builder progress (attribute, object and constraint class in todo.md)

include/matador/object/attribute.hpp

@@ -93,6 +93,23 @@ private:
   std::shared_ptr<attribute> reference_column_;
 };
 
+
+class object {
+public:
+    using iterator = std::vector<attribute>::iterator;
+    using const_iterator = std::vector<attribute>::const_iterator;
+
+private:
+    std::vector<attribute> columns_;
+    std::string name_;
+    std::string alias_;
+};
+
+class constraint {
+public:
+private:
+    std::shared_ptr<attribute> column_;
+};
 /**
  * User defined literal to have a shortcut creating a column object
  * @param name Name of the column

include/matador/object/internal/shadow_repository.hpp

@@ -18,9 +18,9 @@ private:
   using node_ptr = std::shared_ptr<repository_node>;
 
 public:
-  explicit shadow_repository(object::repository& s);
+  explicit shadow_repository(repository& s);
 
-  [[nodiscard]] object::repository& repo() const;
+  [[nodiscard]] repository& repo() const;
   [[nodiscard]] bool contains(const std::type_index& ti) const;
   [[nodiscard]] utils::result<node_ptr, utils::error> find_node(const std::type_index &type_index) const;
   [[nodiscard]] utils::result<node_ptr, utils::error> find_node(const std::string &name) const;
@@ -28,7 +28,7 @@ public:
   [[nodiscard]] utils::result<void, utils::error> detach_node(const std::shared_ptr<repository_node> &node) const;
 
 private:
-  object::repository& schema_;
+  repository& repo_;
 };
 }
 #endif //SHADOW_SCHEMA_HPP

include/matador/object/repository_node.hpp

@@ -18,7 +18,7 @@ public:
 
   template < typename Type >
   static std::shared_ptr<repository_node> make_node(repository& repo, const std::string& name) {
-    auto node = std::shared_ptr<repository_node>(new repository_node(repo, name, typeid(Type)));
+    auto node = std::make_shared<repository_node>( repo, name, typeid( Type ) );
 
     primary_key_resolver resolver;
     auto pk_info = resolver.resolve<Type>();
@@ -74,7 +74,7 @@ public:
   void update_name(const std::string& name);
 
   template <typename Type>
-  object_info_ref<Type> info() const {
+  [[nodiscard]] object_info_ref<Type> info() const {
       return std::ref(static_cast<const object_info<Type>&>(*info_));
   }