introduced table repository

include/matador/sql/record.hpp

@@ -23,6 +23,7 @@ public:
 
   record() = default;
   record(std::initializer_list<column> columns);
+  explicit record(const std::vector<column> &columns);
   record(const record&) = default;
   record& operator=(const record&) = default;
   record(record&&) noexcept = default;
@@ -44,8 +45,13 @@ public:
 
   void append(column col);
 
+  bool has_primary_key() const;
+  const column& primary_key() const;
+
+  [[nodiscard]] const std::vector<column>& columns() const;
+
   [[nodiscard]] const column& at(const std::string &name) const;
-  const column& at(size_t index) const;
+  [[nodiscard]] const column& at(size_t index) const;
 
   iterator find(const std::string &column_name);
   [[nodiscard]] const_iterator find(const std::string &column_name) const;
@@ -62,9 +68,15 @@ public:
   [[nodiscard]] bool empty() const;
   void clear();
 
+private:
+  void init();
+  void add_to_map(column &col, size_t index);
+
 private:
   column_by_index columns_;
   column_by_name_map columns_by_name_;
+
+  int pk_index_{-1};
 };
 
 }