Spring数据和mongodb - 在@Transactional中用弹簧简单回滚 [英] Spring data and mongodb - simple roll back with spring within @Transactional

问题描述

我有2个存储库，一个用于mongodb（DocumentRepository），另一个用于hibernate实体（EntityRepository）

我有一个简单的服务：

  @Transactional 
 public doSomePersisting（）{
 try {
 this.entityRepository.save（entity）; 
 this.documentRepository.save（document）; 
 
 catch（...）{
 // Rollback mongoDB here 
} 
} 
  

是否可以在// Rollback mongoDB here这一行中回滚mongoDB？
我已经从实体部分回滚（Transactional annotation）了。

解决方案

MongoDB不支持事务至少不在单个文档的范围之外）。如果您想回滚更改，则需要自己手动进行修改。那里有几个资源描述了在Mongo中实现自己的事务的方法，如果你在某些情况下真的需要它们的话。你可以看看..

http://docs.mongodb.org/manual/tutorial/perform-two-phase-commits/

这是只是对你可以使用的模式的解释。如果您发现您绝对需要应用程序中的交易，则应考虑MongoDB是否适合您的需求。

I have 2 repositories, one for mongodb (DocumentRepository) and the other for hibernate entity (EntityRepository)

I have a simple service:

 @Transactional
 public doSomePersisting() {
     try {
           this.entityRepository.save(entity);
           this.documentRepository.save(document);
     }
     catch(...) {
         //Rollback mongoDB here
     }
 }

Is it possible to rollback the mongoDB on the "//Rollback mongoDB here" line? I already got a rollback from the entity part (Transactional annotation)

解决方案

MongoDB doesn't support transactions (at least not outside the scope of a single document). If you want to roll back changes you will need to handcraft that yourself. There are a few resources out there that describe ways of implementing your own transactions in Mongo if you really need them in certain circumstances. You could take a look at..

http://docs.mongodb.org/manual/tutorial/perform-two-phase-commits/

This is just an explanation of a pattern you could use. If you find that you absolutely need transactions in your application, you should consider whether MongoDB is a good fit for your needs.

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