jiang
fa188af0b1
Reorganize WNDB by responsibility and remove legacy scheme endpoints.\n\nRoute analysis and time-series access through project pools, preserve transactional realtime replacement, and refresh GIS materialized views after writes.\n\nAdd database architecture documentation, live pooling coverage, API contract updates, and executable container verification.\n\nBREAKING CHANGE: legacy scheme APIs and flat app.native.wndb module imports are removed.
207 lines
6.7 KiB
Python
207 lines
6.7 KiB
Python
from typing import Any
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from psycopg import sql
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from ..core.database import (
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ChangeSet,
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DatabaseCommand,
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execute_command,
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g_add_prefix,
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g_delete_prefix,
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g_update_prefix,
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read_all,
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sql_literal,
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try_read,
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)
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from ..gis.coordinates import sql_delete_coord, sql_insert_coord, sql_update_coord
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from .elements import get_all_node_links
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def get_junction_schema(name: str) -> dict[str, dict[str, Any]]:
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return { 'id' : {'type': 'str' , 'optional': False , 'readonly': True },
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'x' : {'type': 'float' , 'optional': False , 'readonly': False},
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'y' : {'type': 'float' , 'optional': False , 'readonly': False},
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'elevation' : {'type': 'float' , 'optional': False , 'readonly': False},
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'links' : {'type': 'str_list' , 'optional': False , 'readonly': True } }
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def get_junction(name: str, id: str) -> dict[str, Any]:
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j = try_read(
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name,
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"""
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SELECT n.id, j.elevation, ST_X(g.geom) AS x, ST_Y(g.geom) AS y,
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COALESCE(array_agg(l.id ORDER BY l.id)
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FILTER (WHERE l.id IS NOT NULL), '{}') AS links
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FROM network.nodes AS n
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JOIN network.junctions AS j ON j.node_id = n.id
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LEFT JOIN gis.node_geometries AS g ON g.node_id = n.id
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LEFT JOIN network.links AS l
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ON l.start_node_id = n.id OR l.end_node_id = n.id
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WHERE n.id = %s
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GROUP BY n.id, j.elevation, g.geom
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""",
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(id,),
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)
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if j == None:
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return {}
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d = {}
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d['id'] = str(j['id'])
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d['x'] = float(j['x'] or 0.0)
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d['y'] = float(j['y'] or 0.0)
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d['elevation'] = float(j['elevation'])
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d['links'] = list(j['links'])
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return d
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# DingZQ, 2025-03-29
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def get_all_junctions(name: str) -> list[dict[str, Any]]:
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rows = read_all(
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name,
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"""
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SELECT id, elevation, x, y
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FROM gis.junctions
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ORDER BY id
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""",
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)
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if rows == None:
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return []
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links_by_node = get_all_node_links(name)
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result = []
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for row in rows:
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d = {}
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id = str(row['id'])
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d['id'] = id
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d['x'] = float(row['x'] or 0.0)
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d['y'] = float(row['y'] or 0.0)
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d['elevation'] = float(row['elevation'])
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d['links'] = links_by_node.get(id, [])
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result.append(d)
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return result
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class Junction(object):
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def __init__(self, input: dict[str, Any]) -> None:
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self.type = 'junction'
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self.id = str(input['id'])
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self.x = float(input['x'])
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self.y = float(input['y'])
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self.elevation = float(input['elevation'])
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self.f_type = sql_literal(self.type)
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self.f_id = sql_literal(self.id)
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self.f_elevation = sql_literal(self.elevation)
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def as_dict(self) -> dict[str, Any]:
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return { 'type': self.type, 'id': self.id, 'x': self.x, 'y': self.y, 'elevation': self.elevation }
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def _set_junction(name: str, cs: ChangeSet) -> DatabaseCommand:
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raw_new = get_junction(name, cs.operations[0]['id'])
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new_dict = cs.operations[0]
