104 lines
3.7 KiB
Python
104 lines
3.7 KiB
Python
from typing import Any
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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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from .utility import *
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from .schema import *
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schema: dict[str, dict[str, Any]] = { \
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'id' : define_property(str_type, False, True), \
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'head' : define_property(float_type), \
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'pattern' : define_property(str_type, True), \
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'coord' : define_property(client_point_type), \
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'links' : define_property(str_list_type, False, True)}
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def get_reservoir_schema(name: str) -> dict[str, dict[str, Any]]:
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return schema
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def _query_reservoir(name: str, id: str) -> Row | None:
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return read(name, f"select * from reservoirs where id = '{id}'")
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def add_reservoir(name: str, id: str, x: float, y: float, head: float) -> ChangeSet:
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if is_reservoir(name, id):
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return ChangeSet()
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sql = f"insert into _node (id, type) values ('{id}', '{RESERVOIR}');"
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sql += f"\ninsert into reservoirs (id, head) values ('{id}', {head});"
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sql += f"\ninsert into coordinates (node, coord) values ('{id}', '({x}, {y})');"
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undo = f"delete from coordinates where node = ''{id}'';"
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undo += f"\ndelete from reservoirs where id = ''{id}'';"
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undo += f"\ndelete from _node where id = ''{id}'';"
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write(name, sql)
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add_operation(name, sql.replace("'", "''"), undo, 'add_reservoir', API_ADD, RESERVOIR, id)
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return get_current_change_set(name)
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def get_reservoir(name: str, id: str) -> dict[str, Any] | None:
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row = _query_reservoir(name, id)
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if row == None:
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return None
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ps: dict[str, str] = {}
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ps['id'] = id
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ps['head'] = float(row['head'])
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ps['pattern'] = row['pattern']
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ps['coord'] = get_node_coord(name, id)
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ps['links'] = get_node_links(name, id)
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return ps
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def set_reservoir(name: str, id: str, properties: dict[str, Any]) -> ChangeSet:
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if not is_reservoir(name, id):
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return ChangeSet()
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if 'pattern' in properties:
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if not is_pattern(properties['pattern']):
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return ChangeSet()
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old = Serialize(get_reservoir(name, id), schema).to_storage()
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new = get_reservoir(name, id)
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ps: list[str] = []
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for key in properties:
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if key in schema and schema[key]['readonly'] == False:
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new[key] = properties[key]
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ps.append(key)
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new = Serialize(new, schema).to_execution()
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sql = f"update reservoirs set head = {new['head']}, pattern = {new['pattern']} where id = '{id}';"
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undo = ""
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if 'coord' in ps:
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sql += f"\nupdate coordinates set coord = {new['coord']} where node = '{id}';"
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undo = f"update coordinates set coord = {old['coord']} where node = ''{id}'';"
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undo += f"\nupdate reservoirs set head = {old['head']}, pattern = {old['pattern']} where id = ''{id}'';"
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write(name, sql)
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add_operation(name, sql.replace("'", "''"), undo, 'set_reservoir', API_UPDATE, RESERVOIR, id, ps)
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return get_current_change_set(name)
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def delete_reservoir(name: str, id: str) -> ChangeSet:
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row = get_reservoir(name, id)
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if row == None:
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return ChangeSet()
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old = Serialize(get_reservoir(name, id), schema).to_storage()
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sql = f"delete from coordinates where node = '{id}';"
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sql += f"\ndelete from reservoirs where id = '{id}';"
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sql += f"\ndelete from _node where id = '{id}';"
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undo = f"insert into _node (id, type) values (''{id}'', ''{RESERVOIR}'');"
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undo += f"\ninsert into reservoirs (id, head, pattern) values (''{id}'', {old['head']}, {old['pattern']});"
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undo += f"\ninsert into coordinates (node, coord) values (''{id}'', {old['coord']});"
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write(name, sql)
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add_operation(name, sql.replace("'", "''"), undo, 'delete_reservoir', API_DELETE, RESERVOIR, id)
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return get_current_change_set(name)
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