104 lines
3.7 KiB
Python
104 lines
3.7 KiB
Python
from .database import *
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def get_emitter_schema(name: str) -> dict[str, dict[str, Any]]:
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return { 'junction' : {'type': 'str' , 'optional': False , 'readonly': True },
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'coefficient' : {'type': 'float' , 'optional': True , 'readonly': False} }
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def get_emitter(name: str, junction: str) -> dict[str, Any]:
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e = try_read(name, f"select * from emitters where junction = '{junction}'")
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if e == None:
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return { 'junction': junction, 'coefficient': None }
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d = {}
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d['junction'] = str(e['junction'])
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d['coefficient'] = float(e['coefficient']) if e['coefficient'] != None else None
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return d
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class Emitter(object):
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def __init__(self, input: dict[str, Any]) -> None:
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self.type = 'emitter'
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self.junction = str(input['junction'])
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self.coefficient = float(input['coefficient']) if 'coefficient' in input and input['coefficient'] != None else None
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self.f_type = f"'{self.type}'"
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self.f_junction = f"'{self.junction}'"
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self.f_coefficient = self.coefficient if self.coefficient != None else 'null'
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def as_dict(self) -> dict[str, Any]:
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return { 'type': self.type, 'junction': self.junction, 'coefficient': self.coefficient }
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def set_emitter_cmd(name: str, cs: ChangeSet) -> DbChangeSet:
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old = Emitter(get_emitter(name, cs.operations[0]['junction']))
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raw_new = get_emitter(name, cs.operations[0]['junction'])
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new_dict = cs.operations[0]
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schema = get_emitter_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 = Emitter(raw_new)
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redo_sql = f"delete from emitters where junction = {new.f_junction};"
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if new.coefficient != None:
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redo_sql += f"\ninsert into emitters (junction, coefficient) values ({new.f_junction}, {new.f_coefficient});"
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undo_sql = f"delete from emitters where junction = {old.f_junction};"
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if old.coefficient != None:
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undo_sql += f"\ninsert into emitters (junction, coefficient) values ({old.f_junction}, {old.f_coefficient});"
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redo_cs = g_update_prefix | new.as_dict()
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undo_cs = g_update_prefix | old.as_dict()
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return DbChangeSet(redo_sql, undo_sql, [redo_cs], [undo_cs])
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def set_emitter(name: str, cs: ChangeSet) -> ChangeSet:
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return execute_command(name, set_emitter_cmd(name, cs))
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#--------------------------------------------------------------
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# [EPANET2][IN][OUT]
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# node Ke
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#--------------------------------------------------------------
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class InpEmitter:
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def __init__(self, line: str) -> None:
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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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self.junction = str(tokens[0])
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self.coefficient = float(tokens[1])
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def inp_in_emitter(section: list[str]) -> ChangeSet:
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cs = ChangeSet()
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for s in section:
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# skip comment
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if s.startswith(';'):
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continue
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obj = InpEmitter(s)
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cs.append(g_update_prefix | {'type': 'emitter', 'junction': obj.junction, 'coefficient': obj.coefficient})
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return cs
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def inp_out_emitter(name: str) -> list[str]:
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lines = []
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objs = read_all(name, 'select * from emitters')
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for obj in objs:
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junction = obj['junction']
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coefficient = obj['coefficient']
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lines.append(f'{junction} {coefficient}')
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return lines
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def delete_emitter_by_junction(name: str, junction: str) -> ChangeSet:
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row = try_read(name, f"select * from emitters where junction = '{junction}'")
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if row == None:
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return ChangeSet()
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return ChangeSet(g_update_prefix | {'type' : 'emitter', 'junction': junction, 'coefficient': None})
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