private static MatchEventSpec analyzeMatchEvent(EvalNode relativeNode) {
LinkedHashMap<String, Pair<EventType, String>> taggedEventTypes =
new LinkedHashMap<String, Pair<EventType, String>>();
LinkedHashMap<String, Pair<EventType, String>> arrayEventTypes =
new LinkedHashMap<String, Pair<EventType, String>>();
// Determine all the filter nodes used in the pattern
EvalNodeAnalysisResult evalNodeAnalysisResult =
EvalNodeUtil.recursiveAnalyzeChildNodes(relativeNode);
// collect all filters underneath
for (EvalFilterNode filterNode : evalNodeAnalysisResult.getFilterNodes()) {
String optionalTag = filterNode.getEventAsName();
if (optionalTag != null) {
taggedEventTypes.put(
optionalTag,
new Pair<EventType, String>(
filterNode.getFilterSpec().getFilterForEventType(),
filterNode.getFilterSpec().getFilterForEventTypeName()));
}
}
// collect those filters under a repeat since they are arrays
Set<String> arrayTags = new HashSet<String>();
for (EvalMatchUntilNode matchUntilNode : evalNodeAnalysisResult.getRepeatNodes()) {
EvalNodeAnalysisResult matchUntilAnalysisResult =
EvalNodeUtil.recursiveAnalyzeChildNodes(matchUntilNode.getChildNodes().get(0));
for (EvalFilterNode filterNode : matchUntilAnalysisResult.getFilterNodes()) {
String optionalTag = filterNode.getEventAsName();
if (optionalTag != null) {
arrayTags.add(optionalTag);
}
}
}
// for each array tag change collection
for (String arrayTag : arrayTags) {
if (taggedEventTypes.get(arrayTag) != null) {
arrayEventTypes.put(arrayTag, taggedEventTypes.get(arrayTag));
taggedEventTypes.remove(arrayTag);
}
}
return new MatchEventSpec(taggedEventTypes, arrayEventTypes);
}
