import { Dataset, Literal, NamedNode, Quad, Term } from "@rdfjs/types";
import { SPARQLEndpoint, TripleStore } from "./triplestore-client.js";
import { KBChange } from "./changemgmt.js";
export declare class SparqlClient {
    readonly readEndpoint: string;
    readonly updateEndpoint: string;
    readonly options: {};
    constructor(readEndpoint: string, updateEndpoint?: string, options?: {});
    select(query: string): Promise<Array<object>>;
    update(query: string): Promise<object>;
}
export declare class SPARQLProtocolClient implements TripleStore, SPARQLEndpoint {
    readonly endpointUrl: string;
    readonly updateUrl: string;
    client: SparqlClient;
    graphs: Set<NamedNode>;
    propertyFilter: ((n: NamedNode) => Boolean);
    valueFilter: ((l: Term) => Boolean);
    private n3_format;
    jsonToTerm(x: object): Literal | NamedNode;
    constructor(endpointUrl: string, updateUrl?: string);
    withGraph(graphName: NamedNode): SPARQLProtocolClient;
    basicAuthentication(user: string, password: string): SPARQLProtocolClient;
    fetch(...subjects: Array<NamedNode | Quad>): Promise<Dataset>;
    sparqlSelect(query: {
        queryString: string;
    }): Promise<Array<object>>;
    modify(changes: KBChange[]): Promise<{
        ok: boolean;
        error?: string;
    }>;
}
export default SPARQLProtocolClient;