Enum MergeAssertion 

pub enum MergeAssertion {
    EntityLive {
        entity: Uuid,
    },
    EntityLineageReaches {
        entity: Uuid,
        canonical: Uuid,
    },
    NoteEdgeTo {
        note: Uuid,
        relation: EdgeRelation,
        target: Uuid,
    },
    NoteEdgeTargetsWithin {
        note: Uuid,
        relation: EdgeRelation,
        target_kind: String,
        allowed: Uuid,
    },
}

A fact the caller relied on when it planned the merge, re-checked inside the merge transaction. The first one that does not hold refuses the merge.

Variants

EntityLive

The entity exists in the caller’s namespace, is not deleted and was not merged away.

Fields

entity: Uuid

EntityLineageReaches

canonical is live in the caller’s namespace (see MergeAssertion::EntityLive), and either entity equals canonical or the walk that starts at entity and follows, in the caller’s namespace, the record each merged-away entity keeps of the entity it was merged into arrives at canonical within 64 steps. A missing record, a deleted entity with no such record, or a cycle ends the walk without holding. A canonical that was itself merged away or deleted never holds, even when the walk passes through it.

Fields

entity: Uuid

canonical: Uuid

NoteEdgeTo

A live relation edge from note to target exists in the caller’s namespace, with its target in this store.

Fields

note: Uuid

relation: EdgeRelation

target: Uuid

NoteEdgeTargetsWithin

allowed is a live entity of kind target_kind in the caller’s namespace, and every live relation edge stored under the caller’s namespace whose source is note and whose target is a live entity of kind target_kind in the caller’s namespace targets allowed. Only the caller’s namespace’s edge rows and entities are read: an edge row stored under another namespace, and an edge to any other target (a note, an event, an edge, a deleted entity, an entity of another kind, anything in another namespace or another store, or no record) does not count, so the outcome depends on no record outside the caller’s namespace.

Fields

note: Uuid

relation: EdgeRelation

target_kind: String

allowed: Uuid

Trait Implementations

impl Clone for MergeAssertion

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 MergeAssertion

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

Formats the value using the given formatter.

impl Eq for MergeAssertion

impl PartialEq for MergeAssertion

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MergeAssertion