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schema = get_junction_schema(name)
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for key, value in schema.items():
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if key in new_dict and not value['readonly']:
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raw_new[key] = new_dict[key]
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new = Junction(raw_new)
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statement = f"update network.junctions set elevation = {new.f_elevation} where node_id = {new.f_id};"
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statement += f"\n{sql_update_coord(new.id, new.x, new.y)}"
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change = g_update_prefix | new.as_dict()
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return DatabaseCommand(statement, [change])
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def set_junction(name: str, cs: ChangeSet) -> ChangeSet:
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if 'id' not in cs.operations[0]:
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return ChangeSet()
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if get_junction(name, cs.operations[0]['id']) == {}:
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return ChangeSet()
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return execute_command(name, _set_junction(name, cs))
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def _add_junction(name: str, cs: ChangeSet) -> DatabaseCommand:
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new = Junction(cs.operations[0])
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statement = f"insert into network.nodes (id, node_type) values ({new.f_id}, {new.f_type});"
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statement += f"\ninsert into network.junctions (node_id, elevation) values ({new.f_id}, {new.f_elevation});"
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statement += f"\n{sql_insert_coord(new.id, new.x, new.y)}"
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change = g_add_prefix | new.as_dict()
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return DatabaseCommand(statement, [change])
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def add_junction(name: str, cs: ChangeSet) -> ChangeSet:
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if 'id' not in cs.operations[0]:
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return ChangeSet()
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if get_junction(name, cs.operations[0]['id']) != {}:
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return ChangeSet()
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return execute_command(name, _add_junction(name, cs))
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def _delete_junction(name: str, cs: ChangeSet) -> DatabaseCommand:
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element_id = str(cs.operations[0]['id'])
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f_id = sql_literal(element_id)
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statement = sql_delete_coord(element_id)
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statement += f"\ndelete from network.nodes where id = {f_id};"
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change = g_delete_prefix | {'type': 'junction', 'id': element_id}
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return DatabaseCommand(statement, [change])
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def delete_junction(name: str, cs: ChangeSet) -> ChangeSet:
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if 'id' not in cs.operations[0]:
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return ChangeSet()
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if get_junction(name, cs.operations[0]['id']) == {}:
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return ChangeSet()
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return execute_command(name, _delete_junction(name, cs))
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#--------------------------------------------------------------
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# [EPA2]
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# [IN]
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# id elev. (demand) (demand pattern) ;desc
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# [OUT]
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# id elev. ;desc
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#--------------------------------------------------------------
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# [EPA3]
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# [IN]
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# id elev. (demand) (demand pattern)
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# [OUT]
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# id elev. * * minpressure fullpressure
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#--------------------------------------------------------------
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def inp_in_junction(line: str, demand_outside: bool) -> str:
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tokens = line.split()
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num = len(tokens)
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has_desc = tokens[-1].startswith(';')
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num_without_desc = (num - 1) if has_desc else num
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id = str(tokens[0])
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elevation = float(tokens[1])
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demand = float(tokens[2]) if num_without_desc >= 3 and tokens[2] != '*' else None
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pattern = str(tokens[3]) if num_without_desc >= 4 and tokens[3] != '*' else None
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desc = str(tokens[-1]) if has_desc else None
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sql = f"insert into network.nodes (id, node_type) values ({sql_literal(id)}, 'junction');insert into network.junctions (node_id, elevation) values ({sql_literal(id)}, {sql_literal(elevation)});"
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if demand != None and demand_outside == False:
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sql += f"insert into network.demands (junction_id, sequence_no, base_demand, pattern_id) values ({sql_literal(id)}, 0, {sql_literal(demand)}, {sql_literal(pattern)});"
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return str(sql)
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def inp_out_junction(name: str) -> list[str]:
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lines = []
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objs = read_all(name, 'select node_id as id, elevation from network.junctions order by node_id')
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for obj in objs:
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id = obj['id']
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elev = obj['elevation']
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desc = ';'
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lines.append(f'{id} {elev} {desc}')
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return lines
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