import type { Quad } from '@rdfjs/types';
import type { AsyncIterator } from 'asynciterator';
import type { RdfAccessScope } from '../rdf/RdfAccessScope';
export interface SparqlLoadDocumentOptions {
    sourceUri: string;
    body: string;
    mediaType?: string;
}
export interface SparqlQueryOptions {
    sourceUri?: string;
    defaultDataset?: 'physical' | 'exactSource' | 'scopedUnion';
    timeoutMs?: number;
    signal?: AbortSignal;
}
export interface SparqlVoidOptions extends SparqlQueryOptions {
    loadDocument?: SparqlLoadDocumentOptions;
}
/**
 * SPARQL Engine interface - common abstraction for SPARQL query engines
 */
export interface SparqlEngine {
    queryBindings(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlQueryOptions): Promise<any>;
    queryQuads(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlQueryOptions): Promise<any>;
    queryBoolean(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlQueryOptions): Promise<boolean>;
    queryVoid(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlVoidOptions): Promise<void>;
    constructGraph(graph: string, basePath: string, accessScope?: RdfAccessScope): Promise<AsyncIterator<Quad>>;
    listGraphs(basePath: string, accessScope?: RdfAccessScope): Promise<Set<string>>;
    close(): Promise<void>;
}
/**
 * SubgraphQueryEngine - SPARQL engine with subgraph (tenant) isolation
 *
 * Wraps a SparqlEngine implementation for use in the system.
 */
export declare class SubgraphQueryEngine {
    private readonly logger;
    private readonly impl;
    /**
     * Create a SubgraphQueryEngine
     * @param engine - A SparqlEngine implementation
     */
    constructor(engine: SparqlEngine);
    queryBindings(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlQueryOptions): Promise<any>;
    queryQuads(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlQueryOptions): Promise<any>;
    queryBoolean(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlQueryOptions): Promise<boolean>;
    queryVoid(query: string, basePath: string, accessScope?: RdfAccessScope, options?: SparqlVoidOptions): Promise<void>;
    constructGraph(graph: string, basePath: string, accessScope?: RdfAccessScope): Promise<AsyncIterator<Quad>>;
    listGraphs(basePath: string, accessScope?: RdfAccessScope): Promise<Set<string>>;
    close(): Promise<void>;
}