import type { IAction, IActorArgs, IActorOutput, IActorTest, Mediate } from '@comunica/core';
import { Actor } from '@comunica/core';
import type * as RDF from '@rdfjs/types';
import type { AsyncIterator } from 'asynciterator';
/**
 * A comunica actor for rdf-update-quads events.
 *
 * Actor types:
 * * Input:  IActionRdfUpdateQuads:      Quad insertion and deletion streams.
 * * Test:   <none>
 * * Output: IActorRdfUpdateQuadsOutput: A promise resolving when the update operation is done.
 *
 * @see IActionRdfUpdateQuads
 * @see IActorRdfUpdateQuadsOutput
 */
export declare abstract class ActorRdfUpdateQuads<TS = undefined> extends Actor<IActionRdfUpdateQuads, IActorTest, IActorRdfUpdateQuadsOutput, TS> {
    /**
     * @param args -
     *   \ @defaultNested {<default_bus> a <cc:components/Bus.jsonld#Bus>} bus
     *   \ @defaultNested {RDF updating failed: none of the configured actors were able to handle an update} busFailMessage
     */
    constructor(args: IActorRdfUpdateQuadsArgs<TS>);
}
export interface IActionRdfUpdateQuads extends IAction {
    /**
     * An optional stream of quads to insert.
     */
    quadStreamInsert?: AsyncIterator<RDF.Quad>;
    /**
     * An optional stream of quads to delete.
     */
    quadStreamDelete?: AsyncIterator<RDF.Quad>;
    /**
     * An optional deletion of graphs.
     */
    deleteGraphs?: {
        /**
         * The graph(s) in which all triples must be removed.
         */
        graphs: RDF.DefaultGraph | 'NAMED' | 'ALL' | RDF.NamedNode[];
        /**
         * If true, and the graph does not exist, an error must be emitted.
         *
         * Should only be considered on destinations that record empty graphs.
         */
        requireExistence: boolean;
        /**
         * If the graph itself should also be dropped.
         * Should not happen on the 'DEFAULT' graph.
         *
         * Should only be considered on destinations that record empty graphs.
         */
        dropGraphs: boolean;
    };
    /**
     * An optional creation of (empty) graphs.
     */
    createGraphs?: {
        /**
         * The graph names to create.
         */
        graphs: RDF.NamedNode[];
        /**
         * If true, an error MUST be thrown when the graph already exists.
         *
         * For destinations that do not record empty graphs,
         * this should only throw if at least one quad with the given quad already exists.
         */
        requireNonExistence: boolean;
    };
}
export interface IActorRdfUpdateQuadsOutput extends IActorOutput {
    /**
     * Async function that resolves when the update operation is done.
     */
    execute: () => Promise<void>;
}
export type IActorRdfUpdateQuadsArgs<TS = undefined> = IActorArgs<IActionRdfUpdateQuads, IActorTest, IActorRdfUpdateQuadsOutput, TS>;
export type MediatorRdfUpdateQuads = Mediate<IActionRdfUpdateQuads, IActorRdfUpdateQuadsOutput>;