Dear Sirs

I need to initialize the POJO object from data base table that have a collection of values from another table. Everything is OK and an I bring all the data into the collection by many-to-many association.

But is it possible to tell of hibernate when load the collection? I want sometime to initialize the object without loading the collection element.

I tried it by setting property lazy="true":

<set name="roles" table="test_user_roles" inverse="false" lazy="true">
<key column="user_id"/>
<many-to-many column="role_id" class="com.piconsult.model.Role"/>
</set>

It seem to work but when I verify the collection is loaded.

It is the source that load data from database:

HibernateTemplate ht = getHibernateTemplate();

Session session = SessionFactoryUtils.getSession(this.getSessionFactory(), true);
TransactionSynchronizationManager.bindResource(this.getSessionFactory(), new SessionHolder(session));

User user = (User)ht.get(User.class, id);
System.out.println("roles size: " + user.getRoles().size()); //- here I want to have a collection with 0 elements
if (user == null)
{
throw new ObjectRetrievalFailureException(User.class, id);
}
TransactionSynchronizationManager.unbindResource(this.getSessionFactory());
SessionFactoryUtils.releaseSession(session, this.getSessionFactory());
return user;

Regards
Kamen

hi,

the problem is wth following part of code



when you call size method on set, at that time it loads the data from data base, as you requested an operation on that data,

hibernate has its own implemntation of Set, List and other collection types.

Call the size method after closing the session and check the results.


Rohit

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Thank You sir

It is really the reason.

Best regards
Kamen

please rate if it helped.. :)