.EventAsName);
}
}
return tags;
}
private static void RecursiveGetChildNodes(
ICollection <EvalForgeNode> set,
EvalForgeNode currentNode,
EvalNodeUtilFactoryFilter filter)
{
foreach (var node in currentNode.ChildNodes)
{
if (filter.Consider(node))
{
set.Add(node);
}
RecursiveGetChildNodes(set, node, filter);
}
}
private static bool IsParentMatchUntil(
EvalForgeNode currentNode,
Stack<EvalForgeNode> parentNodeStack)
{
if (parentNodeStack.IsEmptyCollection()) {
return false;
}
foreach (var deepParent in parentNodeStack) {
if (deepParent is EvalMatchUntilForgeNode) {
var matchUntilFactoryNode = (EvalMatchUntilForgeNode) deepParent;
if (matchUntilFactoryNode.ChildNodes[0] == currentNode) {
return true;
}
}
}
return false;
}
private static MatchEventSpec AnalyzeMatchEvent(EvalForgeNode relativeNode)
{
var taggedEventTypes = new LinkedHashMap<string, Pair<EventType, string>>();
var arrayEventTypes = new LinkedHashMap<string, Pair<EventType, string>>();
// Determine all the filter nodes used in the pattern
var evalNodeAnalysisResult = EvalNodeUtil.RecursiveAnalyzeChildNodes(relativeNode);
// collect all filters underneath
foreach (var filterNode in evalNodeAnalysisResult.FilterNodes) {
var optionalTag = filterNode.EventAsName;
if (optionalTag != null) {
taggedEventTypes.Put(
optionalTag,
new Pair<EventType, string>(
filterNode.FilterSpecCompiled.FilterForEventType,
filterNode.FilterSpecCompiled.FilterForEventTypeName));
}
}
// collect those filters under a repeat since they are arrays
ISet<string> arrayTags = new HashSet<string>();
foreach (var matchUntilNode in evalNodeAnalysisResult.RepeatNodes) {
var matchUntilAnalysisResult = EvalNodeUtil.RecursiveAnalyzeChildNodes(matchUntilNode.ChildNodes[0]);
foreach (var filterNode in matchUntilAnalysisResult.FilterNodes) {
var optionalTag = filterNode.EventAsName;
if (optionalTag != null) {
arrayTags.Add(optionalTag);
}
}
}
// for each array tag change collection
foreach (var arrayTag in arrayTags) {
if (taggedEventTypes.Get(arrayTag) != null) {
arrayEventTypes.Put(arrayTag, taggedEventTypes.Get(arrayTag));
taggedEventTypes.Remove(arrayTag);
}
}
return new MatchEventSpec(taggedEventTypes, arrayEventTypes);
}
public static EvalForgeNode PatternGetRemoveTopNode(
ITree node,
IDictionary<ITree, EvalForgeNode> astPatternNodeMap)
{
EvalForgeNode pattern = astPatternNodeMap.Get(node);
if (pattern != null)
{
astPatternNodeMap.Remove(node);
return pattern;
}
for (int i = 0; i < node.ChildCount; i++)
{
pattern = PatternGetRemoveTopNode(node.GetChild(i), astPatternNodeMap);
if (pattern != null)
{
return pattern;
}
}
return null;
}
public static void PatternCollectAddSubnodesAddParentNode(
EvalForgeNode evalNode,
ITree node,
IDictionary<ITree, EvalForgeNode> astPatternNodeMap)
{
if (evalNode == null)
{
throw ASTWalkException.From("Invalid null expression node for '" + ASTUtil.PrintNode(node) + "'");
}
for (int i = 0; i < node.ChildCount; i++)
{
var childNode = node.GetChild(i);
EvalForgeNode childEvalNode = PatternGetRemoveTopNode(childNode, astPatternNodeMap);
if (childEvalNode != null)
{
evalNode.AddChildNode(childEvalNode);
}
}
astPatternNodeMap.Put(node, evalNode);
}
private static void RecursiveAnalyzeChildNodes(
EvalNodeAnalysisResult evalNodeAnalysisResult,
EvalForgeNode currentNode)
{
if (currentNode is EvalFilterForgeNode ||
currentNode is EvalGuardForgeNode ||
currentNode is EvalObserverForgeNode ||
currentNode is EvalMatchUntilForgeNode ||
currentNode is EvalEveryDistinctForgeNode)
