updated todo.md

todo.md

@@ -1,58 +1,12 @@
 # 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
-    - cascade_type: `Insert` 
-    - has_many <-> belongs_to: set root id into the join column of elements
-    - belongs_to <-> has_many: ?
-    - belongs_to <-> has_one: set root id into the foreign object
-    - has_one <-> belongs_to: set root id into the foreign object
-    - has_many_to_many: insert relation table entry
-
-if generator type `manual` => extract pk before insert
- => 
-if generator type `sequence` or `table` => generate pk before insert
-if generator type `identity` => extract pk after insert and before insert of relation objects
-
-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)
+- add `update_update_builder` (returning multiple statements)
-- finish fetch eager many-to-many relations
+- add `delete_update_builder` (returning multiple statements)
-- implement lazy loading
 - implement polymorphic class hierarchies
 - finish `database` (schema_repository) class (move add/drop from `session` to `schema`)
 - implement a flag class for enumerations
 
-- PK generator
-1. Introduce execute_result
-2. Add `abstract_pk_generator` class
-3. Add `identity_pk_generator` class
-4. Add `sequence_pk_generator` class
-5. Add `table_pk_generator` class
-6. Add `manual_pk_generator` class 
-7. Extend `session::insert` logic to use pk generator
-8. Add generator to `schema_node` or `table` class when attaching type
-
-
 __Proposal for polymorphic classes:__
 
 object_ptr::as<Type> does the following checks;