Method _operation_context

lib/sqlalchemy/engine/reflection.py:321–339

Return a context that optimizes for multiple operations on a single transaction. This essentially allows connect()/close() to be called if we detected that we're against an :class:`_engine.Engine` and not a :class:`_engine.Connection`.

(self)

    @contextlib.contextmanager
    def _operation_context(self) -> Generator[Connection, None, None]:
        """Return a context that optimizes for multiple operations on a single
        transaction.

        This essentially allows connect()/close() to be called if we detected
        that we're against an :class:`_engine.Engine` and not a
        :class:`_engine.Connection`.

        """
        conn: Connection
        if self._op_context_requires_connect:
            conn = self.bind.connect()  # type: ignore[union-attr]
        else:
            conn = self.bind  # type: ignore[assignment]
        try:
            yield conn
        finally:
            if self._op_context_requires_connect:
                conn.close()

    @contextlib.contextmanager
    def _inspection_context(self) -> Generator[Inspector, None, None]: