Enum txn_core::error::TransactionError

pub enum TransactionError<C: Error, P: Error> {
    ReadOnly,
    Conflict,
    Discard,
    LargeTxn,
    Pwm(P),
    Cm(C),
}

Error type for the transaction.

Variants

ReadOnly

Returned if an update function is called on a read-only transaction.

Conflict

Returned when a transaction conflicts with another transaction. This can happen if the read rows had been updated concurrently by another transaction.

Discard

Returned if a previously discarded transaction is re-used.

LargeTxn

Returned if too many writes are fit into a single transaction.

Pwm(P)

Returned if the transaction manager error occurs.

Cm(C)

Returned if the conflict manager error occurs.

Implementations

impl<C: Error, P: Error> TransactionError<C, P>

pub const fn conflict(err: C) -> Self

Create a new error from the database error.

pub const fn pending(err: P) -> Self

Create a new error from the transaction error.

Trait Implementations

impl<C: Error, P: Error> Debug for TransactionError<C, P>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<C, P> Display for TransactionError<C, P>

where P: Display + Error, C: Display + Error,

fn fmt(&self, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<C: Error, P: Error> Error for TransactionError<C, P>

where Self: Debug + Display,

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports.

impl<C: Error, P: Error, E: Error> From<TransactionError<C, P>> for WtmError<C, P, E>

fn from(err: TransactionError<C, P>) -> Self

Converts to this type from the input type.