"""Collecting Processes and Process-related items."""
from __future__ import annotations
-from typing import Any, Set
+from dataclasses import dataclass
+from typing import Set
from plomtask.db import DatabaseConnection, BaseModel
from plomtask.misc import VersionedAttribute
-from plomtask.conditions import Condition
+from plomtask.conditions import Condition, ConditionsRelations
from plomtask.exceptions import NotFoundException, BadFormatException
-class Process(BaseModel):
+@dataclass
+class ProcessStepsNode:
+ """Collects what's useful to know for ProcessSteps tree display."""
+ process: Process
+ parent_id: int | None
+ is_explicit: bool
+ steps: dict[int, ProcessStepsNode]
+ seen: bool
+
+
+class Process(BaseModel, ConditionsRelations):
"""Template for, and metadata for, Todos, and their arrangements."""
table_name = 'processes'
self.effort = VersionedAttribute(self, 'process_efforts', 1.0)
self.explicit_steps: list[ProcessStep] = []
self.conditions: list[Condition] = []
- self.fulfills: list[Condition] = []
- self.undoes: list[Condition] = []
+ self.enables: list[Condition] = []
+ self.disables: list[Condition] = []
@classmethod
def all(cls, db_conn: DatabaseConnection) -> list[Process]:
for id_, process in db_conn.cached_processes.items():
processes[id_] = process
already_recorded = processes.keys()
- for row in db_conn.exec('SELECT id FROM processes'):
- if row[0] not in already_recorded:
- process = cls.by_id(db_conn, row[0])
+ for id_ in db_conn.column_all('processes', 'id'):
+ if id_ not in already_recorded:
+ process = cls.by_id(db_conn, id_)
processes[process.id_] = process
return list(processes.values())
if not create:
raise NotFoundException(f'Process not found of id: {id_}')
process = Process(id_)
- for row in db_conn.exec('SELECT * FROM process_titles '
- 'WHERE parent = ?', (process.id_,)):
- process.title.history[row[1]] = row[2]
- for row in db_conn.exec('SELECT * FROM process_descriptions '
- 'WHERE parent = ?', (process.id_,)):
- process.description.history[row[1]] = row[2]
- for row in db_conn.exec('SELECT * FROM process_efforts '
- 'WHERE parent = ?', (process.id_,)):
- process.effort.history[row[1]] = row[2]
- for row in db_conn.exec('SELECT * FROM process_steps '
- 'WHERE owner = ?', (process.id_,)):
- process.explicit_steps += [ProcessStep.from_table_row(db_conn,
- row)]
- for row in db_conn.exec('SELECT condition FROM process_conditions '
- 'WHERE process = ?', (process.id_,)):
- process.conditions += [Condition.by_id(db_conn, row[0])]
- for row in db_conn.exec('SELECT condition FROM process_fulfills '
- 'WHERE process = ?', (process.id_,)):
- process.fulfills += [Condition.by_id(db_conn, row[0])]
- for row in db_conn.exec('SELECT condition FROM process_undoes '
- 'WHERE process = ?', (process.id_,)):
- process.undoes += [Condition.by_id(db_conn, row[0])]
+ if isinstance(process.id_, int):
+ for name in ('title', 'description', 'effort'):
+ table = f'process_{name}s'
+ for row in db_conn.row_where(table, 'parent', process.id_):
+ getattr(process, name).history_from_row(row)
+ for row in db_conn.row_where('process_steps', 'owner',
+ process.id_):
+ step = ProcessStep.from_table_row(db_conn, row)
+ process.explicit_steps += [step]
+ for name in ('conditions', 'enables', 'disables'):
+ table = f'process_{name}'
+ for cond_id in db_conn.column_where(table, 'condition',
+ 'process', process.id_):
+ target = getattr(process, name)
+ target += [Condition.by_id(db_conn, cond_id)]
assert isinstance(process, Process)
return process
def used_as_step_by(self, db_conn: DatabaseConnection) -> list[Process]:
"""Return Processes using self for a ProcessStep."""
+ if not self.id_:
+ return []
owner_ids = set()
- for owner_id in db_conn.exec('SELECT owner FROM process_steps WHERE'
- ' step_process = ?', (self.id_,)):
- owner_ids.add(owner_id[0])
+ for id_ in db_conn.column_where('process_steps', 'owner',
+ 'step_process', self.id_):
+ owner_ids.add(id_)
return [self.__class__.by_id(db_conn, id_) for id_ in owner_ids]
def get_steps(self, db_conn: DatabaseConnection, external_owner:
- Process | None = None) -> dict[int, dict[str, object]]:
+ Process | None = None) -> dict[int, ProcessStepsNode]:
"""Return tree of depended-on explicit and implicit ProcessSteps."""
