165 lines
5.2 KiB
Python
165 lines
5.2 KiB
Python
from psycopg.rows import dict_row, Row
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from .connection import g_conn_dict as conn
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from .s0_base import *
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from .operation import *
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from .change_set import ChangeSet
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from .s24_coordinates import *
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def add_junction(name: str, id: str, x: float, y: float, elevation: float) -> ChangeSet:
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if is_node(name, id):
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return
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with conn[name].cursor() as cur:
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sql = f"insert into _node (id, type) values ('{id}', 'JUNCTION');"
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sql += f" insert into junctions (id, elevation) values ('{id}', {elevation});"
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sql += f" insert into coordinates (node, coord) values ('{id}', '({x}, {y})');"
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cur.execute(sql)
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redo = sql.replace("'", '"')
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undo = f'delete from coordinates where node = "{id}";'
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undo += f' delete from junctions where id = "{id}";'
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undo += f' delete from _node where id = "{id}";'
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add_operation(name, redo, undo)
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change = ChangeSet()
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change.add('junction', id)
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return change
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def delete_junction(name: str, id: str) -> ChangeSet:
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if not is_junction(name, id):
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return
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with conn[name].cursor(row_factory=dict_row) as cur:
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cur.execute(f"select * from junctions where id = '{id}'")
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row = cur.fetchone()
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if row == None:
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return
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elevation = row['elevation']
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demand = 'NULL' if row['demand'] == None else row['demand']
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pattern = 'NULL' if row['pattern'] == None else row['pattern']
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pattern = f'"{pattern}"' if pattern != 'NULL' else pattern
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cur.execute(f"select * from coordinates where node = '{id}'")
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row = cur.fetchone()
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if row == None:
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return
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coord = row['coord']
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sql = f"delete from coordinates where node = '{id}';"
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sql += f" delete from junctions where id = '{id}';"
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sql += f" delete from _node where id = '{id}';"
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cur.execute(sql)
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redo = sql.replace("'", '"')
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undo = f'insert into _node (id, type) values ("{id}", "JUNCTION");'
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undo += f' insert into junctions (id, elevation, demand, pattern) values ("{id}", {elevation}, {demand}, {pattern});'
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undo += f' insert into coordinates (node, coord) values ("{id}", "{coord}");'
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add_operation(name, redo, undo)
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change = ChangeSet()
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change.delete('junction', id)
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return change
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def _get_junction(name: str, id: str) -> Row | None:
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with conn[name].cursor(row_factory=dict_row) as cur:
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cur.execute(f"select elevation, demand, pattern from junctions where id = '{id}'")
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return cur.fetchone()
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def get_junction_elevation(name: str, id: str) -> float | None:
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row = _get_junction(name, id)
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return float(row['elevation']) if row != None else None
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def get_junction_demand(name: str, id: str) -> float | str | None:
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row = _get_junction(name, id)
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if row != None:
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return float(row['demand']) if row['demand'] != None else 'NULL'
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else:
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return None
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def get_junction_pattern(name: str, id: str) -> str | None:
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row = _get_junction(name, id)
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if row != None:
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return row['pattern'] if row['pattern'] != None else 'NULL'
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else:
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return None
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def get_junction_coord(name: str, id: str) -> dict[str, float] | None:
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return get_node_coord(name, id)
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def set_junction_elevation(name: str, id: str, elevation: float) -> ChangeSet:
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if not is_junction(name, id):
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return
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old = get_junction_elevation(name, id)
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if old == None:
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return
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with conn[name].cursor() as cur:
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sql = f"update junctions set elevation = {elevation} where id = '{id}'"
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cur.execute(sql)
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redo = sql.replace("'", '"')
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undo = f'update junctions set elevation = {old} where id = "{id}"'
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add_operation(name, redo, undo)
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change = ChangeSet()
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change.update('junction', id, 'elevation', 'float', str(elevation))
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return change
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def set_junction_demand(name: str, id: str, demand: float) -> ChangeSet:
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if not is_junction(name, id):
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return
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old = get_junction_demand(name, id)
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if old == None:
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return
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with conn[name].cursor() as cur:
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sql = f"update junctions set demand = {demand} where id = '{id}'"
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cur.execute(sql)
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redo = sql.replace("'", '"')
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undo = f'update junctions set demand = {old} where id = "{id}"'
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add_operation(name, redo, undo)
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change = ChangeSet()
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change.update('junction', id, 'demand', 'float', str(demand))
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return change
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def set_junction_pattern(name: str, id: str, pattern: str) -> ChangeSet:
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if not is_junction(name, id):
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return
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if not is_pattern(name, id):
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return
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old = get_junction_pattern(name, id)
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if old == None:
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return
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old = f'"{old}"' if old != 'NULL' else old
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with conn[name].cursor() as cur:
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sql = f"update junctions set pattern = '{pattern}' where id = '{id}'"
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cur.execute(sql)
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redo = sql.replace("'", '"')
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undo = f'update junctions set pattern = {old} where id = "{id}"'
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add_operation(name, redo, undo)
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change = ChangeSet()
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change.update('junction', id, 'pattern', 'str', str(pattern))
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return change
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def set_junction_coord(name: str, id: str, x: float, y: float) -> ChangeSet:
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return set_node_coord(name, id, x, y)
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