{
evalNodeAnalysisResult.AddNode(currentNode);
}
if (currentNode is EvalObserverForgeNode)
{
evalNodeAnalysisResult.AddNode(currentNode);
}
foreach (EvalForgeNode node in currentNode.ChildNodes)
{
RecursiveAnalyzeChildNodes(evalNodeAnalysisResult, node);
}
}
private static void RecursiveCompile(
EvalForgeNode evalNode,
ISet<string> eventTypeReferences,
bool isInsertInto,
MatchEventSpec tags,
Stack<EvalForgeNode> parentNodeStack,
ISet<string> allTagNamesOrdered,
int streamNum,
StatementRawInfo statementRawInfo,
StatementCompileTimeServices services)
{
parentNodeStack.Push(evalNode);
foreach (var child in evalNode.ChildNodes) {
RecursiveCompile(
child,
eventTypeReferences,
isInsertInto,
tags,
parentNodeStack,
allTagNamesOrdered,
streamNum,
statementRawInfo,
services);
}
parentNodeStack.Pop();
IDictionary<string, Pair<EventType, string>> newTaggedEventTypes = null;
IDictionary<string, Pair<EventType, string>> newArrayEventTypes = null;
if (evalNode is EvalFilterForgeNode) {
var filterNode = (EvalFilterForgeNode) evalNode;
var eventName = filterNode.RawFilterSpec.EventTypeName;
if (services.TableCompileTimeResolver.Resolve(eventName) != null) {
throw new ExprValidationException("Tables cannot be used in pattern filter atoms");
}
var resolvedEventType = ResolveTypeName(eventName, services.EventTypeCompileTimeResolver);
var finalEventType = resolvedEventType;
var optionalTag = filterNode.EventAsName;
var isPropertyEvaluation = false;
var isParentMatchUntil = IsParentMatchUntil(evalNode, parentNodeStack);
// obtain property event type, if final event type is properties
if (filterNode.RawFilterSpec.OptionalPropertyEvalSpec != null) {
var optionalPropertyEvaluator = PropertyEvaluatorForgeFactory.MakeEvaluator(
filterNode.RawFilterSpec.OptionalPropertyEvalSpec,
resolvedEventType,
filterNode.EventAsName,
statementRawInfo,
services);
finalEventType = optionalPropertyEvaluator.FragmentEventType;
isPropertyEvaluation = true;
}
// If a tag was supplied for the type, the tags must stay with this type, i.e. a=BeanA -> b=BeanA -> a=BeanB is a no
if (optionalTag != null) {
var pair = tags.TaggedEventTypes.Get(optionalTag);
EventType existingType = null;
if (pair != null) {
existingType = pair.First;
}
if (existingType == null) {
pair = tags.ArrayEventTypes.Get(optionalTag);
if (pair != null) {
throw new ExprValidationException(
"Tag '" +
optionalTag +
"' for event '" +
eventName +
"' used in the repeat-until operator cannot also appear in other filter expressions");
}
}
if (existingType != null && existingType != finalEventType) {
throw new ExprValidationException(
"Tag '" +
optionalTag +
"' for event '" +
eventName +
"' has already been declared for events of type " +
existingType.UnderlyingType.Name);
}
pair = new Pair<EventType, string>(finalEventType, eventName);
// add tagged type
if (isPropertyEvaluation || isParentMatchUntil) {
newArrayEventTypes = new LinkedHashMap<string, Pair<EventType, string>>();
newArrayEventTypes.Put(optionalTag, pair);
}
else {
newTaggedEventTypes = new LinkedHashMap<string, Pair<EventType, string>>();
newTaggedEventTypes.Put(optionalTag, pair);
}
}
// For this filter, filter types are all known tags at this time,
// and additionally stream 0 (self) is our event type.
// Stream type service allows resolution by property name event if that name appears in other tags.
// by defaulting to stream zero.
// Stream zero is always the current event type, all others follow the order of the map (stream 1 to N).
