[英]Spring JPA Data Repository Generic Implementation Example
Is it possible to create a generic Repository interface to save POJOs in my spring-data project? 是否可以创建一个通用的Repository接口来将POJO保存在我的spring-data项目中?
I have around 50 different objects and I don't want to create 50 corresponding repository interfaces one of each pojo ? 我大约有50个不同的对象,我不想为每个pojo之一创建50个相应的存储库接口吗?
For example, 例如,
public interface FooRepository extends JpaRepository<Foo, Integer> { }
public interface BarRepository extends JpaRepository<Bar, Integer> { }
and so on... 等等...
I do see similar questions on this site but not having a really good example. 我确实在该网站上看到了类似的问题,但没有一个很好的例子。
Thanks in advance for any help. 在此先感谢您的帮助。
I think the only way is to create a @NoBeanRepository
because the main goal of a Spring's repository is to provide a user-friendly interface to manipulate entities. 我认为唯一的方法是创建
@NoBeanRepository
因为Spring的存储库的主要目标是提供用户友好的界面来操纵实体。 But in this case your entities must have same properties. 但是在这种情况下,您的实体必须具有相同的属性。
@NoRepositoryBean
public interface SortOrderRelatedEntityRepository<T, ID extends Serializable>
extends SortOrderRelatedEntityRepository<T, ID> {
T findOneById(Long id);
List<T> findByParentIdIsNullAndSortOrderLessThanEqual(Integer sortOrder);
/** and so on*//
}
public interface StructureRepository
extends SortOrderRelatedEntityRepository<Structure, Long> {
Structure findOneById(Long id);
List<Structure> findByParentIdIsNullAndSortOrderLessThanEqual(Integer sortOrder);
/** and so on*//
}
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