116 lines
5.0 KiB
Python
116 lines
5.0 KiB
Python
from .database import read_all, ChangeSet, DbChangeSet, g_update_prefix, execute_command, try_read
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from typing import Any
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def get_demand_schema(name: str) -> dict[str, dict[str, Any]]:
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return { 'junction' : {'type': 'str' , 'optional': False , 'readonly': True },
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'demands' : {'type': 'list' , 'optional': False , 'readonly': False,
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'element': { 'demand' : {'type': 'float' , 'optional': False , 'readonly': False },
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'pattern' : {'type': 'str' , 'optional': True , 'readonly': False },
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'category': {'type': 'str' , 'optional': True , 'readonly': False }}}}
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def get_demand(name: str, junction: str) -> dict[str, Any]:
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des = read_all(name, f"select * from demands where junction = '{junction}' order by _order")
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ds = []
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for r in des:
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d = {}
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d['demand'] = float(r['demand'])
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d['pattern'] = str(r['pattern']) if r['pattern'] != None else None
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d['category'] = str(r['category']) if r['category'] != None else None
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ds.append(d)
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return { 'junction': junction, 'demands': ds }
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def _set_demand(name: str, cs: ChangeSet) -> DbChangeSet:
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junction = cs.operations[0]['junction']
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old = get_demand(name, junction)
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new = { 'junction': junction, 'demands': [] }
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f_junction = f"'{junction}'"
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# TODO: transaction ?
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redo_sql = f"delete from demands where junction = {f_junction};"
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for r in cs.operations[0]['demands']:
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demand = float(r['demand'])
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pattern = str(r['pattern']) if 'pattern' in r and r['pattern'] != None else None
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category = str(r['category']) if 'category' in r and r['category'] != None else None
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f_demand = demand
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f_pattern = f"'{pattern}'" if pattern is not None else 'null'
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f_category = f"'{category}'" if category is not None else 'null'
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redo_sql += f"\ninsert into demands (junction, demand, pattern, category) values ({f_junction}, {f_demand}, {f_pattern}, {f_category});"
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new['demands'].append({ 'demand': demand, 'pattern': pattern, 'category': category })
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undo_sql = f"delete from demands where junction = {f_junction};"
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for r in old['demands']:
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demand = float(r['demand'])
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pattern = str(r['pattern']) if 'pattern' in r and r['pattern'] != None else None
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category = str(r['category']) if 'category' in r and r['category'] != None else None
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f_demand = demand
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f_pattern = f"'{pattern}'" if pattern is not None else 'null'
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f_category = f"'{category}'" if category is not None else 'null'
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undo_sql += f"\ninsert into demands (junction, demand, pattern, category) values ({f_junction}, {f_demand}, {f_pattern}, {f_category});"
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redo_cs = g_update_prefix | { 'type': 'demand' } | new
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undo_cs = g_update_prefix | { 'type': 'demand' } | old
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return DbChangeSet(redo_sql, undo_sql, [redo_cs], [undo_cs])
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def set_demand(name: str, cs: ChangeSet) -> ChangeSet:
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return execute_command(name, _set_demand(name, cs))
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#--------------------------------------------------------------
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# [EPA2][EPA3][IN][OUT]
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# node base_demand (pattern) ;category
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#--------------------------------------------------------------
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def inp_in_demand(line: str) -> 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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junction = str(tokens[0])
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demand = float(tokens[1])
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pattern = str(tokens[2]) if num_without_desc >= 3 else None
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pattern = f"'{pattern}'" if pattern is not None else 'null'
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category = str(tokens[3]) if num_without_desc >= 4 else None
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category = f"'{category}'" if category is not None else 'null'
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return str(f"insert into demands (junction, demand, pattern, category) values ('{junction}', {demand}, {pattern}, {category});")
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def inp_out_demand(name: str) -> list[str]:
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lines = []
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objs = read_all(name, "select * from demands order by _order")
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for obj in objs:
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junction = obj['junction']
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demand = obj['demand']
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pattern = obj['pattern'] if obj['pattern'] is not None else ''
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category = f";{obj['category']}" if obj['category'] is not None else ';'
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lines.append(f'{junction} {demand} {pattern} {category}')
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return lines
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def delete_demand_by_junction(name: str, junction: str) -> ChangeSet:
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row = try_read(name, f"select * from demands where junction = '{junction}'")
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if row is None:
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return ChangeSet()
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return ChangeSet(g_update_prefix | {'type': 'demand', 'junction': junction, 'demands': []})
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def unset_demand_by_pattern(name: str, pattern: str) -> ChangeSet:
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cs = ChangeSet()
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rows = read_all(name, f"select distinct junction from demands where pattern = '{pattern}'")
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for row in rows:
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ds = get_demand(name, row['junction'])
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for d in ds['demands']:
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d['pattern'] = None
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cs.append(g_update_prefix | {'type': 'demand', 'junction': row['junction'], 'demands': ds['demands']})
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return cs
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