var selfStreamName = optionalTag;
if (selfStreamName == null) {
selfStreamName = "s_" + UuidGenerator.Generate();
}
var filterTypes = new LinkedHashMap<string, Pair<EventType, string>>();
var typePair = new Pair<EventType, string>(finalEventType, eventName);
filterTypes.Put(selfStreamName, typePair);
filterTypes.PutAll(tags.TaggedEventTypes);
// for the filter, specify all tags used
var filterTaggedEventTypes = new LinkedHashMap<string, Pair<EventType, string>>(tags.TaggedEventTypes);
filterTaggedEventTypes.Remove(optionalTag);
// handle array tags (match-until clause)
IDictionary<string, Pair<EventType, string>> arrayCompositeEventTypes = null;
if (tags.ArrayEventTypes != null && !tags.ArrayEventTypes.IsEmpty()) {
arrayCompositeEventTypes = new LinkedHashMap<string, Pair<EventType, string>>();
foreach (var entry in tags.ArrayEventTypes) {
var specificArrayType = new LinkedHashMap<string, Pair<EventType, string>>();
specificArrayType.Put(entry.Key, entry.Value);
var eventTypeName = services.EventTypeNameGeneratorStatement.GetAnonymousPatternNameWTag(
streamNum,
evalNode.FactoryNodeId,
entry.Key);
var mapProps = GetMapProperties(
Collections.GetEmptyMap<string, Pair<EventType, string>>(),
specificArrayType);
var metadata = new EventTypeMetadata(
eventTypeName,
statementRawInfo.ModuleName,
EventTypeTypeClass.PATTERNDERIVED,
EventTypeApplicationType.MAP,
NameAccessModifier.TRANSIENT,
EventTypeBusModifier.NONBUS,
false,
EventTypeIdPair.Unassigned());
var mapEventType = BaseNestableEventUtil.MakeMapTypeCompileTime(
metadata,
mapProps,
null,
null,
null,
null,
services.BeanEventTypeFactoryPrivate,
services.EventTypeCompileTimeResolver);
services.EventTypeCompileTimeRegistry.NewType(mapEventType);
var tag = entry.Key;
if (!filterTypes.ContainsKey(tag)) {
var pair = new Pair<EventType, string>(mapEventType, tag);
filterTypes.Put(tag, pair);
arrayCompositeEventTypes.Put(tag, pair);
}
}
}
StreamTypeService streamTypeService = new StreamTypeServiceImpl(filterTypes, true, false);
var exprNodes = filterNode.RawFilterSpec.FilterExpressions;
var spec = FilterSpecCompiler.MakeFilterSpec(
resolvedEventType,
eventName,
exprNodes,
filterNode.RawFilterSpec.OptionalPropertyEvalSpec,
filterTaggedEventTypes,
arrayCompositeEventTypes,
streamTypeService,
null,
statementRawInfo,
services);
filterNode.FilterSpec = spec;
}
else if (evalNode is EvalObserverForgeNode) {
var observerNode = (EvalObserverForgeNode) evalNode;
try {
var observerForge =
services.PatternResolutionService.Create(observerNode.PatternObserverSpec);
var streamTypeService = GetStreamTypeService(
tags.TaggedEventTypes,
tags.ArrayEventTypes,
observerNode,
streamNum,
statementRawInfo,
services);
var validationContext = new ExprValidationContextBuilder(
streamTypeService,
statementRawInfo,
services).Build();
var validated = ValidateExpressions(
ExprNodeOrigin.PATTERNOBSERVER,
observerNode.PatternObserverSpec.ObjectParameters,
validationContext);
var convertor = new MatchedEventConvertorForge(
tags.TaggedEventTypes,
tags.ArrayEventTypes,
allTagNamesOrdered);
observerNode.ObserverFactory = observerForge;
observerForge.SetObserverParameters(validated, convertor, validationContext);
}
catch (ObserverParameterException e) {
throw new ExprValidationException(
"Invalid parameter for pattern observer '" +
observerNode.ToPrecedenceFreeEPL() +
"': " +
e.Message,
e);
}
catch (PatternObjectException e) {
throw new ExprValidationException(
"Failed to resolve pattern observer '" + observerNode.ToPrecedenceFreeEPL() + "': " + e.Message,
e);
}
}
else if (evalNode is EvalGuardForgeNode) {
var guardNode = (EvalGuardForgeNode) evalNode;
try {
var guardForge = services.PatternResolutionService.Create(guardNode.PatternGuardSpec);
var streamTypeService = GetStreamTypeService(
tags.TaggedEventTypes,
tags.ArrayEventTypes,
guardNode,
streamNum,
statementRawInfo,
services);
var validationContext = new ExprValidationContextBuilder(
streamTypeService,
statementRawInfo,
