Enum TopologyError

pub enum TopologyError {
    DuplicateNode(Box<ObjectId>),
    UnknownEndpoint(Box<ObjectId>),
    UnknownNode(Box<ObjectId>),
    InexactConnection,
    SelfConnection(Box<ObjectId>),
    InvalidWidth(String),
    DuplicateConnection {
        left: Box<ObjectId>,
        right: Box<ObjectId>,
    },
    BlankEvidenceLocator,
    InexactTopologyCoverage,
}

A fail-closed topology construction or query error.

Variants

DuplicateNode(Box<ObjectId>)

The declared node universe contains the same source-qualified identity twice.

UnknownEndpoint(Box<ObjectId>)

A connection references an object outside the declared node universe.

UnknownNode(Box<ObjectId>)

A query references an object outside the declared node universe.

InexactConnection

A connection was asserted without exact adapter evidence.

SelfConnection(Box<ObjectId>)

A connection joins an object to itself.

InvalidWidth(String)

A clear width or query threshold was non-finite or negative.

DuplicateConnection

The same undirected connection was supplied more than once.

Fields

left: Box<ObjectId>

right: Box<ObjectId>

BlankEvidenceLocator

Exact evidence did not carry a usable provenance locator.

InexactTopologyCoverage

The adapter could not prove the declared topology universe complete.

Trait Implementations

impl Clone for TopologyError

fn clone(&self) -> TopologyError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for TopologyError

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

Formats the value using the given formatter.

impl Display for TopologyError

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

Formats the value using the given formatter.

impl Error for TopologyError

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 TopologyError

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

impl StructuralPartialEq for TopologyError