用Hibernate和Guice管理JavaSE中的事务

问题描述

我正在编写一个使用GWT，Hibernate和Google Guice（带GIN）的相当简单的应用程序。我想要做的是使用外部管理器来管理事务（比如在Spring中使用 @Transactional ），而不是使用 EntityManager＃getTransaction 。我尝试使用 @Transactional ，但它似乎不适用于我。

我有EntityManager已注入使用 Providers ，如下所示：

  / * import stuff * / 
 
 public class DbProvider实现Provider< EntityManager> {
 
 public EntityManager get（）{
 EntityManagerFactory emf = Persistence.createEntityManagerFactory（persdb）; 
返回emf.createEntityManager（）; 
} 
 
} 
  

它似乎在管理手动交易。我希望自动管理事务，也可以使用DBUnit进行自动化测试。

有谁知道如何解决这个问题？

@Transactional 在Guice工作：
$ b

• 您需要 guice-persist.jar 在你的类路径中


• @Transactional 方法的对象必须由Guice创建


• 这些方法不能是 private

I'm writing a rather simple application that uses GWT, Hibernate and Google Guice (with GIN). What I wanted to do is to have transactions managed using external manager (like using @Transactional in Spring), instead of using EntityManager#getTransaction. I tried using @Transactional, but it doesn't seem to work for me.

I have EntityManager already injected using Providers, like this:

/* import stuff */

public class DbProvider implements Provider<EntityManager> {

    public EntityManager get() {
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("persdb");
        return emf.createEntityManager();
    }

}

It seems to work properly when managing the transactions manually. I wanted to have transactions managed automatically, also for making the automated test with DBUnit.

Does anyone know how to solve that?

解决方案

Having @Transactional work in Guice requires three things:

• You need guice-persist.jar in your classpath
• The object on which the @Transactional methods are called must be created by Guice
• The methods must not be private

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