public interface PostRepository extends CrudRepository<Post, Long>{
    List<Post> getPostsOlderThanDate(Date date);
}

import org.springframework.data.jpa.repository.support.SimpleJpaRepository;

import javax.persistence.EntityManager;
import javax.persistence.TypedQuery;
import java.util.Date;
import java.util.List;

public class PostRepositoryImpl extends SimpleJpaRepository<Post, Long> implements PostRepository {

    private EntityManager entityManager;

    public PostRepositoryImpl(EntityManager em) {
        super(Post.class, em);
        this.entityManager = em;
    }

    @Transactional
    @Override
    public List<Post> getPostsOlderThanDate(Date date) {
        String query = ""; //create query
        TypedQuery<Post> typedQuery = entityManager.createQuery(query, Post.class);
        return typedQuery.getResultList();
    }
}

<bean id="personRepository" class="com.package.PersonRepositoryImpl">
    <constructor-arg ref="entityManagerFactory" />
</bean>