insert_query_builder progress

include/matador/object/object_proxy.hpp

@@ -33,7 +33,8 @@ public:
   object_proxy(std::weak_ptr<object_resolver<Type>> resolver, std::shared_ptr<Type> obj)
   : obj_(obj)
   , resolver_(resolver)
-  , pk_(primary_key_resolver::resolve_object(*obj).pk) {
+  , pk_(primary_key_resolver::resolve_object(*obj).pk)
+  , state_(object_state::Persistent){
   }
 
   // Transient
@@ -60,8 +61,9 @@ public:
   bool is_transient() const { return state_ == object_state::Transient; }
   bool is_detached() const { return state_ == object_state::Detached; }
   bool is_removed() const { return state_ == object_state::Removed; }
+
   void change_state(const object_state state) {
-    state_ = state;
+    state_.store(state, std::memory_order_release);
   }
 private:
   Type* resolve() const {
@@ -86,7 +88,7 @@ private:
   std::shared_ptr<Type> obj_{};
   std::weak_ptr<object_resolver<Type>> resolver_{};
   utils::identifier pk_{};
-  object_state state_{object_state::Transient};
+  std::atomic<object_state> state_{object_state::Transient};
   mutable std::mutex mutex_{};
 };
 }