java - deleted object would be re-saved by cascade (remove deleted object from associations) - issue with service method invoking -

i have faced strange problem regarding deleting child object association.

here first object order:

 @lazycollection(lazycollectionoption.false)  @onetomany(mappedby = "order", orphanremoval=true)  @cascade({org.hibernate.annotations.cascadetype.all})  private list<exchangetransaction> exchangetransactions = new arraylist<exchangetransaction>(); 

here second object exchangetransaction:

@manytoone @joincolumn(name = "orderid", insertable = true, updatable = false) private order order; 

i want delete order related exchangetransactions.

if perform delete operation through controller, works fine. here code inside controller:

 order order = orderservice.getorder(orderid);  user user = order.getuser();  user.removeorder(order);  orderservice.removeorder(order); 

if delete operation performed @scheduled service, i've got error message:

error [org.springframework.scheduling.support.taskutils$loggingerrorhandler] [] pool-3-thread-1 unexpected error occurred in scheduled task. org.springframework.dao.invaliddataaccessapiusageexception: deleted object re-saved cascade (remove deleted object associations): [currencyexchange.model.exchangetransaction#2];

code inside service object:

@override @transactional @scheduled(cron = "*/30 * * * * *")     public void deleteinactiveorders() {         orderdao.deleteinactiveorders();     } 

code inside dao:

@override public void deleteinactiveorders() { list<order> allinactiveorderslist = sessionfactory.getcurrentsession().createquery("from order orderdate <= sysdate-1").list();     if (allinactiveorderslist.size() >=1 ){         (order order: allinactiveorderslist){             user user = order.getuser();             user.removeorder(order);             sessionfactory.getcurrentsession().delete(order);         }       }     } 

update: not @scheduled issue. when invoke deleteinactiveorders() controller i've got same error.