I get the following error:
Quote:
ERROR - (EmployeesPanel.java:550) - a different object with the same identifier value was already associated with the session: [data.StoreEmployee#Auke-2010-130-11-40-44-233-0000]
StoreEmployee contains info about an employee and a store. See mapping below.
First I remove all associations and then I remove the object itself. I suspect the object can get deleted automatically, because there are no more references, but when I don't it isn't deleted automatically.
This is the SessionHandler I use:
Code:
import org.hibernate.*;
import org.hibernate.cfg.*;
import data.Data;
public class SessionHandler
{
private static SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
public static Session getSession()
{
return sessionFactory.openSession();
}
public static void closeSession(Session session)
{
session.flush();
session.close();
}
public static void save(Session session, Data data)
{
Logger.get().info("save," + data.toString());
session.save(data);
}
public static void update(Session session, Data data)
{
Logger.get().info("update," + data.toString());
session.update(data);
}
public static void delete(Session session, Data data)
{
Logger.get().info("delete," + data.toString());
session.delete(data);
}
}
Here is the code where the error appears:
Code:
Session session = SessionHandler.getSession();
Transaction transaction = session.beginTransaction();
try
{
Employee employee = Employee.getEmployeeById(session, selectedEmployee.getId());
StoreEmployee storeEmployee = employee.getStoreEmployee();
employee.getStoreEmployees().remove(storeEmployee);
SessionHandler.update(session, employee);
Store store = Store.getStoreById(session, SystemConfig.STORE_ID);
store.getStoreEmployees().remove(storeEmployee);
SessionHandler.update(session, store);
Position position = storeEmployee.getPosition();
if (position != null)
{
position = Position.getPositionById(session, position.getId());
position.getStoreEmployees().remove(storeEmployee);
SessionHandler.update(session, position);
}
SessionHandler.delete(session, storeEmployee); // This line throws the exception
transaction.commit();
}
catch (Exception e)
{
transaction.rollback();
Logger.get().error(e.getMessage()); // Line 550
}
SessionHandler.closeSession(session);
Mapping:
Code:
<class name="data.StoreEmployee" table="storeEmployees">
<id name="id" column="id" length="31">
<generator class="assigned" />
</id>
<properties name="storeEmployeeUnique" unique="true">
<many-to-one name="store" class="data.Store" column="store" not-null="true" />
<many-to-one name="employee" class="data.Employee" column="employee" not-null="true" />
</properties>
<many-to-one name="position" class="data.Position" column="position" lazy="false" />
...
</class>
I suspect it's something with the sessions, or I'm just doing something wrong to delete this object.
Note:
The sessionHandler and the mapping have worked for along time.
The difference is: so far I deleted one object of a relation and cascade would delete the relation. Now I need to delete the relation without deleting the objects related to.
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