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from sqlalchemy import \
Boolean, Column, DateTime, ForeignKey, Integer, String, Text, UniqueConstraint, \
text, func, \
create_engine, inspect, select
from sqlalchemy.engine import Engine
from sqlalchemy.orm import relationship, sessionmaker, Session, class_mapper, joinedload, aliased
from sqlalchemy.orm.attributes import get_history
from sqlalchemy.orm.query import Query
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.sql.expression import CTE
from sqlalchemy.sql.functions import ReturnTypeFromArgs
from sqlalchemy.sql.sqltypes import Numeric
from typing import Any, Optional, List, Tuple
import hra.config as config
Base = declarative_base()
metadata = Base.metadata
_engine: Optional[Engine] = None
_session: Optional[Session] = None
flask_db: Any = None
def get_engine() -> Engine:
global _engine
if _engine is None:
_engine = create_engine(config.SQLALCHEMY_DATABASE_URI, echo=config.SQLALCHEMY_ECHO)
return _engine
def get_session() -> Session:
global _session
if flask_db:
return flask_db.session
if _session is None:
MOSession = sessionmaker(bind=get_engine())
_session = MOSession()
return _session
class User(Base):
__tablename__ = 'users'
id = Column(Integer, primary_key=True)
org = Column(Boolean)
username = Column(String(80), unique=True, nullable=False)
passwd = Column(String(80), nullable=False)
def __repr__(self):
return '<User %r>' % self.username