Enum GroundTermEncodingError 

#[non_exhaustive]
pub enum GroundTermEncodingError {
    IntegerOutOfRange {
        expected: ScalarType,
        value: i64,
    },
    InvalidBooleanInteger {
        value: i64,
    },
    InvalidBooleanSymbol {
        symbol: String,
    },
    Variable {
        name: String,
    },
    Anonymous,
    Aggregate,
    TypeMismatch {
        expected: ScalarType,
        actual: Term,
    },
}

A structured failure produced while encoding a ground term for a scalar column.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

IntegerOutOfRange

An integer cannot be represented by the requested scalar type.

Fields

expected: ScalarType

Requested scalar type.

value: i64

Integer value that could not be represented.

InvalidBooleanInteger

A boolean integer was neither zero nor one.

Fields

value: i64

Integer supplied for the boolean column.

InvalidBooleanSymbol

A boolean symbol was neither true nor false.

Fields

symbol: String

Resolved symbol text supplied for the boolean column.

Variable

A fact contained a named variable instead of a ground term.

Fields

name: String

Variable name found in the fact.

Anonymous

A fact contained an anonymous wildcard instead of a ground term.

Aggregate

A fact contained an aggregate expression instead of a ground term.

TypeMismatch

The term form is not supported by the requested scalar type.

Fields

expected: ScalarType

Requested scalar type.

actual: Term

Term that did not match the requested scalar type.

Trait Implementations

impl Clone for GroundTermEncodingError

fn clone(&self) -> GroundTermEncodingError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GroundTermEncodingError

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

Formats the value using the given formatter.

impl Display for GroundTermEncodingError

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

Formats the value using the given formatter.

impl Error for GroundTermEncodingError

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 PartialEq for GroundTermEncodingError

fn eq(&self, other: &GroundTermEncodingError) -> 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 GroundTermEncodingError