sequence tests progress

todo.md

@@ -1,5 +1,27 @@
 # Todo
 
+Order of next steps:
+1. Finish pk generator
+   - classes
+   - detection on schema attach
+   - tests
+2. PK accessor class
+   - extract from `insert_query_builder` class
+     - get(), set(), is_null/valid/set()
+   - detection on schema attach
+   - tests
+3. Add owner-awareness to the collection class
+   - add owner field
+   - bind owner on session insert
+   - tests
+4. Finish `insert_query_builder`
+   - collect all inserts for entities with relations
+   - tests
+5. Finish `session::insert` method
+   - use `insert_query_builder`
+   - correct handling of pk generator
+   - tests
+
 - move `prepare_*` methods from `dialect` to `query_compiler`
 - add `insert_query_builder` and `update_update_builder` (returning multiple statements)
 - finish fetch eager many-to-many relations
@@ -18,32 +40,6 @@
 7. Extend `session::insert` logic to use pk generator
 8. Add generator to `schema_node` or `table` class when attaching type
 
-```cpp
-struct abstract_pk_generator {
-  virtual ~abstract_pk_generator() = default;
-  virtual int64_t next_id() = 0;
-  virtual std::vector<int64_t> next_ids(int count) = 0;
-};
-
-struct sequence_pk_generator : abstract_pk_generator {
-  explicit sequence_pk_generator(const std::string& sequence_name)
-  : query_(query::query::select().nextval(sequence_name)) {}
-  int64_t next_id(sql::executor& exec) override {
-    return query_.fetch_value<int64_t>(exec);
-  }
-  std::vector<int64_t> next_ids(int count) override;
-private:
-  query::fetchable_query query_;
-};
-
-struct table_pk_generator : abstract_pk_generator {
-  explicit table_pk_generator(const std::string& table_name);
-  int64_t next_id() override;
-  std::vector<int64_t> next_ids(int count) override;
-private:
-  std::string table_name_;
-};
-```
 
 __Proposal for polymorphic classes:__