Struct UpdateRelation 

pub struct UpdateRelation<'a> {
    pub id: Id,
    pub from_space: Option<Id>,
    pub from_version: Option<Id>,
    pub to_space: Option<Id>,
    pub to_version: Option<Id>,
    pub position: Option<Cow<'a, str>>,
    pub unset: Vec<UnsetRelationField>,
    pub context: Option<Context>,
}

Updates a relation’s mutable fields (spec Section 3.3).

The structural fields (entity, type, from, to) are immutable. The space pins, version pins, and position can be updated or unset.

Fields

id: Id

The relation to update.

from_space: Option<Id>

Set space pin for source entity.

from_version: Option<Id>

Set version pin for source entity.

to_space: Option<Id>

Set space pin for target entity.

to_version: Option<Id>

Set version pin for target entity.

position: Option<Cow<'a, str>>

Set position for ordering.

unset: Vec<UnsetRelationField>

Fields to clear/unset.

context: Option<Context>

Optional context for grouping changes (spec Section 4.5).

Implementations

impl UpdateRelation<'_>

pub fn new(id: Id) -> Self

Creates a new UpdateRelation for the given relation ID.

pub fn is_empty(&self) -> bool

Returns true if this update has no actual changes.

Trait Implementations

impl<'a> Clone for UpdateRelation<'a>

fn clone(&self) -> UpdateRelation<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for UpdateRelation<'a>

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

Formats the value using the given formatter.

impl<'a> Default for UpdateRelation<'a>

fn default() -> UpdateRelation<'a>

Returns the “default value” for a type.

impl<'a> PartialEq for UpdateRelation<'a>

fn eq(&self, other: &UpdateRelation<'a>) -> 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<'a> StructuralPartialEq for UpdateRelation<'a>