@mikro-orm/core/utils/TransactionManager.d.ts

TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, PostgreSQL and SQLite databases as well as usage with vanilla JavaScript.

import type { EntityManager } from '../EntityManager';
import { type TransactionOptions } from '../enums';
/**
 * Manages transaction lifecycle and propagation for EntityManager.
 */
export declare class TransactionManager {
    private readonly em;
    constructor(em: EntityManager);
    /**
     * Main entry point for handling transactional operations with propagation support.
     */
    handle<T>(cb: (em: EntityManager) => T | Promise<T>, options?: TransactionOptions): Promise<T>;
    /**
     * Executes the callback with the specified propagation type.
     */
    private executeWithPropagation;
    /**
     * Suspends the current transaction and returns the suspended resources.
     */
    private suspendTransaction;
    /**
     * Resumes a previously suspended transaction.
     */
    private resumeTransaction;
    /**
     * Executes operation without transaction context.
     */
    private executeWithoutTransaction;
    /**
     * Creates new independent transaction, suspending any existing one.
     */
    private executeWithNewTransaction;
    /**
     * Creates new transaction context.
     */
    private createNewTransaction;
    /**
     * Executes nested transaction with savepoint.
     */
    private executeNestedTransaction;
    /**
     * Creates a fork of the EntityManager with the given options.
     */
    private createFork;
    /**
     * Determines if changes should be propagated to the upper context.
     */
    private shouldPropagateToUpperContext;
    /**
     * Merges entities from fork to parent EntityManager.
     */
    private mergeEntitiesToParent;
    /**
     * Registers a deletion handler to unset entity identities after flush.
     */
    private registerDeletionHandler;
    /**
     * Processes transaction execution.
     */
    private processTransaction;
    /**
     * Executes transaction workflow with entity synchronization.
     */
    private executeTransactionFlow;
}