Struct Bound 

pub struct Bound { /* private fields */ }

Resolved name→id handles for an applied Schema.

The single place names resolve to ids; replaces hand-threaded *Id maps. Typed getters return Key<T>/EqualityIndex<T> (the value type is checked against the declaration); a missing name is a DbError::UnknownName.

Performance

Cloning is O(handle count); every getter is O(log n + name length).

Implementations

impl Bound

pub fn role(&self, name: &str) -> Result<RoleId, DbError>

Resolves a role handle.

Errors

DbError::UnknownName when the role was not declared/bound.

Performance

This method is O(log n + name length).

pub fn label(&self, name: &str) -> Result<LabelId, DbError>

Resolves a label handle.

Errors

DbError::UnknownName when the label was not declared/bound.

Performance

This method is O(log n + name length).

pub fn relation_type(&self, name: &str) -> Result<RelationTypeId, DbError>

Resolves a relation-type handle.

Errors

DbError::UnknownName when the relation type was not declared/bound.

Performance

This method is O(log n + name length).

pub fn key<T: ValueType>(&self, name: &str) -> Result<Key<T>, DbError>

Resolves a typed property-key handle, checking the value type matches T.

Errors

DbError::UnknownName when absent, or DbError::SchemaConflict when the declared value type differs from T.

Performance

This method is O(log n + name length).

pub fn equality_index<T: ValueType>( &self, name: &str, ) -> Result<EqualityIndex<T>, DbError>

Resolves a typed equality-index handle, checking the indexed key’s value type matches T.

Errors

DbError::UnknownName when absent, or DbError::SchemaConflict on a value-type mismatch.

Performance

This method is O(log n + name length).

pub fn projection(&self, name: &str) -> Result<ProjectionId, DbError>

Resolves a projection handle.

Errors

DbError::UnknownName when the projection was not declared/bound.

Performance

This method is O(log n + name length).

Trait Implementations

impl Clone for Bound

fn clone(&self) -> Bound

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Bound

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

Formats the value using the given formatter.

impl Default for Bound

fn default() -> Bound

Returns the “default value” for a type.