import { IDatabaseConnection } from './IDatabaseConnection';
import { IQueryable } from './IQueryable';
import { Application } from './Application';
import { IsolationLevel } from './IsolationLevel';
export type ITransactionExecutor = (connection: IDatabaseConnection) => Promise<void>;
/**
 * A class encapsulating an entire transaction from beginning to commitment.
 *
 * This encapsulates a routine to conduct for the transaction.
 * Should the transaction fail due to a deadlock, the transaction will automatically
 * be tried.
 *
 * NOTE: It is unsafe to run two transactions on the same connection concurrently.
 * The execution *must* be waited to complete before executing another transaction,
 * on the same connection.
 */
export declare class Transaction implements IQueryable<void> {
    private $retryLimit;
    private $application;
    private $isolationLevel;
    private $executor;
    constructor(app: Application, executor: ITransactionExecutor, retryLimit?: number, isolationLevel?: IsolationLevel);
    onPreQuery(connection: IDatabaseConnection): Promise<void>;
    getQuery(connection: IDatabaseConnection): string;
    getParametersForQuery(): Record<string, any>;
    onPostProcess(connection: IDatabaseConnection, results: any): Promise<void>;
    execute(connection: IDatabaseConnection): Promise<void>;
}