import { Dataset, ReadonlyDataset } from "@opennetwork/rdf-dataset";
import { NamedNode, Quad, QuadObject, QuadPredicate, QuadSubject } from "@opennetwork/rdf-data-model";
import { Link } from "./link";
import { Object as ObjectInstance } from "./object";
export interface CreateInstance {
    link(dataset: Dataset, subject: NamedNode): Link;
    object(dataset: Dataset, subject: NamedNode): ObjectInstance;
}
export declare const dataset: unique symbol;
export declare const subject: unique symbol;
export declare const create: unique symbol;
export declare class Instance extends ReadonlyDataset {
    readonly [dataset]: Dataset;
    readonly [subject]: QuadSubject;
    readonly [create]: Readonly<CreateInstance>;
    constructor(givenDataset: Dataset, givenSubject: QuadSubject, givenCreate: CreateInstance);
    protected next(predicate: QuadPredicate): Quad | undefined;
    protected nextThing(predicate: QuadPredicate, givenType?: NamedNode): Link | ObjectInstance | undefined;
    protected instance(subject: QuadObject | QuadSubject, givenType?: NamedNode): ObjectInstance | Link | undefined;
    protected nextString(predicate: NamedNode): string | undefined;
    protected nextNumeric(predicate: NamedNode): number | undefined;
}