问题描述
如何在类中创建和实例化jpa存储库?我遇到的情况是我必须为泛型类中的不同实体创建存储库。
How do I create and instantiate a jpa repository inside a class? I'm in a situation where I have to create repositories for different entities inside a generic class.
我可以轻松地为Neo4j存储库这样做,
I could do that easily for Neo4j repositories like,
GraphRepository<T> graphRepository;
this.neo4jTemplate = new Neo4jTemplate(new RestGraphDatabase(
"http://localhost:7474/db/data"));
this.graphRepository = neo4jTemplate.repositoryFor(domainClass);
对于JpaRepository,我检查了文档并找到了这个,
For JpaRepository, I checked the documentation and found this,
RepositoryFactorySupport factory = … // Instantiate factory here
UserRepository repository = factory.getRepository(UserRepository.class);
我不确定如何在上面的代码中实例化工厂。
I'm not sure how to instantiate factory in the above code.
我也不能通过指定域类来创建像Neo4j那样的存储库吗?
Also Can't I create repository like I did for Neo4j, by specifying the domain class?
推荐答案
我终于以这种方式工作了,
I finally got it working this way,
SimpleJpaRepository<User, Serializable> jpaRepository;
jpaRepository = new SimpleJpaRepository<User, Serializable>(
User.class, entityManager);
使用SimpleJpaRepository,我可以使用所有存储库方法。
With SimpleJpaRepository, I can use all repository methods.
jpaRepository.save(user);
这篇关于如何在类中动态创建Jpa存储库?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!