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 from plomtask.exceptions import NotFoundException
   8
   9
  10 class Condition(BaseModel):
  11     """Non Process-dependency for ProcessSteps and Todos."""
  12     table_name = 'conditions'
  13     to_save = ['is_active']
  14
  15     def __init__(self, id_: int | None, is_active: bool = False) -> None:
  16         self.set_int_id(id_)
  17         self.is_active = is_active
  18         self.title = VersionedAttribute(self, 'condition_titles', 'UNNAMED')
  19         self.description = VersionedAttribute(self, 'condition_descriptions',
  20                                               '')
  21
  22     @classmethod
  23     def from_table_row(cls, db_conn: DatabaseConnection,
  24                        row: Row | list[Any]) -> Condition:
  25         """Build condition from row, including VersionedAttributes."""
  26         condition = super().from_table_row(db_conn, row)
  27         assert isinstance(condition, Condition)
  28         for name in ('title', 'description'):
  29             table_name = f'condition_{name}s'
  30             for row_ in db_conn.row_where(table_name, 'parent', row[0]):
  31                 getattr(condition, name).history_from_row(row_)
  32         return condition
  33
  34     @classmethod
  35     def all(cls, db_conn: DatabaseConnection) -> list[Condition]:
  36         """Collect all Conditions and their VersionedAttributes."""
  37         conditions = {}
  38         for id_, condition in db_conn.cached_conditions.items():
  39             conditions[id_] = condition
  40         already_recorded = conditions.keys()
  41         for id_ in db_conn.column_all('conditions', 'id'):
  42             if id_ not in already_recorded:
  43                 condition = cls.by_id(db_conn, id_)
  44                 conditions[condition.id_] = condition
  45         return list(conditions.values())
  46
  47     @classmethod
  48     def by_id(cls, db_conn: DatabaseConnection, id_: int | None,
  49               create: bool = False) -> Condition:
  50         """Collect (or create) Condition and its VersionedAttributes."""
  51         condition = None
  52         if id_:
  53             condition, _ = super()._by_id(db_conn, id_)
  54         if not condition:
  55             if not create:
  56                 raise NotFoundException(f'Condition not found of id: {id_}')
  57             condition = cls(id_, False)
  58             condition.save(db_conn)
  59         assert isinstance(condition, Condition)
  60         return condition
  61
  62     def save(self, db_conn: DatabaseConnection) -> None:
  63         """Save self and its VersionedAttributes to DB and cache."""
  64         self.save_core(db_conn)
  65         self.title.save(db_conn)
  66         self.description.save(db_conn)
  67         assert isinstance(self.id_, int)
  68         db_conn.cached_conditions[self.id_] = self
  69
  70
  71 class ConditionsRelations:
  72     """Methods for handling relations to Conditions, for Todo and Process."""
  73
  74     def set_conditions(self, db_conn: DatabaseConnection, ids: list[int],
  75                        target: str = 'conditions') -> None:
  76         """Set self.[target] to Conditions identified by ids."""
  77         target_list = getattr(self, target)
  78         while len(target_list) > 0:
  79             target_list.pop()
  80         for id_ in ids:
  81             target_list += [Condition.by_id(db_conn, id_)]
  82
  83     def set_enables(self, db_conn: DatabaseConnection,
  84                     ids: list[int]) -> None:
  85         """Set self.enables to Conditions identified by ids."""
  86         self.set_conditions(db_conn, ids, 'enables')
  87
  88     def set_disables(self, db_conn: DatabaseConnection,
  89                      ids: list[int]) -> None:
  90         """Set self.disables to Conditions identified by ids."""
  91         self.set_conditions(db_conn, ids, 'disables')