fgerlits commented on code in PR #1552:
URL: https://github.com/apache/nifi-minifi-cpp/pull/1552#discussion_r1172666551


##########
extensions/windows-event-log/wel/JSONUtils.cpp:
##########
@@ -135,28 +158,33 @@ rapidjson::Document toJSONImpl(const pugi::xml_node& 
root, bool flatten) {
 
   {
     auto eventData_xml = event_xml.child("EventData");
-    // create EventData subarray even if flatten requested
-    doc.AddMember("EventData", rapidjson::kArrayType, doc.GetAllocator());
-    for (const auto& data : eventData_xml.children()) {
-      auto name_attr = data.attribute("Name");
-      rapidjson::Value item(rapidjson::kObjectType);
-      item.AddMember("Name", rapidjson::StringRef(name_attr.value()), 
doc.GetAllocator());
-      item.AddMember("Content", rapidjson::StringRef(data.text().get()), 
doc.GetAllocator());
-      item.AddMember("Type", rapidjson::StringRef(data.name()), 
doc.GetAllocator());
-      // we need to query EventData because a reference to it wouldn't be 
stable, as we
-      // possibly add members to its parent which could result in reallocation
-      doc["EventData"].PushBack(item, doc.GetAllocator());
-      // check collision
-      if (flatten && !name_attr.empty() && !doc.HasMember(name_attr.value())) {
-        doc.AddMember(rapidjson::StringRef(name_attr.value()), 
rapidjson::StringRef(data.text().get()), doc.GetAllocator());
+    if (flatten) {
+      for (const auto& event_data_child : eventData_xml.children()) {
+        std::string key = "EventData";
+        if (auto name_attr = event_data_child.attribute("Name").value(); 
strlen(name_attr)) {
+          key = utils::StringUtils::join_pack(key, ".", name_attr);

Review Comment:
   would
   ```suggestion
           if (auto name_attr = event_data_child.attribute("Name"); 
!name_attr.empty()) {
             key = utils::StringUtils::join_pack(key, ".", name_attr.value());
   ```
   work?  if it does, I think that would be slightly nicer



##########
extensions/windows-event-log/wel/JSONUtils.cpp:
##########
@@ -135,28 +158,33 @@ rapidjson::Document toJSONImpl(const pugi::xml_node& 
root, bool flatten) {
 
   {
     auto eventData_xml = event_xml.child("EventData");
-    // create EventData subarray even if flatten requested
-    doc.AddMember("EventData", rapidjson::kArrayType, doc.GetAllocator());
-    for (const auto& data : eventData_xml.children()) {
-      auto name_attr = data.attribute("Name");
-      rapidjson::Value item(rapidjson::kObjectType);
-      item.AddMember("Name", rapidjson::StringRef(name_attr.value()), 
doc.GetAllocator());
-      item.AddMember("Content", rapidjson::StringRef(data.text().get()), 
doc.GetAllocator());
-      item.AddMember("Type", rapidjson::StringRef(data.name()), 
doc.GetAllocator());
-      // we need to query EventData because a reference to it wouldn't be 
stable, as we
-      // possibly add members to its parent which could result in reallocation
-      doc["EventData"].PushBack(item, doc.GetAllocator());
-      // check collision
-      if (flatten && !name_attr.empty() && !doc.HasMember(name_attr.value())) {
-        doc.AddMember(rapidjson::StringRef(name_attr.value()), 
rapidjson::StringRef(data.text().get()), doc.GetAllocator());
+    if (flatten) {
+      for (const auto& event_data_child : eventData_xml.children()) {
+        std::string key = "EventData";
+        if (auto name_attr = event_data_child.attribute("Name").value(); 
strlen(name_attr)) {
+          key = utils::StringUtils::join_pack(key, ".", name_attr);
+        }
+
+        doc.AddMember(rapidjson::Value(createUniqueKey(key, doc), 
doc.GetAllocator()).Move(), 
rapidjson::StringRef(event_data_child.text().get()), doc.GetAllocator());
+      }
+    } else {
+      auto& event_data = doc.AddMember("EventData", rapidjson::kArrayType, 
doc.GetAllocator());
+      for (const auto& event_data_child : eventData_xml.children()) {
+        auto name_attr = event_data_child.attribute("Name");
+        rapidjson::Value item(rapidjson::kObjectType);
+        item.AddMember("Name", rapidjson::StringRef(name_attr.value()), 
doc.GetAllocator());
+        item.AddMember("Content", 
rapidjson::StringRef(event_data_child.text().get()), doc.GetAllocator());
+        item.AddMember("Type", rapidjson::StringRef(event_data_child.name()), 
doc.GetAllocator());
+        doc["EventData"].PushBack(item, doc.GetAllocator());

Review Comment:
   should this be
   ```suggestion
           event_data.PushBack(item, doc.GetAllocator());
   ```
   ?



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