hunyadi-dev commented on a change in pull request #866:
URL: https://github.com/apache/nifi-minifi-cpp/pull/866#discussion_r468365033



##########
File path: extensions/libarchive/MergeContent.cpp
##########
@@ -271,6 +281,16 @@ bool MergeContent::processBin(core::ProcessContext 
*context, core::ProcessSessio
       return false;
     }
     session->putAttribute(mergeFlow, BinFiles::FRAGMENT_COUNT_ATTRIBUTE, 
std::to_string(bin->getSize()));
+
+    std::unique_ptr<AttributeMerger> attributeMerger;
+    if (attributeStrategy_ == ATTRIBUTE_STRATEGY_KEEP_COMMON)
+      attributeMerger = std::unique_ptr < AttributeMerger > (new 
KeepOnlyCommonAttributesMerger(session, bin->getFlowFile(), mergeFlow));
+    else if (attributeStrategy_ == ATTRIBUTE_STRATEGY_KEEP_ALL_UNIQUE)
+      attributeMerger = std::unique_ptr < AttributeMerger > (new 
KeepAllUniqueAttributesMerger(session, bin->getFlowFile(), mergeFlow));

Review comment:
       Minor, but padding `<`-s from both sides makes it seem like they are 
relational operators.
   See Templates and Casts in the google styleguide we follow:
   https://google.github.io/styleguide/cppguide.html#Horizontal_Whitespace




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