import Catalog from './catalog';
import Result from './result';
import Session from './session';
/**
 * A driver that can hold multiple {@link Session}s with a remote MillenniumDB instance. The {@link Session}s have
 * the interface for sending queries and receiving results. It is expected that an application holds a single
 * driver instance.
 */
declare class Driver {
    private _open;
    private readonly _url;
    private readonly _sessions;
    /**
     * This constructor should never be called directly
     *
     * @param url the URL for the MillenniumDB server
     */
    constructor(url: string);
    /**
     * Get the {@link Catalog} of the remote MillenniumDB instance
     *
     * @returns Promise that will be resolved with the {@link Catalog}
     */
    catalog(): Promise<Catalog>;
    /**
     * Cancel the execution of a currently running query. Internally this will create a temporary {@link Session}
     * that will be closed after the query has been cancelled.
     *
     * @param result the {@link Result} to cancel
     */
    cancel(result: Result): Promise<void>;
    /**
     * Create a {@link Session}, establishing a new connection with the remote MillenniumDB instance.
     * The {@link Session} must be closed when your operations are done.
     *
     * @param options the options for the {@link Session}
     * @returns a new {@link Session} instance
     */
    session(): Session;
    /**
     * Close all open {@link Session}s
     *
     * @returns Promise that will be resolved when all {@link Session}s are closed
     */
    close(): Promise<void>;
    private _ensureOpen;
}
export default Driver;