szaszm commented on a change in pull request #824:
URL: https://github.com/apache/nifi-minifi-cpp/pull/824#discussion_r446195218



##########
File path: extensions/jni/jvm/JavaClass.h
##########
@@ -46,9 +46,7 @@ class JavaClass {
  public:
 
   JavaClass()
-      : class_ref_(nullptr) {
-
-  }
+      : class_ref_(nullptr) = default;

Review comment:
       This looks incorrect to me.

##########
File path: libminifi/include/core/state/UpdatePolicy.h
##########
@@ -69,9 +69,7 @@ class UpdatePolicy {
   }
 
  protected:
-  explicit UpdatePolicy(const UpdatePolicy &other)
-      : enable_all_(other.enable_all_), properties_(other.properties_) {
-  }
+  explicit UpdatePolicy(const UpdatePolicy &other) = default;

Review comment:
       Would you mind fixing the copy and move ctors by removing the `explicit` 
specifiers and making the move ctor and assignment operators take mutable 
rvalue reference? Not strictly related to your changes, but a trivial fix 
nearby.

##########
File path: extensions/jni/jvm/JniProcessContext.h
##########
@@ -39,8 +39,7 @@ struct JniProcessContext {
       : nifi_processor_(nullptr),
         cslookup_(nullptr),
         processor_(nullptr),
-        context_(nullptr) {
-  }
+        context_(nullptr) = default;

Review comment:
       This is incorrect

##########
File path: 
extensions/openwsman/processors/SourceInitiatedSubscriptionListener.cpp
##########
@@ -159,8 +159,7 @@ 
SourceInitiatedSubscriptionListener::Handler::Handler(SourceInitiatedSubscriptio
 
 SourceInitiatedSubscriptionListener::SubscriberData::SubscriberData()
     : bookmark_(nullptr)
-    , subscription_(nullptr) {
-}
+    , subscription_(nullptr) = default;

Review comment:
       This is an error

##########
File path: extensions/windows-event-log/wel/WindowsEventLog.h
##########
@@ -63,8 +63,7 @@ typedef std::vector<std::pair<METADATA, std::string>> 
METADATA_NAMES;
 class WindowsEventLogHandler
 {
 public:
-  WindowsEventLogHandler() : metadata_provider_(nullptr){
-  }
+  WindowsEventLogHandler() : metadata_provider_(nullptr) = default;

Review comment:
       This is an error

##########
File path: libminifi/include/core/state/UpdatePolicy.h
##########
@@ -122,10 +120,7 @@ class UpdatePolicyBuilder {
 
 
  protected:
-  explicit UpdatePolicyBuilder(const UpdatePolicyBuilder &other)
-      : current_policy_(other.current_policy_) {
-  }
-
+  explicit UpdatePolicyBuilder(const UpdatePolicyBuilder &other) = default;

Review comment:
       Would you mind fixing this copy ctor by removing the `explicit` 
specifier?

##########
File path: extensions/opencv/FrameIO.h
##########
@@ -30,7 +30,7 @@ class FrameWriteCallback : public OutputStreamCallback {
     // TODO - Nghia: Check std::move(img_mat).
         : image_mat_(std::move(image_mat)), image_encoding_(image_encoding_) {
     }
-    ~FrameWriteCallback() override = default;
+    ~FrameWriteCallback() = default;

Review comment:
       Please restore the `override` specifier

##########
File path: libminifi/include/core/Relationship.h
##########
@@ -78,11 +74,7 @@ class Relationship {
     return name_ < right.name_;
   }
 
-  Relationship &operator=(const Relationship &other) {
-    name_ = other.name_;
-    description_ = other.description_;
-    return *this;
-  }
+  Relationship &operator=(const Relationship &other) = default;

Review comment:
       :+1:
   
   Not only did you simplify the code, but you also handled self-assignment of 
many classes, including this one. Thanks.

##########
File path: libminifi/include/core/state/FlowIdentifier.h
##########
@@ -68,12 +68,7 @@ class FlowIdentifier {
     bucket_id_ = other.bucket_id_;
     flow_id_ = other.flow_id_;
   }
-  FlowIdentifier &operator=(const FlowIdentifier &other) {
-    registry_url_ = other.registry_url_;
-    bucket_id_ = other.bucket_id_;
-    flow_id_ = other.flow_id_;
-    return *this;
-  }
+  FlowIdentifier &operator=(const FlowIdentifier &other) = default;

Review comment:
       Please `=default` the "copy ctor" above as well and remove its 
`explicit` specifier.




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