import { DatabaseContract, QueryClientContract } from '@ioc:Adonis/Lucid/Database';
import { TokenProviderContract, ProviderTokenContract, DatabaseTokenProviderConfig } from '@ioc:Adonis/Addons/Auth';
import { ProviderToken } from '../../Tokens/ProviderToken';
/**
 * Database backend tokens provider
 */
export declare class TokenDatabaseProvider implements TokenProviderContract {
    private config;
    private db;
    constructor(config: DatabaseTokenProviderConfig, db: DatabaseContract);
    /**
     * Custom connection or query client
     */
    private connection?;
    /**
     * Returns the query client for database queries
     */
    private getQueryClient;
    /**
     * The foreign key column
     */
    private foreignKey;
    /**
     * Returns the builder query for a given token + type
     */
    private getLookupQuery;
    /**
     * Define custom connection
     */
    setConnection(connection: string | QueryClientContract): this;
    /**
     * Reads the token using the lookup token id
     */
    read(tokenId: string, tokenHash: string, tokenType: string): Promise<ProviderTokenContract | null>;
    /**
     * Saves the token and returns the persisted token lookup id.
     */
    write(token: ProviderToken): Promise<string>;
    /**
     * Removes a given token
     */
    destroy(tokenId: string, tokenType: string): Promise<void>;
}