Enum Error 

pub enum Error {
    NotFound,
    AlreadyExists,
    Conflict,
    InvalidArgument(String),
    InvalidIdentifier(Error),
    Generic(String),
    SerDe(Error),
}

Errors returned by the resource store and association store.

Store operations report failures through these variants; the doc comments on the ObjectStore and AssociationStore trait methods note which variant a given method returns and when.

Variants

NotFound

AlreadyExists

Conflict

InvalidArgument(String)

InvalidIdentifier(Error)

Generic(String)

SerDe(Error)

Implementations

impl Error

pub fn generic(msg: impl Into<String>) -> Self

Constructs an Error::Generic from a message.

Use this for failures that do not map onto a more specific variant.

pub fn invalid_argument(msg: impl Into<String>) -> Self

Constructs an Error::InvalidArgument from a message.

Use this when a caller-supplied argument is malformed or out of range.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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<Error> for Error

Available on crate features postgres or sqlite only.

Map an sqlx::Error onto the store’s Error, collapsing the two cases the store gives dedicated variants (RowNotFound → Error::NotFound, a unique violation → Error::AlreadyExists) and treating everything else as a generic backend error. Dialect-independent: is_unique_violation() is honored by every sqlx driver.

fn from(e: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.