Im trying to get a lazy collection and a lazy exception is throwed. I use the OpenSessionInView pattern, implemented by a filter. This is the filter:
Code:
public class HibernateFilter implements Filter{
public void init(FilterConfig arg0) throws ServletException {
sf=HibernateUtil.getSessionFactory();
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,ServletException {
Session session=null;
try {
session=sf.getCurrentSession();
session.beginTransaction();
chain.doFilter(request,response);
session.getTransaction().commit();
} catch (HibernateException e) {
if(e instanceof StaleObjectStateException){
//log.error("Se ha producido un error debido a una actualización concurrente de datos. La actualización que intenta hacer el cliente es desestimada.",e);
}else{
//log.error("Se ha producido un error al comprometer la transacción.",e);
}
try {
if(session.getTransaction().isActive()){
session.getTransaction().rollback();
}
} catch (Throwable e1) {
throw new ServletException(e1);
}
throw e;
} catch (Throwable e) {
try {
if(session.getTransaction().isActive()){
session.getTransaction().rollback();
}
} catch (Throwable e1) {
throw new ServletException(e1);
}
throw new ServletException(e);
}
}
}
In my DAO class, i get the Hibernate Session with code like this:
Code:
...
s=HibernateUtil.getSessionFactory().getCurrentSession();
s.lock(user,LockMode.NONE);
...
user.getRoles();
....
In my hibernate.cfg.xml, i have added two lines:
<property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
<property name="hibernate.current_session_context_class">thread</property>
I have the autocommit disabled:
<property name="hibernate.connection.autocommit">false</property>
The exception in randomized throwed when i access to a lazy load collection. I get the session in the filter and I commit it after the view is rendered. I dont close the session or commit the transaction in other place.
The exception's trace is:
Code:
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: es.elsendero.comismar.to.acceso.PerfilTO.perfilesHijos, no session or session was closed
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:358)
at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:350)
at org.hibernate.collection.AbstractPersistentCollection.readSize(AbstractPersistentCollection.java:97)
at org.hibernate.collection.PersistentSet.size(PersistentSet.java:114)
at
...
I have seem this links and my code is like them but falls:
http://www.hibernate.org/43.html
http://www.hibernate.org/42.html
Thanks
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