from typing import Any
from sqlite3 import Row
from plomtask.db import DatabaseConnection, BaseModel
-from plomtask.misc import VersionedAttribute
+from plomtask.versioned_attributes import VersionedAttribute
+from plomtask.exceptions import HandledException
class Condition(BaseModel[int]):
- """Non Process-dependency for ProcessSteps and Todos."""
+ """Non-Process dependency for ProcessSteps and Todos."""
table_name = 'conditions'
to_save = ['is_active']
+ to_save_versioned = ['title', 'description']
+ to_search = ['title.newest', 'description.newest']
def __init__(self, id_: int | None, is_active: bool = False) -> None:
super().__init__(id_)
getattr(condition, name).history_from_row(row_)
return condition
- def save(self, db_conn: DatabaseConnection) -> None:
- """Save self and its VersionedAttributes to DB and cache."""
- self.save_core(db_conn)
- self.title.save(db_conn)
- self.description.save(db_conn)
+ def remove(self, db_conn: DatabaseConnection) -> None:
+ """Remove from DB, with VersionedAttributes.
+
+ Checks for Todos and Processes that depend on Condition, prohibits
+ deletion if found.
+ """
+ if self.id_ is None:
+ raise HandledException('cannot remove unsaved item')
+ for item in ('process', 'todo'):
+ for attr in ('conditions', 'blockers', 'enables', 'disables'):
+ table_name = f'{item}_{attr}'
+ for _ in db_conn.row_where(table_name, 'condition', self.id_):
+ raise HandledException('cannot remove Condition in use')
+ super().remove(db_conn)
class ConditionsRelations:
"""Methods for handling relations to Conditions, for Todo and Process."""
+ def __init__(self) -> None:
+ self.conditions: list[Condition] = []
+ self.blockers: list[Condition] = []
+ self.enables: list[Condition] = []
+ self.disables: list[Condition] = []
+
def set_conditions(self, db_conn: DatabaseConnection, ids: list[int],
target: str = 'conditions') -> None:
"""Set self.[target] to Conditions identified by ids."""
for id_ in ids:
target_list += [Condition.by_id(db_conn, id_)]
+ def set_blockers(self, db_conn: DatabaseConnection,
+ ids: list[int]) -> None:
+ """Set self.enables to Conditions identified by ids."""
+ self.set_conditions(db_conn, ids, 'blockers')
+
def set_enables(self, db_conn: DatabaseConnection,
ids: list[int]) -> None:
"""Set self.enables to Conditions identified by ids."""