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org.hibernate.NonUniqueObjectException

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No-one

Post subject: org.hibernate.NonUniqueObjectException

Posted: Wed Aug 29, 2007 4:08 am

Newbie

Joined: Wed Aug 08, 2007 3:51 am
Posts: 6

Code:

public ICurrency getSystemCurrency(Session session) {
      ICurrency currency = null;

      Query query = null;

      query= session.createQuery("from Currency where systemCurrency = true");

      if (!Utils.isEmtpyCollection(query.list())) {

         currency = (ICurrency) ((query.list().get(0)));
         
         return currency;
      } else {
         currency = null;
         return currency;
      }
   }

I got a large method in my application:
testing stuf
process shopping cart
process pending orders
redirect to another page

in process shopping cart i do al sorts of stuf incl:
generate proforma documents --> here i call through a service this dao method

in pending orders i do al sorts of stuf incl:
generate invoice documents --> here i call through a service this dao method

the second time i call this method, to get the systemCurrency. I get :

Code:

org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session

I looked in the session and idd that object is still in the session. But how do i get it out and can test on it ?

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No-one

Post subject:

Posted: Wed Aug 29, 2007 10:10 am

Newbie

Joined: Wed Aug 08, 2007 3:51 am
Posts: 6

Anyone?

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vishwas.tp

Post subject:

Posted: Thu Aug 30, 2007 12:04 am

Newbie

Joined: Thu Dec 21, 2006 5:18 am
Posts: 3
Location: Bangalore

Clear the session before calling the the method.

Code:

session.clear();

or
After fetching the object remove it from the session using

Code:

session.evict(currency );

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No-one

Post subject:

Posted: Thu Aug 30, 2007 3:32 am

Newbie

Joined: Wed Aug 08, 2007 3:51 am
Posts: 6

Thx for replying, but already tried it.

I get :

Code:

org.hibernate.LazyInitializationException

I got the same problem at :

Quote:

public IContentContainer getContentContainerByName(String contentContainerName,int languageId, Session session) {
IContentContainer contentContainer = null;
Query query = null;

query = session
.createQuery("from ContentContainer where contentContainerName = :contentContainerName and languageId = :languageId");
query.setString("contentContainerName", contentContainerName);
query.setInteger("languageId", languageId);

try {
query.list();
} catch (Exception e) {
e.printStackTrace();
}
if (!Utils.isEmtpyCollection(query.list())) {

contentContainer = ((IContentContainer) (query.list().get(0)));

return contentContainer;
}
contentContainer = null;
return contentContainer;
}

query.list(); --> non unique error. And i don't even see an object in the session. Which totally strange. That's something i didn't had at currency.

I tried :
session.evict(currency);
session.clear();

or

Code:

contentContainer = ((IContentContainer) (query.list().get(0)));
session.evict(contentContainer);
return contentContainer;

Code:

contentContainer = ((IContentContainer) (query.list().get(0)));
session.clear();
return contentContainer;

They all gave :

Code:

org.hibernate.LazyInitializationException

at contentcontainer :

Code:

org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: be.in.inforbusiness.model.implementations.contentcontainer.ContentContainer.containerElements, no session or session was closed

Anyone got more ideas plz ?

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No-one

Post subject:

Posted: Thu Aug 30, 2007 4:05 am

Newbie

Joined: Wed Aug 08, 2007 3:51 am
Posts: 6

Just want to say.

If i put the mappings on lazy="false", the NonUnique error returns.

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vishwas.tp

Post subject:

Posted: Thu Aug 30, 2007 4:40 am

Newbie

Joined: Thu Dec 21, 2006 5:18 am
Posts: 3
Location: Bangalore

Can you post the code which shows how you are passing Session object to getSystemCurrency method.

Last edited by vishwas.tp on Thu Aug 30, 2007 5:38 am, edited 1 time in total.

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No-one

Post subject:

Posted: Thu Aug 30, 2007 4:49 am

Newbie

Joined: Wed Aug 08, 2007 3:51 am
Posts: 6

Code:

   public IContentContainer getContentContainerByName(
         String contentContainerName, int languageid) {

      IContentContainer contentContainer = null;

      contentContainer = this.dao.getContentContainerByName(
            contentContainerName, languageid, HibernateUtil
                  .currentSession());

      return contentContainer;
   }

Code:

public static Session currentSession() {
      Session s = (Session) threadLocalSession.get();
      // Open a new Session, if this Thread has none yet
      if (s == null) {
         s = sessionFactory.openSession();
         threadLocalSession.set(s);
      }
      return s;
   }

In an aspect :

Code:

public Object wrapTransaction(ProceedingJoinPoint pjp) throws Throwable {
      Object retVal = null;
      Transaction trans = null;
       try{
          Session sess = HibernateUtil.currentSession();
          trans = HibernateUtil.currentTransaction(sess);
          // System.out.println("Transaction starts");

          retVal = pjp.proceed();

          trans = HibernateUtil.currentTransaction(sess);
          trans.commit();

          // System.out.println("Transaction commit");
       }catch(Exception e){

          Session sess = HibernateUtil.currentSession();
          trans = sess.beginTransaction();
          trans.rollback();

       }finally{

       }
       return retVal;
   }

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