Enum scylla::transport::legacy_query_result::FirstRowError

pub enum FirstRowError {
    RowsExpected(RowsExpectedError),
    RowsEmpty,
}

Variants

RowsExpected(RowsExpectedError)

LegacyQueryResult::first_row() called on a bad LegacyQueryResult.
Expected LegacyQueryResult.rows to be Some, but it was None.
LegacyQueryResult.rows is Some for queries that can return rows (e.g SELECT).
It is None for queries that can’t return rows (e.g INSERT).

RowsEmpty

Rows in LegacyQueryResult are empty

Trait Implementations

impl Clone for FirstRowError

fn clone(&self) -> FirstRowError

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FirstRowError

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

Formats the value using the given formatter.

impl Display for FirstRowError

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

Formats the value using the given formatter.

impl Error for FirstRowError

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 From<FirstRowError> for FirstRowTypedError

fn from(err: FirstRowError) -> FirstRowTypedError

Converts to this type from the input type.

impl From<RowsExpectedError> for FirstRowError

fn from(source: RowsExpectedError) -> Self

Converts to this type from the input type.

impl PartialEq for FirstRowError

fn eq(&self, other: &FirstRowError) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for FirstRowError

impl StructuralPartialEq for FirstRowError