休眠：删除的对象将被重新保存通过级联

Question

定义：

@OneToMany(mappedBy = "product", fetch = FetchType.LAZY, cascade = { CascadeType.ALL }, orphanRemoval = true) 
@Where(clause = "ownerType=22") 
private List<AirlineSupplierProductFile> files = new ArrayList<AirlineSupplierProductFile>(0); 

代码：

@RequestMapping(value = "/remove-product-file", method = RequestMethod.GET, headers = BaseController.AJAX_HEADER) 
public @ResponseBody JSONResponse removeProductFile(@RequestParam(value = "id", required = true) Long id, 
     @RequestParam(value = "product", required = true) Long productId, 
     @CurrentUser UserDetailsExtended currentUser) { 
    JSONResponse json = new JSONResponse(); 

    try { 
     AirlineSupplierProductFile file = (AirlineSupplierProductFile) fileStorageService.get2(id, OwnerType.AirlinesSupplierProduct); 
     if (file.getProduct() == null || file.getProduct().getId() == productId) 
      fileStorageService.delete(file); 
    } 
    catch (Exception e) { 
     json.setData(I18n.getString("errors.common.unexepected")); 
     json.setCode(AjaxError.Undefined); 

     log(e, currentUser.getUsername()); 
    } 

    return json; 
} 

其中fileStorageService.delete(file)是：

@Transactional 
public void delete(IFileStorageFile object) { 
    Session session = SessionFactoryUtils.getSession(sessionFactory, false); 

    session.delete(object); 
} 

问题：失败deleted object would be re-saved by cascade 。

问题：为什么？

谢谢

Answer 1

从拥有它的产品的airlineSupplierProductFiles的列表中删除AirlineSupplierProductFile：

AirlineSupplierProductFile file = (AirlineSupplierProductFile) fileStorageService.get2(id, OwnerType.AirlinesSupplierProduct); 

if (file.getProduct() == null || file.getProduct().getId() == productId) { 
    if (file.getProduct() != null) { 
     file.getProduct().removeAirlineSupplierProductFile(file); 
    } 
    fileStorageService.delete(file); 
}