plomlompom.com Git - plomtask/blob - plomtask/conditions.py

   1 """Non-doable elements of ProcessStep/Todo chains."""
   2 from __future__ import annotations
   3 from typing import Any
   4 from sqlite3 import Row
   5 from plomtask.db import DatabaseConnection, BaseModel
   6 from plomtask.misc import VersionedAttribute
   7
   8
   9 class Condition(BaseModel[int]):
  10     """Non-Process dependency for ProcessSteps and Todos."""
  11     table_name = 'conditions'
  12     to_save = ['is_active']
  13
  14     def __init__(self, id_: int | None, is_active: bool = False) -> None:
  15         super().__init__(id_)
  16         self.is_active = is_active
  17         self.title = VersionedAttribute(self, 'condition_titles', 'UNNAMED')
  18         self.description = VersionedAttribute(self, 'condition_descriptions',
  19                                               '')
  20
  21     @classmethod
  22     def from_table_row(cls, db_conn: DatabaseConnection,
  23                        row: Row | list[Any]) -> Condition:
  24         """Build condition from row, including VersionedAttributes."""
  25         condition = super().from_table_row(db_conn, row)
  26         for name in ('title', 'description'):
  27             table_name = f'condition_{name}s'
  28             for row_ in db_conn.row_where(table_name, 'parent', row[0]):
  29                 getattr(condition, name).history_from_row(row_)
  30         return condition
  31
  32     def save(self, db_conn: DatabaseConnection) -> None:
  33         """Save self and its VersionedAttributes to DB and cache."""
  34         self.save_core(db_conn)
  35         self.title.save(db_conn)
  36         self.description.save(db_conn)
  37
  38
  39 class ConditionsRelations:
  40     """Methods for handling relations to Conditions, for Todo and Process."""
  41
  42     def set_conditions(self, db_conn: DatabaseConnection, ids: list[int],
  43                        target: str = 'conditions') -> None:
  44         """Set self.[target] to Conditions identified by ids."""
  45         target_list = getattr(self, target)
  46         while len(target_list) > 0:
  47             target_list.pop()
  48         for id_ in ids:
  49             target_list += [Condition.by_id(db_conn, id_)]
  50
  51     def set_enables(self, db_conn: DatabaseConnection,
  52                     ids: list[int]) -> None:
  53         """Set self.enables to Conditions identified by ids."""
  54         self.set_conditions(db_conn, ids, 'enables')
  55
  56     def set_disables(self, db_conn: DatabaseConnection,
  57                      ids: list[int]) -> None:
  58         """Set self.disables to Conditions identified by ids."""
  59         self.set_conditions(db_conn, ids, 'disables')