Hello All
My question is
How can I get new version number of the object after calling saveOrUpdate method?
Please check following scenario
Code:
class ServiceInfo{
int serviceId;
Set<InfoItem> infos;
int version;
}
class InfoItem{
int serviceId
some Properties...
}
Mapping file for ServiceInfo
<version column="VERSION" name="version" type="integer" unsaved-value="null" insert="true" />
<set name="infos" inverse="true" lazy="true" cascade="all">
<key column="serviceId" not-null="true"/>
<one-to-many class="myPackage.InfoItem"/>
</set>
Whenever an InfoItem is added or removed for a specific ServiceInfo, I'm saving serviceInfo instance by calling saveOrUpdate method. This method inserts all of new InfoItems in ServiceInfo to db successfully.
Generic DAO example at
http://www.hibernate.org/328.html shows makePersistent method like following
Code:
@SuppressWarnings("unchecked")
public T makePersistent(T entity) {
getSession().saveOrUpdate(entity);
return entity;
}
After first save, user can continue processing on ServiceInfo and he/she might want to save it again. (adding and deleting InfoItem) At that point, in order not to get Optimistic lock exception, I want to keep ServiceInfo instance with latest version number in the user session(not hibernate session).
Calling saveOrUpdate inserts new version number to db but it doesn't update on T instance in this case ServiceInfo.... Why???
And I can not call refresh method like below
Code:
@SuppressWarnings("unchecked")
public T makePersistent(T entity) {
getSession().saveOrUpdate(entity);
getSession().refresh(entity);
return entity;
}
Because new InfoItem is not in the db yet as the transaction is not commited. So I will be getting HibernateException.
Any suggestion?
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