Exceptions

We have a lot of exceptions for different situations. They are split into different subclasses for ConnectionPool, Connection, Transaction and Cursor.

You can use them to define code behavior based on exceptions.

Exceptions dependency:

Exceptions:

RustPSQLDriverPyBaseError

Main bas exception for all errors.

RustToPyValueMappingError

Error if it is not possible to covert rust type to python.

You can get it if you database contains data type that it not supported by this library.

PyToRustValueMappingError

Error if it is not possible to covert python type to rust.

You can get this exception when executing queries with parameters. So, if there are no parameters for the query, don't handle this error.

UUIDValueConvertError

Error if it's impossible to convert py string UUID into rust UUID.

MacAddrConversionError

Error if cannot convert MacAddr string value to rust type.

BaseConnectionPoolError

Base error for all Connection Pool errors.

ConnectionPoolBuildError

Error for errors in building connection pool.

ConnectionPoolConfigurationError

Error in connection pool configuration.

ConnectionPoolExecuteError

Error in connection pool execution.

BaseConnectionError

Base error for Connection errors.

ConnectionExecuteError

Error in connection execution.

ConnectionClosedError

Error if underlying connection is closed.

BaseTransactionError

Base error for all transaction errors.

TransactionBeginError

Error in transaction begin.

TransactionCommitError

Error in transaction commit.

TransactionRollbackError

Error in transaction rollback.

TransactionSavepointError

Error in transaction savepoint.

TransactionExecuteError

Error in transaction execution.

TransactionClosedError

Error if underlying connection is closed.

BaseCursorError

Base error for Cursor errors.

CursorStartError

Error in cursor declare.

CursorCloseError

Error in cursor close.

CursorFetchError

Error in cursor fetch (any fetch).

CursorClosedError

Error if underlying connection is closed.

BaseListenerError

Base error for all Listener errors.

ListenerStartError

Error if listener start failed.

ListenerClosedError

Error if listener manipulated but it's closed

ListenerCallbackError

Error if callback passed to listener isn't a coroutine