Enum HierarchyError 

pub enum HierarchyError {
    NotAGoal {
        item_id: String,
        actual_kind: String,
    },
    ItemNotFound(String),
    CycleDetected {
        item_id: String,
        proposed_parent: String,
    },
    Db(Error),
}

Errors that can occur in hierarchy operations.

Variants

NotAGoal

The target parent item is not of kind goal. Reparenting to non-goals is rejected.

Fields

item_id: String

actual_kind: String

ItemNotFound(String)

The requested item does not exist (or is soft-deleted).

CycleDetected

The reparenting would create a cycle (the proposed parent is a descendant of the item being moved).

Fields

item_id: String

proposed_parent: String

Db(Error)

An underlying database error.

Trait Implementations

impl Debug for HierarchyError

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

Formats the value using the given formatter.

impl Display for HierarchyError

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

Formats the value using the given formatter.

impl Error for HierarchyError

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 HierarchyError

fn from(e: Error) -> Self

Converts to this type from the input type.