services).Build();
var validated = ValidateExpressions(
ExprNodeOrigin.PATTERNGUARD,
guardNode.PatternGuardSpec.ObjectParameters,
validationContext);
var convertor = new MatchedEventConvertorForge(
tags.TaggedEventTypes,
tags.ArrayEventTypes,
allTagNamesOrdered);
guardNode.GuardForge = guardForge;
guardForge.SetGuardParameters(validated, convertor, services);
}
catch (GuardParameterException e) {
throw new ExprValidationException(
"Invalid parameter for pattern guard '" + guardNode.ToPrecedenceFreeEPL() + "': " + e.Message,
e);
}
catch (PatternObjectException e) {
throw new ExprValidationException(
"Failed to resolve pattern guard '" + guardNode.ToPrecedenceFreeEPL() + "': " + e.Message,
e);
}
}
else if (evalNode is EvalEveryDistinctForgeNode) {
var distinctNode = (EvalEveryDistinctForgeNode) evalNode;
var matchEventFromChildNodes = AnalyzeMatchEvent(distinctNode);
var streamTypeService = GetStreamTypeService(
matchEventFromChildNodes.TaggedEventTypes,
matchEventFromChildNodes.ArrayEventTypes,
distinctNode,
streamNum,
statementRawInfo,
services);
var validationContext =
new ExprValidationContextBuilder(streamTypeService, statementRawInfo, services).Build();
IList<ExprNode> validated;
try {
validated = ValidateExpressions(
ExprNodeOrigin.PATTERNEVERYDISTINCT,
distinctNode.Expressions,
validationContext);
}
catch (ExprValidationPropertyException ex) {
throw new ExprValidationPropertyException(
ex.Message +
", every-distinct requires that all properties resolve from sub-expressions to the every-distinct",
ex.InnerException);
}
var convertor = new MatchedEventConvertorForge(
matchEventFromChildNodes.TaggedEventTypes,
matchEventFromChildNodes.ArrayEventTypes,
allTagNamesOrdered);
distinctNode.Convertor = convertor;
// Determine whether some expressions are constants or time period
IList<ExprNode> distinctExpressions = new List<ExprNode>();
TimePeriodComputeForge timePeriodComputeForge = null;
ExprNode expiryTimeExp = null;
var count = -1;
var last = validated.Count - 1;
foreach (var expr in validated) {
count++;
if (count == last && expr is ExprTimePeriod) {
expiryTimeExp = expr;
var timePeriodExpr = (ExprTimePeriod) expiryTimeExp;
timePeriodComputeForge = timePeriodExpr.TimePeriodComputeForge;
}
else if (expr.Forge.ForgeConstantType.IsCompileTimeConstant) {
if (count == last) {
var value = expr.Forge.ExprEvaluator.Evaluate(null, true, null);
if (!value.IsNumber()) {
throw new ExprValidationException(
"Invalid parameter for every-distinct, expected number of seconds constant (constant not considered for distinct)");
}
var secondsExpire = expr.Forge.ExprEvaluator.Evaluate(null, true, null);
var timeExpire = secondsExpire == null
? (long?) null
: (long?) services.ImportServiceCompileTime.TimeAbacus.DeltaForSecondsNumber(
secondsExpire);
if (timeExpire != null && timeExpire > 0) {
timePeriodComputeForge = new TimePeriodComputeConstGivenDeltaForge(timeExpire.Value);
expiryTimeExp = expr;
}
else {
Log.Warn(
"Invalid seconds-expire " +
timeExpire +
" for " +
ExprNodeUtilityPrint.ToExpressionStringMinPrecedenceSafe(expr));
}
}
else {
Log.Warn(
"Every-distinct node utilizes an expression returning a constant value, please check expression '" +
ExprNodeUtilityPrint.ToExpressionStringMinPrecedenceSafe(expr) +
"', not adding expression to distinct-value expression list");
}
}
else {
distinctExpressions.Add(expr);
}
}
if (distinctExpressions.IsEmpty()) {
throw new ExprValidationException(
"Every-distinct node requires one or more distinct-value expressions that each return non-constant result values");
}
distinctNode.SetDistinctExpressions(distinctExpressions, timePeriodComputeForge, expiryTimeExp);
}
else if (evalNode is EvalMatchUntilForgeNode) {
var matchUntilNode = (EvalMatchUntilForgeNode) evalNode;
// compile bounds expressions, if any
var untilMatchEventSpec = new MatchEventSpec(tags.TaggedEventTypes, tags.ArrayEventTypes);
var streamTypeService = GetStreamTypeService(
