Enum ErrorKind 

#[non_exhaustive]
pub enum ErrorKind {
    UniqueViolation,
    ForeignKeyViolation,
    NotNullViolation,
    CheckViolation,
    Other,
}

The error kind.

This enum is to be used to identify frequent errors that can be handled by the program. Although it currently only supports constraint violations, the type may grow in the future.

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.

UniqueViolation

Unique/primary key constraint violation.

ForeignKeyViolation

Foreign key constraint violation.

NotNullViolation

Not-null constraint violation.

CheckViolation

Check constraint violation.

Other

An unmapped error.

Trait Implementations

impl Debug for ErrorKind

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

Formats the value using the given formatter.

impl PartialEq for ErrorKind

fn eq(&self, other: &ErrorKind) -> 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 Eq for ErrorKind

impl StructuralPartialEq for ErrorKind