Method transactional

packages/core/src/EntityManager.ts:1683–1692

* Runs your callback wrapped inside a database transaction. * * If a transaction is already active, a new savepoint (nested transaction) will be created by default. This behavior * can be controlled via the `propagation` option. Use the provided EntityManager instance for all operations tha

(cb: (em: this) => T | Promise<T>, options: TransactionOptions = {})

   * ```
   */
  async transactional<T>(cb: (em: this) => T | Promise<T>, options: TransactionOptions = {}): Promise<T> {
    const em = this.getContext(false);

    if (this.#disableTransactions || em.#disableTransactions) {
      return cb(em);
    }

    const manager = new TransactionManager(this);
    return manager.handle(cb as (em: EntityManager) => T | Promise<T>, options);
  }

  /**
   * Starts new transaction bound to this EntityManager. Use `ctx` parameter to provide the parent when nesting transactions.