update-locking

[Goran Borozan]

Hi !
In my GUI i hava a pop-up dialog that allow the user to book room.
My question is: Is it better to try to lock when the pop-up window creates(risk that the user forget the window and tge record is locked) or lock when the user is finished with writing the owner name(risk for overwriting)?

 
//maybe locking hiere ????
OwnerDialog ownerDialog = new OwnerDialog(fields[fields.length - 1]);
ownerDialog.setVisible(true);
//Set new owner value
 if (ownerDialog.getNewOwner() != null) {
     fields[fields.length - 1] = ownerDialog.getNewOwner();
 }
 //Try to update record
 try {
   long lockCookie = data.lock(recNo);
   data.update(recNo, fields, lockCookie);
   data.unlock(recNo, lockCookie);�
    .....

Thanks
/Goran

[Serkan Yazici]

Hi Goran,

I think it would be better the minimise the amount of time after locking a record. In my project, I didn't display a dialog for booking (handled on the main gui) but if I did; I would do the booking after the dialog but also check for record inconsistency (making sure the record key is not changed).