Loopback4 中的事务支持吗？

Loopback4如何支持事务？ 有没有类似的装饰器，比如@Transaction？

我查看了这里的文档https://loopback.io/doc/en/lb4/Repositories.html https://loopback.io/doc/en/lb4/Repositories.html但没有提及该交易。

LoopBack 4 现在支持数据库事务已经有一段时间了：

import {
  Transaction,
  DefaultTransactionalRepository,
  IsolationLevel,
} from '@loopback/repository';

// assuming there is a Note model extending Entity class, and
// ds datasource which is backed by a transaction enabled
// connector
const repo = new DefaultTransactionalRepository(Note, ds);
// Now we have a transaction (tx)
const tx = await repo.beginTransaction(IsolationLevel.READ_COMMITTED);

const created = await repo.create({title: 'Groceries'}, {transaction: tx});
const updated = await repo.update(
  {title: 'Errands', id: created.id},
  {transaction: tx},
);

// commit the transaction to persist the changes
await tx.commit();

进一步阅读：

• https://loopback.io/doc/en/lb4/Using-database-transactions.html https://loopback.io/doc/en/lb4/Using-database-transactions.html