Enum StoreError 

pub enum StoreError {
    Unavailable(String),
    Invalid(String),
    Unsupported(String),
    Backend(String),
}

An error of a read, a graph store operation or a backend outside the append protocol.

Variants

Unavailable(String)

The store cannot be reached right now (a remote endpoint is down, a file is busy). The operation may succeed when retried.

Invalid(String)

The request is malformed: an invalid entry, a quad the store cannot hold, invalid SPARQL.

Unsupported(String)

The store does not implement this operation or this kind of term.

Backend(String)

Any other failure inside the backend.

Implementations

impl StoreError

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

An StoreError::Invalid from any message.

pub fn backend(err: impl Display) -> Self

A StoreError::Backend from any error.

pub fn is_transient(&self) -> bool

True for StoreError::Unavailable: retrying later may succeed.

Trait Implementations

impl Clone for StoreError

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 StoreError

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

Formats the value using the given formatter.

impl Display for StoreError

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

Formats the value using the given formatter.

impl Eq for StoreError

impl Error for StoreError

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<StoreError> for AppendError

fn from(e: StoreError) -> Self

Converts to this type from the input type.

impl PartialEq for StoreError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for StoreError