untilMatchEventSpec.TaggedEventTypes,
untilMatchEventSpec.ArrayEventTypes,
matchUntilNode,
streamNum,
statementRawInfo,
services);
var validationContext =
new ExprValidationContextBuilder(streamTypeService, statementRawInfo, services).Build();
var lower = ValidateBounds(matchUntilNode.LowerBounds, validationContext);
matchUntilNode.LowerBounds = lower;
var upper = ValidateBounds(matchUntilNode.UpperBounds, validationContext);
matchUntilNode.UpperBounds = upper;
var single = ValidateBounds(matchUntilNode.SingleBound, validationContext);
matchUntilNode.SingleBound = single;
bool tightlyBound;
if (matchUntilNode.SingleBound != null) {
ValidateMatchUntil(matchUntilNode.SingleBound, matchUntilNode.SingleBound, false);
tightlyBound = true;
}
else {
var allowZeroLowerBounds = matchUntilNode.LowerBounds != null && matchUntilNode.UpperBounds != null;
tightlyBound = ValidateMatchUntil(
matchUntilNode.LowerBounds,
matchUntilNode.UpperBounds,
allowZeroLowerBounds);
}
if (matchUntilNode.SingleBound == null && !tightlyBound && matchUntilNode.ChildNodes.Count < 2) {
throw new ExprValidationException("Variable bounds repeat operator requires an until-expression");
}
var convertor = new MatchedEventConvertorForge(
untilMatchEventSpec.TaggedEventTypes,
untilMatchEventSpec.ArrayEventTypes,
allTagNamesOrdered);
matchUntilNode.Convertor = convertor;
// compile new tag lists
ISet<string> arrayTags = null;
var matchUntilAnalysisResult = EvalNodeUtil.RecursiveAnalyzeChildNodes(matchUntilNode.ChildNodes[0]);
foreach (var filterNode in matchUntilAnalysisResult.FilterNodes) {
var optionalTag = filterNode.EventAsName;
if (optionalTag != null) {
if (arrayTags == null) {
arrayTags = new HashSet<string>();
}
arrayTags.Add(optionalTag);
}
}
if (arrayTags != null) {
foreach (var arrayTag in arrayTags) {
if (!tags.ArrayEventTypes.ContainsKey(arrayTag)) {
tags.ArrayEventTypes.Put(arrayTag, tags.TaggedEventTypes.Get(arrayTag));
tags.TaggedEventTypes.Remove(arrayTag);
}
}
}
matchUntilNode.TagsArrayedSet = GetIndexesForTags(allTagNamesOrdered, arrayTags);
}
else if (evalNode is EvalFollowedByForgeNode) {
var followedByNode = (EvalFollowedByForgeNode) evalNode;
StreamTypeService streamTypeService = new StreamTypeServiceImpl(false);
var validationContext =
new ExprValidationContextBuilder(streamTypeService, statementRawInfo, services).Build();
if (followedByNode.OptionalMaxExpressions != null) {
IList<ExprNode> validated = new List<ExprNode>();
foreach (var maxExpr in followedByNode.OptionalMaxExpressions) {
if (maxExpr == null) {
validated.Add(null);
}
else {
var visitor = new ExprNodeSummaryVisitor();
maxExpr.Accept(visitor);
if (!visitor.IsPlain) {
var errorMessage = "Invalid maximum expression in followed-by, " +
visitor.Message +
" are not allowed within the expression";
Log.Error(errorMessage);
throw new ExprValidationException(errorMessage);
}
var validatedExpr = ExprNodeUtilityValidate.GetValidatedSubtree(
ExprNodeOrigin.FOLLOWEDBYMAX,
maxExpr,
validationContext);
validated.Add(validatedExpr);
var returnType = validatedExpr.Forge.EvaluationType;
if (returnType == null || !returnType.IsNumeric()) {
var message =
"Invalid maximum expression in followed-by, the expression must return an integer value";
throw new ExprValidationException(message);
}
}
}
followedByNode.OptionalMaxExpressions = validated;
}
}
if (newTaggedEventTypes != null) {
tags.TaggedEventTypes.PutAll(newTaggedEventTypes);
}
if (newArrayEventTypes != null) {
tags.ArrayEventTypes.PutAll(newArrayEventTypes);
}
}
/// <summary>
/// Add a node found.
/// </summary>
/// <param name="node">found</param>
public void AddNode(EvalForgeNode node)
{
activeNodes.Add(node);
}
/// <summary>
/// Adds a child node.
/// </summary>
/// <param name="childNode">is the child evaluation tree node to add</param>
public void AddChildNode(EvalForgeNode childNode)
{
ChildNodes.Add(childNode);
}
public bool Consider(EvalForgeNode node)
{
return node is EvalFilterForgeNode;
}
