Struct Relation 

pub struct Relation {
    pub id: RelationId,
    pub relation_type: Option<RelationTypeId>,
    pub labels: Vec<LabelId>,
    /* private fields */
}

An owned relation view: id, type, labels, and all properties in one read.

Performance

Cloning is O(label count + property count).

Fields

id: RelationId

Canonical relation id.

relation_type: Option<RelationTypeId>

The relation’s type, if set.

labels: Vec<LabelId>

Labels assigned to this relation, ascending.

Implementations

impl Relation

pub fn has(&self, label: LabelId) -> bool

Returns whether this relation carries label.

Performance

This method is O(log label count).

pub const fn properties(&self) -> &Properties

Returns this relation’s property bag.

Performance

This method is O(1).

Trait Implementations

impl Clone for Relation

fn clone(&self) -> Relation

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Relation

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

Formats the value using the given formatter.

impl Eq for Relation

impl PartialEq for Relation

fn eq(&self, other: &Relation) -> 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 StructuralPartialEq for Relation