A comunica Distinct Hash Query Operation Actor.

Hierarchy (View Summary)

Constructors

Properties

beforeActors: Actor<
    IActionQueryOperation,
    IActorTest,
    IQueryOperationResult,
    undefined,
>[] = []

Actor that must be registered in the bus before this actor.

bus: Bus<
    Actor<
        IActionQueryOperation,
        IActorTest,
        IQueryOperationResult,
        undefined,
    >,
    IActionQueryOperation,
    IActorTest,
    IQueryOperationResult,
    undefined,
>

The bus this actor subscribes to.

mediatorHashBindings: MediatorHashBindings
mediatorHashQuads: MediatorHashQuads
mediatorQueryOperation: MediatorQueryOperation
name: string

The name for this actor.

{<rdf:subject>}
operationName: string

Methods

  • Create a new distinct filter function. This will maintain an internal hash datastructure so that every bindings object only returns true once.

    Parameters

    • context: IActionContext

      The action context.

    • variables: Variable[]

      The variables to take into account while hashing.

    Returns Promise<(bindings: Bindings) => boolean>

    A distinct filter for bindings.