java 在 Spring 中实现 CrudRepository。我应该遵循的最佳设计是什么？
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Implementing CrudRepository in Spring. What's the best design I should follow?
提问by Faraj Farook
I have the User Repository extend from the CrudRepository as below
我有用户存储库从 CrudRepository 扩展如下
public interface UserRepository extends CrudRepository<User, Long>, DatatablesCriteriasRepository<User>
DatatablesCriteriasRepositoryhas a function which need to be implmented separately for different repositories.
DatatablesCriteriasRepository有一个功能需要为不同的存储库单独实现。
So I created the repository implementation class like this. In the implpackage.
所以我创建了这样的存储库实现类。在impl包里。
public class UserRepositoryImpl implements DatatablesCriteriasRepository<User>
Please note this is to implement the functions in DatatablesCriteriasRepositoryonly. I dont want to override the default functionalities presented in CrudRepositoryby the framework.
请注意，这只是为了实现功能DatatablesCriteriasRepository。我不想覆盖CrudRepository框架提供的默认功能。
But If I do something like this, it will suit more in the code design, as UserRepositoryImplactually implements UserRepositoryas the name suggests.
但是如果我做这样的事情，它会更适合代码设计，正如名字所暗示的那样UserRepositoryImpl实际实现UserRepository。
public class UserRepositoryImpl implements UserRepository
But again this will force me to extend all the functions in the UserRepository interface. How can I solve this issue by the way in a good code design?
但这将再次迫使我扩展 UserRepository 接口中的所有功能。如何在好的代码设计中顺便解决这个问题？
Can the UserRepositoryImplhas this name while it implements DatatablesCriteriasRepository?
可以在UserRepositoryImpl实现时使用这个名称DatatablesCriteriasRepository吗？
回答by Faraj Farook
Spring's repositories custom implementationsdocumentation provides the way to implement this as @JBNizet pointed it to me.
Spring 的存储库自定义实现文档提供了实现这一点的方法，正如@JBNizet 向我指出的那样。
Extract from the documentation is as follows.
文档摘录如下。
Interface for custom repository functionality
自定义存储库功能的接口
interface UserRepositoryCustom {
public void someCustomMethod(User user);
}
Implementation of custom repository functionality
自定义存储库功能的实现
class UserRepositoryImpl implements UserRepositoryCustom {
public void someCustomMethod(User user) {
// Your custom implementation
}
}
Changes to the your basic repository interface
对基本存储库界面的更改
interface UserRepository extends CrudRepository<User, Long>, UserRepositoryCustom {
// Declare query methods here
}
