hunyadi-dev commented on a change in pull request #870:
URL: https://github.com/apache/nifi-minifi-cpp/pull/870#discussion_r470048623
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File path: extensions/libarchive/MergeContent.cpp
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@@ -342,6 +352,50 @@ std::shared_ptr<core::FlowFile>
ZipMerge::merge(core::ProcessContext *context, c
return flowFile;
}
+void AttributeMerger::mergeAttributes(core::ProcessSession *session,
std::shared_ptr<core::FlowFile> &merge_flow) {
+ for (const auto& pair : getMergedAttributes()) {
+ session->putAttribute(merge_flow, pair.first, pair.second);
+ }
+}
+
+std::map<std::string, std::string> AttributeMerger::getMergedAttributes() {
+ std::map<std::string, std::string> merged_attributes;
Review comment:
Maybe `std::accumulate` could make this simpler:
```c++
if(flows_.empty()) {
return {}
}
auto merge_attributes = [&] (
const std::map<std::string, std::string>& merged_attributes,
const std::shared_ptr<core::FlowFile>& flow)
{ processFlowFile(flow, merged_attributes); }
return std::accumulate(std::next(flows_.cbegin()), flows.cend(),
flows_.begin()->getAttributes(), merge_attributes);
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