Python context.begin_transaction方法代码示例

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url, target_metadata=target_metadata, literal_binds=True
    )

    with context.begin_transaction():
        context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    connectable = engine_from_config(
        config.get_section(config.config_ini_section),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata
        )

        with context.begin_transaction():
            context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    return  # We don't support offline
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url, target_metadata=target_metadata, literal_binds=True)

    with context.begin_transaction():
        context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    db_url = os.environ['DRYDOCK_DB_URL']

    connectable = engine_from_config(
        config.get_section(config.config_ini_section),
        prefix='sqlalchemy.',
        poolclass=pool.NullPool,
        url=db_url)

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata)

        with context.begin_transaction():
            context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    connectable = engine_from_config(
        config.get_section(config.config_ini_section),
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
        connect_args={'options': f'-c search_path={_app_config.POSTGRES_SCHEMA}'}
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata
        )

        with context.begin_transaction():
            context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(url=url)

    with context.begin_transaction():
        context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    engine = engine_from_config(
                config.get_section(config.config_ini_section),
                prefix='sqlalchemy.',
                poolclass=pool.NullPool)

    connection = engine.connect()
    context.configure(
                connection=connection,
                target_metadata=target_metadata
                )

    try:
        with context.begin_transaction():
            context.run_migrations()
    finally:
        connection.close() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    conf = config.conf
    context.configure(url=conf.indexer.url,
                      target_metadata=target_metadata)

    with context.begin_transaction():
        context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    conf = config.conf
    indexer = sqlalchemy.SQLAlchemyIndexer(conf)
    with indexer.facade.writer_connection() as connectable:

        with connectable.connect() as connection:
            context.configure(
                connection=connection,
                target_metadata=target_metadata
            )

            with context.begin_transaction():
                context.run_migrations()

    indexer.disconnect()

# If `alembic' was used directly from the CLI 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    engine = sqla_api.get_engine()
    with engine.connect() as connection:
        context.configure(
            connection=connection,
            target_metadata=target_metadata,
            render_as_batch=True
        )

        with context.begin_transaction():
            context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = os.environ['HAMMER_DATABASE_URL']
    context.configure(
        url=url,
        target_metadata=target_metadata,
        literal_binds=True,
        dialect_opts={"paramstyle": "named"},
    )

    with context.begin_transaction():
        context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    configuration = config.get_section(config.config_ini_section)
    configuration['sqlalchemy.url'] = os.environ['HAMMER_DATABASE_URL']
    connectable = engine_from_config(
        configuration,
        prefix="sqlalchemy.",
        poolclass=pool.NullPool,
    )

    with connectable.connect() as connection:
        context.configure(
            connection=connection, target_metadata=target_metadata
        )

        with context.begin_transaction():
            context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_offline():
    """Run migrations in 'offline' mode.

    This configures the context with just a URL
    and not an Engine, though an Engine is acceptable
    here as well.  By skipping the Engine creation
    we don't even need a DBAPI to be available.

    Calls to context.execute() here emit the given string to the
    script output.

    """
    url = config.get_main_option("sqlalchemy.url")
    context.configure(
        url=url, target_metadata=target_metadata, literal_binds=True)

    with context.begin_transaction():
        context.run_migrations() 

# 需要导入模块: from alembic import context [as 别名]
# 或者: from alembic.context import begin_transaction [as 别名]
def run_migrations_online():
    """Run migrations in 'online' mode.

    In this scenario we need to create an Engine
    and associate a connection with the context.

    """
    connectable = engine_from_config(
        config.get_section(config.config_ini_section),
        prefix='sqlalchemy.',
        poolclass=pool.NullPool)

    with connectable.connect() as connection:
        context.configure(
            connection=connection,
            target_metadata=target_metadata
        )

        with context.begin_transaction():
            context.run_migrations()