Hi Mr. Shin!
In this opportunity i write you to ask you about how to do the persistence
using DAO pattern (like we used in J2EEHomework-hibernatebasics - Lab 3514),
but when interpose several entities in ONE transaction (which respective dao
interfaces are in different scopes). To make myself more clear i propound the
following example:
When is neccesary to process a workorder and generate the corresponding bill
(only if the workorder was successfully updated). Using DAO Pattern this will
be like this:
...
order.setState("processed");
workrorderDao.update(order);
billDao.create(billFromOrder);
...
It is possible that (obviously because they are in different transaction by
using DAO, thereby different sessions) that one gets processed and not the
other (e.g. because it was throw an execption), which should not happen.
In the example above i make an update and an insert, but the idea is to know
how to do this with other scenes (deleting and updating, etc.).
Thanks in advance!
Federico Miralles
Mendoza, ARGENTINA
P.S.: sorry my english :-)
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