89 lines
2.8 KiB
Python
89 lines
2.8 KiB
Python
from psycopg.rows import Row
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from .s0_base import *
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from .change_set import ChangeSet
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from .s24_coordinates import *
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import utility
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def add_junction(name: str, id: str, x: float, y: float, elevation: float) -> ChangeSet:
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sql = f"insert into junctions (id, elevation) values ('{id}', {elevation});"
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undo_sql = f'delete from junctions where id = "{id}";'
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return add_node(name, JUNCTION, id, x, y, sql, undo_sql)
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def _get_junction(name: str, id: str) -> Row | None:
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return utility.query(name, f"select elevation, demand, pattern from junctions where id = '{id}'")
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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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row = _get_junction(name, id)
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if row == None:
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return
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elevation = row['elevation']
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demand = utility.decorate(row['demand'], 'float', True)
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pattern = utility.decorate(row['pattern'], 'str', True)
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sql = f"delete from junctions where id = '{id}';"
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undo_sql = f'insert into junctions (id, elevation, demand, pattern) values ("{id}", {elevation}, {demand}, {pattern});'
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return delete_node(name, JUNCTION, id, sql, undo_sql)
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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(name: str, id: str, key: str, key_type: str, value: str, optional: bool = False) -> ChangeSet:
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if not is_junction(name, id):
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return
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row = _get_junction(name, id)
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if row == None:
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return
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return utility.update(name, JUNCTION, 'junctions', 'id', id, key, key_type, row[key], value, optional)
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def set_junction_elevation(name: str, id: str, elevation: float) -> ChangeSet:
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return _set_junction(name, id, 'elevation', 'float', str(elevation))
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def set_junction_demand(name: str, id: str, demand: float) -> ChangeSet:
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return _set_junction(name, id, 'demand', 'float', str(demand), True)
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def set_junction_pattern(name: str, id: str, pattern: str) -> ChangeSet:
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if not is_pattern(name, pattern):
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return ChangeSet()
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return _set_junction(name, id, 'pattern', 'str', pattern, True)
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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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