'polymorphic_on': type,
'with_polymorphic': '*',
'_polymorphic_map': TopicPolymorphicMap()
}
# noinspection PyUnusedLocal
def upgrade(engine, operations_factory):
if not engine.dialect.has_table(engine.connect(), Topic.__tablename__):
return
version = get_current_version(engine)
if version == 0:
with operations_factory() as operations:
quality_column = Column('status',
String(8),
nullable=False,
server_default=Status.Ok.__str__())
operations.add_column(Topic.__tablename__, quality_column)
version = 1
def get_current_version(engine):
m = MetaData(engine)
topics = Table(Topic.__tablename__, m, autoload=True)
if 'status' not in topics.columns:
return 0
return 1
add_upgrade(upgrade)
__mapper_args__ = {
'polymorphic_identity': 'topic',
'polymorphic_on': type,
'with_polymorphic': '*',
'_polymorphic_map': TopicPolymorphicMap()
}
# noinspection PyUnusedLocal
def upgrade(engine, operations_factory):
if not engine.dialect.has_table(engine.connect(), Topic.__tablename__):
return
version = get_current_version(engine)
if version == 0:
with operations_factory() as operations:
quality_column = Column('status', String(8), nullable=False, server_default=Status.Ok.__str__())
operations.add_column(Topic.__tablename__, quality_column)
version = 1
def get_current_version(engine):
m = MetaData(engine)
topics = Table(Topic.__tablename__, m, autoload=True)
if 'status' not in topics.columns:
return 0
return 1
add_upgrade(upgrade)
def register_plugin(type, name, instance, upgrade=None):
if not upgrade:
upgrade = getattr(instance, 'upgrade', None)
if upgrade:
add_upgrade(upgrade)
plugins.setdefault(type, dict())[name] = instance
def register_plugin(type, name, instance, upgrade=None):
if not upgrade:
upgrade = getattr(instance, 'upgrade', None)
if upgrade:
add_upgrade(upgrade)
plugins.setdefault(type, dict())[name] = instance
