Type Alias EmbedConditionalMutationResult<T>

EmbedConditionalMutationResult:
    | {
        committedGeneration: EmbedDbGenerationIdentity;
        kind: "committed";
        value: T;
    }
    | {
        kind: "generation-drift";
        observedGeneration: EmbedDbGenerationIdentity;
    }

Result of a mutation admitted against one exact EmbedDb generation.

A drift result proves that the callback performed no DML. Callers may then quarantine any derived in-memory graph before applying an authoritative database-only mutation.

Type Parameters

Type Declaration

{ committedGeneration: EmbedDbGenerationIdentity; kind: "committed"; value: T }
- ReadonlycommittedGeneration: EmbedDbGenerationIdentity
  
  Exact UUID/epoch after every trigger fired and before commit.
- Readonlykind: "committed"
  
  The expected generation still owned the write lock and committed.
- Readonlyvalue: T
  
  Mutation-specific result captured by the same transaction.
{ kind: "generation-drift"; observedGeneration: EmbedDbGenerationIdentity }
- Readonlykind: "generation-drift"
  
  Another writer advanced or replaced the physical database first.
- ReadonlyobservedGeneration: EmbedDbGenerationIdentity
  
  Current authority observed under the write lock; never graph authority.

Type Alias EmbedConditionalMutationResult<T>

Type Parameters

Type Declaration

`Readonly`committedGeneration: EmbedDbGenerationIdentity

`Readonly`kind: "committed"

`Readonly`value: T

`Readonly`kind: "generation-drift"

`Readonly`observedGeneration: EmbedDbGenerationIdentity

Settings

Type Alias EmbedConditionalMutationResult<T>

Type Parameters

Type Declaration

ReadonlycommittedGeneration: EmbedDbGenerationIdentity

Readonlykind: "committed"

Readonlyvalue: T

Readonlykind: "generation-drift"

ReadonlyobservedGeneration: EmbedDbGenerationIdentity

Settings

`Readonly`committedGeneration: EmbedDbGenerationIdentity

`Readonly`kind: "committed"

`Readonly`value: T

`Readonly`kind: "generation-drift"

`Readonly`observedGeneration: EmbedDbGenerationIdentity