Struct EntityTreeSnapshot 

pub struct EntityTreeSnapshot {
    pub store_snapshot: Option<StoreSnapshot>,
    pub root_ids: Vec<EntityId>,
}

Snapshot of an entity tree for undo.

Capture is O(1): store_snapshot is a whole-store im::HashMap clone (structural sharing). Restore is scoped: root_ids records the subtree roots passed to snapshot(ids), and the per-entity Repository::restore walks that subtree (in both the snapshot and the live store) and reconciles only it, leaving other trunks untouched.

Fields

store_snapshot: Option<StoreSnapshot>

Whole-store snapshot captured at snapshot(ids) time (O(1) im clone).

root_ids: Vec<EntityId>

The subtree roots (the ids passed to snapshot). Restore is scoped to these.

Trait Implementations

impl Clone for EntityTreeSnapshot

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EntityTreeSnapshot

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

Formats the value using the given formatter.

impl Default for EntityTreeSnapshot

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for EntityTreeSnapshot

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for EntityTreeSnapshot

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.