97 lines
3.4 KiB
Python
97 lines
3.4 KiB
Python
from .operation import *
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from .s0_base import *
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MIXING_MODEL_MIXED = 'MIXED'
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MIXING_MODEL_2COMP = '2COMP'
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MIXING_MODEL_FIFO = 'FIFO'
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MIXING_MODEL_LIFO = 'LIFO'
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def get_mixing_schema(name: str) -> dict[str, dict[str, Any]]:
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return { 'tank' : {'type': 'str' , 'optional': False , 'readonly': True },
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'model' : {'type': 'str' , 'optional': False , 'readonly': False},
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'value' : {'type': 'float' , 'optional': True , 'readonly': False} }
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def get_mixing(name: str, tank: str) -> dict[str, Any]:
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m = read(name, f"select * from mixing where tank = '{tank}'")
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d = {}
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d['tank'] = str(m['tank'])
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d['model'] = str(m['model'])
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d['value'] = float(m['value']) if m['value'] != None else None
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return d
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class Mixing(object):
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def __init__(self, input: dict[str, Any]) -> None:
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self.type = 'mixing'
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self.tank = str(input['tank'])
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self.model = str(input['model'])
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self.value = float(input['value']) if 'value' in input and input['value'] != None else None
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self.f_type = f"'{self.type}'"
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self.f_tank = f"'{self.tank}'"
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self.f_model = f"'{self.model}'"
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self.f_value = self.value if self.value != None else 'null'
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def as_dict(self) -> dict[str, Any]:
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return { 'type': self.type, 'tank': self.tank, 'model': self.model, 'value': self.value }
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def as_id_dict(self) -> dict[str, Any]:
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return { 'type': self.type, 'tank': self.tank }
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def set_mixing_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
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old = Mixing(get_mixing(name, cs.operations[0]['tank']))
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raw_new = get_mixing(name, cs.operations[0]['tank'])
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new_dict = cs.operations[0]
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schema = get_mixing_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 = Mixing(raw_new)
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redo_sql = f"update mixing set model = {new.f_model}, value = {new.f_value} where tank = {new.f_tank};"
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undo_sql = f"update mixing set model = {old.f_model}, value = {old.f_value} where tank = {old.f_tank};"
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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 SqlChangeSet(redo_sql, undo_sql, redo_cs, undo_cs)
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def set_mixing(name: str, cs: ChangeSet) -> ChangeSet:
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return execute_command(name, set_mixing_cache(name, cs))
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def add_mixing_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
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new = Mixing(cs.operations[0])
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redo_sql = f"insert into mixing (tank, model, value) values ({new.f_tank}, {new.f_model}, {new.f_value});"
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undo_sql = f"delete from mixing where tank = {new.f_tank};"
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redo_cs = g_add_prefix | new.as_dict()
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undo_cs = g_delete_prefix | new.as_id_dict()
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return SqlChangeSet(redo_sql, undo_sql, redo_cs, undo_cs)
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def add_mixing(name: str, cs: ChangeSet) -> ChangeSet:
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return execute_command(name, add_mixing_cache(name, cs))
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def delete_mixing_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
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old = Mixing(get_mixing(name, cs.operations[0]['tank']))
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redo_sql = f"delete from mixing where tank = {old.f_tank};"
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undo_sql = f"insert into mixing (tank, model, value) values ({old.f_tank}, {old.f_model}, {old.f_value});"
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redo_cs = g_delete_prefix | old.as_id_dict()
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undo_cs = g_add_prefix | old.as_dict()
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return SqlChangeSet(redo_sql, undo_sql, redo_cs, undo_cs)
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def delete_mixing(name: str, cs: ChangeSet) -> ChangeSet:
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return execute_command(name, delete_mixing_cache(name, cs))
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