Spring JPA基础存储库

Question

I have created a custom repository to override persistence methods and tried to wire it up as described in the spring docs . I receive no errors, all entities and repositories are found on startup, and when I call repo.saveAll(entities), persistence works normally. However, my custom code is never called. I have added log statements and even thrown RuntimeExceptions in my code, just to see if it's being executed, but it's definitely being ignored. What step have I missed?

@Configuration
@Profile("test")
@EnableJpaRepositories(repositoryBaseClass = SetClientInfoRepositoryImpl.class,
        basePackages = {"gov.penndot.hwy.apras.common.repository" }, 
        entityManagerFactoryRef = "serviceEntityManagerFactory", 
        transactionManagerRef = "serviceTransactionManager")
public class TestDatabaseConfig {

    @Bean(name = "serviceDataSource")
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("org.h2.Driver");
        dataSource.setUrl("jdbc:h2:mem:db;DB_CLOSE_DELAY=-1");
        dataSource.setUsername("sa");
        dataSource.setPassword("sa");

        return dataSource;
    }

    @Bean
    public EntityManagerFactoryBuilder entityManagerFactoryBuilder() {
        return new EntityManagerFactoryBuilder(new HibernateJpaVendorAdapter(), new HashMap<String, Object>(), null);
    }

    @Bean(name = "serviceEntityManagerFactory")
    public LocalContainerEntityManagerFactoryBean serviceEntityManagerFactory(EntityManagerFactoryBuilder builder,
            @Qualifier("serviceDataSource") DataSource dataSource) {

        return builder
                .dataSource(dataSource)
                .packages("stuff")
                .persistenceUnit("service")
                .build();
    }

    @Bean(name = "serviceTransactionManager")
    public PlatformTransactionManager transactionManager(
            @Qualifier("serviceEntityManagerFactory") EntityManagerFactory serviceEntityManagerFactory) {
        return new JpaTransactionManager(serviceEntityManagerFactory);
    }

Repository:

@NoRepositoryBean
    public class SetClientInfoRepositoryImpl<T, ID extends Serializable> extends SimpleJpaRepository<T, ID> {
        private static final Logger log = LoggerFactory.getLogger(SetClientInfoRepositoryImpl.class);
        private final EntityManager em;

        public SetClientInfoRepositoryImpl(JpaEntityInformation<T, ID> entityInformation, EntityManager entityManager) {
            super(entityInformation, entityManager);
            this.em = entityManager;
        }

        @Transactional
        @Override
        public <S extends T> S save(S entity) {
            setClientInfo();
            return super.save(entity);
        }

        @Transactional
        @Override
        public void deleteById(ID id) {
            setClientInfo();
            super.deleteById(id);
        }

        @Transactional
        @Override
        public void delete(T entity) {
            setClientInfo();
            super.delete(entity);
        }

        @Transactional
        @Override
        public void deleteAll(Iterable<? extends T> entities) {
            setClientInfo();
            super.deleteAll(entities);
        }

        @Transactional
        @Override
        public void deleteInBatch(Iterable<T> entities) {
            setClientInfo();
            super.deleteInBatch(entities);
        }

        @Transactional
        @Override
        public void deleteAll() {
            setClientInfo();
            super.deleteAll();
        }

        @Transactional
        @Override
        public void deleteAllInBatch() {
            setClientInfo();
            super.deleteAllInBatch();
        }

        @Transactional
        @Override
        public <S extends T> S saveAndFlush(S entity) {
            setClientInfo();
            return super.saveAndFlush(entity);
        }

        @Transactional
        @Override
        public <S extends T> List<S> saveAll(Iterable<S> entities) {
            setClientInfo();
            super.saveAll(entities);
            throw new RuntimeException("foo");
        }

        private void setClientInfo() {
            log.debug("Entering setClientInfo method");
            [stuff]
        }
    }

Answer 1

OK, this is quite a desperate idea, but it could worth a try...

Create a custom repository interface:

public interface SetClientInfoRepository<T, ID> extends JpaRepository<T, ID> {
}

Implement this repository interface by your custom base repository:

public class SetClientInfoRepositoryImpl<T, ID extends Serializable> extends SimpleJpaRepository<T, ID> implements SetClientInfoRepository<T, ID> {
}

... and finally extend this interface by your repository interfaces instead of JpaRepository

In this way Spring has to create the repository-proxies from your implementation because there are no other classes it could use. Also, if it cannot create the repositories because of any reason, you will get a more informative exception during startup.

Using the custom repository interface is not a bad thing in its own, because there is always a good chance that you want to add some common custom methods to your repositories later and then it will come handy.