Spring Jpa Specification with list of long where in query - spring

Question

I want to run a where in query with Spring JPA Specification and criteria builder. I am having issue where I will receive a List ids from request and run specification query but could't find any way to do so.
This is what I have done so far.
public class DistributorMasterDataSpecification implements Specification<DistributorMasterData> {
#Override
public Predicate toPredicate(Root<DistributorMasterData> root, CriteriaQuery<?> query, CriteriaBuilder criteriaBuilder) {
return
codeSpec()
.and(idSpec())
.toPredicate(root, query, criteriaBuilder);
}
private Specification<DistributorMasterData> idSpec() {
return ((root, query, criteriaBuilder) ->
Objects.isNull(filterDto.getDistributorIds()) ?
null : root.get(DistributorMasterData_.ID).in(filterDto.getDistributorIds())
);
}
}
I am unable to figure out how to prepare where in query with specification. With current implementation I facing the error below
org.springframework.dao.InvalidDataAccessApiUsageException: literal value cannot be null; nested exception is java.lang.IllegalArgumentException: literal value cannot be null

Answer 1

You can create a custom repository and after you do the implementation
public interface EditeurRepositoryCustom {
Page<User> search(UserSearch search, Pageable page);
}
#Repository
public class UserRepositoryCustomImpl extends SimpleJpaRepository<User,Long> implements EditeurRepositoryCustom {
#Autowired
private EntityManager entityManager;
public EditeurRepositoryCustomImpl(EntityManager em) {
super(User.class, em);
}
public Page<User> search(UserSearch search, Pageable page) {
Specification<User> hasExternalOrder = (Root<User> mainRoot, CriteriaQuery<?> mainCq, CriteriaBuilder mainCb) -> {
return mainRoot.get("externalOrder").isNotNull();
};
Specification<User> isPrincipal = (Root<User> mainRoot, CriteriaQuery<?> mainCq, CriteriaBuilder mainCb) -> {
if(!search.principal()){
return mainCb.and();
}
return mainCb.isTrue(mainRoot.get("main"));
};
};
return findAll(hasNameContain.and(hasExternalOrder).and(isPrincipal), page);
}
You can combine multiple spec