import type { ControlConnectionProvider, DatabaseConnection, QueryResult } from '../../driver/database-connection.js';
import type { Driver, TransactionSettings } from '../../driver/driver.js';
import { CompiledQuery } from '../../query-compiler/compiled-query.js';
import type { QueryCompiler } from '../../query-compiler/query-compiler.js';
import type { AbortableOperationOptions } from '../../util/abort.js';
import type { PostgresClientConstructor, PostgresCursorConstructor, PostgresDialectConfig, PostgresPoolClient } from './postgres-dialect-config.js';
declare const PRIVATE_RELEASE_METHOD: unique symbol;
export declare class PostgresDriver implements Driver {
    #private;
    constructor(config: PostgresDialectConfig);
    /**
     * Initializes the driver.
     *
     * After calling this method the driver should be usable and `acquireConnection` etc.
     * methods should be callable.
     */
    init(options?: AbortableOperationOptions): Promise<void>;
    /**
     * Acquires a new connection from the pool.
     */
    acquireConnection(options?: AbortableOperationOptions): Promise<DatabaseConnection>;
    /**
     * Begins a transaction.
     */
    beginTransaction(connection: DatabaseConnection, settings: TransactionSettings): Promise<void>;
    /**
     * Commits a transaction.
     */
    commitTransaction(connection: DatabaseConnection): Promise<void>;
    /**
     * Rolls back a transaction.
     */
    rollbackTransaction(connection: DatabaseConnection): Promise<void>;
    savepoint(connection: DatabaseConnection, savepointName: string, compileQuery: QueryCompiler['compileQuery']): Promise<void>;
    rollbackToSavepoint(connection: DatabaseConnection, savepointName: string, compileQuery: QueryCompiler['compileQuery']): Promise<void>;
    releaseSavepoint(connection: DatabaseConnection, savepointName: string, compileQuery: QueryCompiler['compileQuery']): Promise<void>;
    /**
     * Releases a connection back to the pool.
     */
    releaseConnection(connection: PostgresConnection): Promise<void>;
    /**
     * Destroys the driver and releases all resources.
     */
    destroy(): Promise<void>;
}
interface PostgresConnectionOptions {
    controlClient?: PostgresClientConstructor;
    cursor: PostgresCursorConstructor | null;
    poolOptions: object;
}
declare class PostgresConnection implements DatabaseConnection {
    #private;
    constructor(client: PostgresPoolClient, options: PostgresConnectionOptions);
    cancelQuery(controlConnectionProvider: ControlConnectionProvider): Promise<void>;
    collectSessionInfo(): Promise<void>;
    executeQuery<O>(compiledQuery: CompiledQuery): Promise<QueryResult<O>>;
    killSession(controlConnectionProvider: ControlConnectionProvider): Promise<void>;
    streamQuery<O>(compiledQuery: CompiledQuery, chunkSize: number): AsyncIterableIterator<QueryResult<O>>;
    [PRIVATE_RELEASE_METHOD](): void;
}
export {};