Enum ProjectionError 

pub enum ProjectionError {
    TypeMismatch {
        column: usize,
        expected: DataType,
        found: &'static str,
    },
    RowWidth {
        expected: usize,
        found: usize,
    },
    NonMonotonicLsn {
        last: u64,
        next: u64,
    },
    Block(ColumnBlockError),
    Envelope(String),
    CorruptSegment(&'static str),
}

Errors from projection emit/scan. Every variant fails closed — a corrupt or unsupported input is rejected, never silently mis-decoded.

Variants

TypeMismatch

A value’s runtime type did not match the column’s declared type.

Fields

column: usize

expected: DataType

found: &'static str

RowWidth

A row’s arity did not match the schema width.

Fields

expected: usize

found: usize

NonMonotonicLsn

LSNs must be strictly increasing on the append-only log.

Fields

last: u64

next: u64

Block(ColumnBlockError)

The sealed RDCC frame failed to decode (bad magic, CRC, directory…).

Envelope(String)

The crypto page envelope failed to open (wrong key, tampering, clip).

CorruptSegment(&'static str)

A decoded column stream was ragged for its fixed-width type, or a column expected by the schema was absent from the segment.

Trait Implementations

impl Clone for ProjectionError

fn clone(&self) -> ProjectionError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProjectionError

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

Formats the value using the given formatter.

impl Display for ProjectionError

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

Formats the value using the given formatter.

impl Eq for ProjectionError

impl Error for ProjectionError

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<ColumnBlockError> for ProjectionError

fn from(e: ColumnBlockError) -> ProjectionError

Converts to this type from the input type.

impl PartialEq for ProjectionError

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for ProjectionError