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database.py
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database.py
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#
# database.py
#
# set up and manage a database for storing data between sessions
#
import logging
from sqlalchemy import Column, ForeignKey, Integer, String, Boolean, Table
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship, backref
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
Base = declarative_base()
user_role_table = Table('user_role', Base.metadata,
Column('user_id', Integer, ForeignKey('users.id')),
Column('role_id', Integer, ForeignKey('roles.id'))
)
class User(Base):
__tablename__ = 'users'
id = Column(Integer, primary_key=True)
name = Column(String(250), nullable=False)
roles = relationship('Role', secondary='user_role', backref='users')
squelch = Column(Boolean, nullable=False, default=False)
def __repr__(self):
return '<User:{}'.format(self.name)
class Server(Base):
__tablename__ = 'servers'
id = Column(Integer, primary_key=True)
name = Column(String(250), nullable=False)
owner_id = Column(Integer, ForeignKey('users.id'))
owner = relationship('User', backref=backref('servers', uselist=True))
def __repr__(self):
return '<Server:{}'.format(self.name)
class Role(Base):
__tablename__ = 'roles'
id = Column(Integer, primary_key=True)
server_id = Column(Integer, ForeignKey('servers.id'), primary_key=True)
name = Column(String(250), nullable=False)
squelch = Column(Boolean, nullable=False, default=False)
server = relationship('Server', backref=backref('roles', uselist=True))
def __repr__(self):
return '<Role:{}'.format(self.name)
class Channel(Base):
__tablename__ = 'channels'
id = Column(Integer, primary_key=True)
server_id = Column(Integer, ForeignKey('servers.id'), primary_key=True)
name = Column(String(250), nullable=False)
squelch = Column(Boolean, nullable=False, default=False)
server = relationship('Server', backref=backref('channels', uselist=True))
def __repr__(self):
return '<Channel:{}'.format(self.name)
class CommandClass(Base):
__tablename__ = 'command_classes'
id = Column(Integer, primary_key=True)
name = Column(String(250), nullable=False)
def __repr__(self):
return '<CommandClass:{}'.format(self.name)
class Command(Base):
__tablename__ = 'commands'
id = Column(Integer, primary_key=True)
name = Column(String(250), nullable=False)
command_class_id = Column(Integer, ForeignKey('command_classes.id'))
command_class = relationship('CommandClass', backref=backref('commands', uselist=True))
squelch = Column(Boolean, nullable=False, default=False)
def __repr__(self):
return '<Command:{}'.format(self.name)
class CommandClassAccess(Base):
__tablename__ = 'command_classes_access'
id = Column(Integer, primary_key=True)
user_id = Column(Integer, nullable=False, default=0)
role_id = Column(Integer, nullable=False, default=0)
command_class_id = Column(Integer, nullable=False, default=0)
class CommandChannelMute(Base):
__tablename__ = 'command_channel_mute'
id = Column(Integer, primary_key=True)
command_id = Column(Integer, nullable=False, default=0)
command_class_id = Column(Integer, nullable=False, default=0)
channel_id = Column(Integer, nullable=False, default=0)
def get_user_by_id(session, user_id):
return session.query(User).filter(User.id == user_id).first()
# Create an engine that stores data in the local directory's
# sqlalchemy_example.db file.
engine = create_engine('sqlite:///susumu_takuan.db')
# Create all tables in the engine. This is equivalent to "Create Table"
# statements in raw SQL.
Base.metadata.create_all(engine)
DBSession = sessionmaker(bind=engine)