Source code for pyqldb.session.base_qldb_session

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# Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file except in compliance with
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from abc import ABC, abstractmethod

from ..execution.executable import Executable


[docs]class BaseQldbSession(Executable, ABC): """ An abstract base class representing a session to a specific ledger within QLDB. """ def __enter__(self): """ Context Manager function to support the 'with' statement. """ return self def __exit__(self, exc_type, exc_val, exc_tb): """ Context Manager function to support the 'with' statement. """ self.close() @property @abstractmethod def ledger_name(self): """ Get the ledger name. This method must be overridden. """ pass @property @abstractmethod def session_token(self): """ Get the session token. This method must be overridden. """ pass
[docs] @abstractmethod def close(self): """ Close this QldbSession. This method must be overridden. """ pass
[docs] @abstractmethod def list_tables(self): """ Get the list of table names in the ledger. This method must be overridden. """ pass
[docs] @abstractmethod def start_transaction(self): """ Start a transaction using an available database session. This method must be overridden. """ pass