Spring Data(JPA)存储库是否是线程安全的? (又名SimpleJpaRepository线程安全) [英] Is a Spring Data (JPA) Repository thread-safe? (aka is SimpleJpaRepository thread safe)
问题描述
我正在使用 Spring Data(JPA)存储库来处理CRUD样板。
I am using a Spring Data (JPA) repository to take care of CRUD boilerplate.
我定义了我的存储库接口,如下所示:
I define my repository interface like so:
import org.springframework.data.repository.CrudRepository;
public interface FooRepository extends CrudRepository<Foo, Long>
{
public Foo findByXAndYAndZ(X x, Y y, Z z);
}
Spring然后自动神奇地生成我所述接口的实现。我们得到的是代理,但我相信最终我们会得到一个 org.springframework.data.jpa.repository.support.SimpleJpaRepository
。
Spring then auto-magically generates me an implementation of said interface. What we get back is a proxy, but I believe that eventually we get down to a org.springframework.data.jpa.repository.support.SimpleJpaRepository
.
A JdkDynamicAopProxy
是线程安全的,如果基础目标类是线程安全的。因此问题是: SimpleJpaRepository
线程安全?
A JdkDynamicAopProxy
is thread-safe if the underlying target class is thread-safe. The question therefore is: is SimpleJpaRepository
thread safe?
推荐答案
一般来说,是。它假设一个托管的 EntityManager
,我们将从Spring的工厂类中获取(如果您使用Spring作为容器)或者作为CDI托管bean(通过 @Producer
方法)。
Generally, yes. It's assuming a managed EntityManager
which we'll either obtain from Spring's factory classes (in case you're using Spring as container) or as a CDI managed bean (declared through an @Producer
method).
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