Enum TraceError 

pub enum TraceError {
    DanglingEdge {
        edge: String,
        node: String,
    },
    UnknownAnchor(String),
    InvalidDepth,
    InconsistentPath(String),
}

Error returned while constructing or traversing a federated graph.

Variants

DanglingEdge

An edge references a missing node.

Fields

edge: String

Stable edge identifier.

node: String

Stable missing node identifier.

UnknownAnchor(String)

A requested anchor is absent.

InvalidDepth

Traversal bound is invalid.

InconsistentPath(String)

Internal parent chain was inconsistent.

Trait Implementations

impl Debug for TraceError

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

Formats the value using the given formatter.

impl Display for TraceError

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

Formats the value using the given formatter.

impl Eq for TraceError

impl Error for TraceError

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 TraceError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for TraceError