与Hibernate无关的实体

Question

I have created this code:

Sale sale = new Sale();
saleService.create(sale);

Vendor vendor = new Vendor("name");

Sale updatedSale = saleService.findById(sale.getId());
updatedSale.setVendor(vendor);

try {
        saleService.update(updatedSale);
    } catch (EntityNotFoundException ex) {
        System.err.println("");
    }

Also, sale is in cascade with vendor:

@ManyToOne(cascade={CascadeType.PERSIST,CascadeType.REFRESH}, targetEntity = Vendor.class)
@Cascade({
    org.hibernate.annotations.CascadeType.SAVE_UPDATE,
    org.hibernate.annotations.CascadeType.PERSIST
        })
private Vendor vendor;

The saleService has this code:

@Transactional
public Sale create(Sale entity) {
    Sale created = entity;
    saleRepository.saveAndFlush(created);
    return created;
}

@Transactional(rollbackFor = EntityNotFoundException.class)
public Calibration update(Calibration entity) throws EntityNotFoundException {

   if (!calibrationRepository.exists(entity.getId())) {
        throw new EntityNotFoundException();
    }


    return calibrationRepository.saveAndFlush(entity);
}

It's also annoted as @Service . The repository is an Interface that implements JpaRepository<Sale, Long> .

I'm getting an Error saying that the name property of Vendor, that must not be null, is null.

Thanks!

Answer 1

upd Answer, corresponding to the first version of a question was entirely removed - in short, it suggested to flush changes again after entity was updated.

Current problem is in mixing two kinds of annotation - first is @ManyToOne annotation that belongs to JPA specification and second is @Cascade that is Hibernate specific.

Since you do not do anything Hibernate specific in your example, a solution would be to remove @Cascade annotation and add CascadeType.MERGE to @ManyToOne annotation.