- def make_node(step: ProcessStep) -> dict[str, object]:
+ def make_node(step: ProcessStep) -> ProcessStepsNode:
is_explicit = False
if external_owner is not None:
is_explicit = step.owner_id == external_owner.id_
process = self.__class__.by_id(db_conn, step.step_process_id)
step_steps = process.get_steps(db_conn, external_owner)
- return {'process': process, 'parent_id': step.parent_step_id,
- 'is_explicit': is_explicit, 'steps': step_steps}
+ return ProcessStepsNode(process, step.parent_step_id,
+ is_explicit, step_steps, False)
- def walk_steps(node_id: int, node: dict[str, Any]) -> None:
+ def walk_steps(node_id: int, node: ProcessStepsNode) -> None:
explicit_children = [s for s in self.explicit_steps
if s.parent_step_id == node_id]
for child in explicit_children:
- node['steps'][child.id_] = make_node(child)
- node['seen'] = node_id in seen_step_ids
+ assert isinstance(child.id_, int)
+ node.steps[child.id_] = make_node(child)
+ node.seen = node_id in seen_step_ids
seen_step_ids.add(node_id)
- for id_, step in node['steps'].items():
+ for id_, step in node.steps.items():
walk_steps(id_, step)
- steps: dict[int, dict[str, object]] = {}
+ steps: dict[int, ProcessStepsNode] = {}
seen_step_ids: Set[int] = set()
if external_owner is None:
external_owner = self
walk_steps(step_id, step_node)
return steps
- def set_conditions(self, db_conn: DatabaseConnection, ids: list[int],
- trgt: str = 'conditions') -> None:
- """Set self.[target] to Conditions identified by ids."""
- trgt_list = getattr(self, trgt)
- while len(trgt_list) > 0:
- trgt_list.pop()
- for id_ in ids:
- trgt_list += [Condition.by_id(db_conn, id_)]
-
- def set_fulfills(self, db_conn: DatabaseConnection,
- ids: list[int]) -> None:
- """Set self.fulfills to Conditions identified by ids."""
- self.set_conditions(db_conn, ids, 'fulfills')
-
- def set_undoes(self, db_conn: DatabaseConnection, ids: list[int]) -> None:
- """Set self.undoes to Conditions identified by ids."""
- self.set_conditions(db_conn, ids, 'undoes')
-
def _add_step(self,
db_conn: DatabaseConnection,
id_: int | None,
just deleted under its feet), or if the parent step would not be
owned by the current Process.
"""
+
def walk_steps(node: ProcessStep) -> None:
if node.step_process_id == self.id_:
raise BadFormatException('bad step selection causes recursion')
step_process = self.by_id(db_conn, node.step_process_id)
for step in step_process.explicit_steps:
walk_steps(step)
+
if parent_step_id is not None:
try:
parent_step = ProcessStep.by_id(db_conn, parent_step_id)
def set_steps(self, db_conn: DatabaseConnection,
steps: list[tuple[int | None, int, int | None]]) -> None:
"""Set self.explicit_steps in bulk."""
+ assert isinstance(self.id_, int)
for step in self.explicit_steps:
assert isinstance(step.id_, int)
del db_conn.cached_process_steps[step.id_]
self.explicit_steps = []
- db_conn.exec('DELETE FROM process_steps WHERE owner = ?',
- (self.id_,))
+ db_conn.delete_where('process_steps', 'owner', self.id_)
for step_tuple in steps:
self._add_step(db_conn, step_tuple[0],
step_tuple[1], step_tuple[2])
def save(self, db_conn: DatabaseConnection) -> None:
"""Add (or re-write) self and connected items to DB."""
self.save_core(db_conn)
+ assert isinstance(self.id_, int)
self.title.save(db_conn)
self.description.save(db_conn)
self.effort.save(db_conn)
- db_conn.exec('DELETE FROM process_conditions WHERE process = ?',
- (self.id_,))
- for condition in self.conditions:
- db_conn.exec('INSERT INTO process_conditions VALUES (?,?)',
- (self.id_, condition.id_))
- db_conn.exec('DELETE FROM process_fulfills WHERE process = ?',
- (self.id_,))
- for condition in self.fulfills:
- db_conn.exec('INSERT INTO process_fulfills VALUES (?,?)',
- (self.id_, condition.id_))
- db_conn.exec('DELETE FROM process_undoes WHERE process = ?',
- (self.id_,))
- for condition in self.undoes:
- db_conn.exec('INSERT INTO process_undoes VALUES (?,?)',
- (self.id_, condition.id_))
- assert isinstance(self.id_, int)
- db_conn.exec('DELETE FROM process_steps WHERE owner = ?',
- (self.id_,))
+ db_conn.rewrite_relations('process_conditions', 'process', self.id_,
+ [[c.id_] for c in self.conditions])
+ db_conn.rewrite_relations('process_enables', 'process', self.id_,
+ [[c.id_] for c in self.enables])
+ db_conn.rewrite_relations('process_disables', 'process', self.id_,
+ [[c.id_] for c in self.disables])
+ db_conn.delete_where('process_steps', 'owner', self.id_)
for step in self.explicit_steps:
step.save(db_conn)
db_conn.cached_processes[self.id_] = self
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