Enum ScanError 

pub enum ScanError {
    ZeroDimension,
    RowDataLength {
        dimension: usize,
        actual: usize,
    },
    SchemeMismatch {
        query: QuantScheme,
        rows: QuantScheme,
    },
    FactorCount {
        expected: usize,
        actual: usize,
    },
    NonFiniteInput {
        index: usize,
    },
    NonFiniteScore {
        row_id: usize,
    },
    Quant(QuantError),
    Rescore(RescoreError),
    ArithmeticOverflow,
    WorkerPanicked,
    CpuCount(String),
    Timeout {
        partial: bool,
    },
    Cancelled {
        partial: bool,
    },
    ReadCancelled {
        partial: bool,
    },
}

Typed failure from exact scan validation or scoring.

Variants

ZeroDimension

The query dimension was zero.

RowDataLength

Row data was not an exact multiple of the query dimension.

Fields

dimension: usize

Query dimension.

actual: usize

Supplied scalar count.

SchemeMismatch

Query and row representations selected different schemes.

Fields

query: QuantScheme

Query scheme.

rows: QuantScheme

Row scheme.

FactorCount

Row-factor count differed from the encoded row count.

Fields

expected: usize

Encoded row count.

actual: usize

Supplied factor count.

NonFiniteInput

An input coordinate was NaN or infinite.

Fields

index: usize

Zero-based scalar position in the affected input.

NonFiniteScore

A computed row score was NaN or infinite.

Fields

row_id: usize

Zero-based row id.

Quant(QuantError)

A quantization scorer rejected encoded input.

Rescore(RescoreError)

Explicit candidate-rescore controls or selected rows were rejected.

ArithmeticOverflow

Candidate-window arithmetic overflowed usize.

WorkerPanicked

A persistent scan worker panicked before returning a typed result.

CpuCount(String)

The operating system could not report a usable CPU count.

Timeout

A store query deadline expired. Partial results are never returned.

Fields

partial: bool

Permanently false.

Cancelled

A caller-provided token cancelled the store query.

Fields

partial: bool

Permanently false.

ReadCancelled

Store close cancelled an already admitted query.

Fields

partial: bool

Permanently false.

Trait Implementations

impl Clone for ScanError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScanError

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

Formats the value using the given formatter.

impl Display for ScanError

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

Formats the value using the given formatter.

impl Eq for ScanError

impl Error for ScanError

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

Returns 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<QuantError> for ScanError

fn from(error: QuantError) -> Self

Converts to this type from the input type.

impl PartialEq for ScanError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ScanError