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POHibernate 4/Spring 3.2 NonUniqueObjectException
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Okay, i am very very very new to Hibernate/Spring. I had to upgrade existing code from Hibernate 2 - Hibernate 4 and Spring 1 - Spring 3. I keep getting this exception when trying to call saveOrUpdate when passing more than one message to the database (it works fine when I only send one message): <pre><code> org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session at org.hibernate.engine.internal.StatefulPersistenceContext.checkUniqueness(StatefulPersistenceContext.java:686) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performUpdate(DefaultSaveOrUpdateEventListener.java:293) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsDetached(DefaultSaveOrUpdateEventListener.java:239) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:109) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:728) at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:720) at org.hibernate.engine.spi.CascadingAction$5.cascade(CascadingAction.java:258) at org.hibernate.engine.internal.Cascade.cascadeToOne(Cascade.java:380) at org.hibernate.engine.internal.Cascade.cascadeAssociation(Cascade.java:323) at org.hibernate.engine.internal.Cascade.cascadeProperty(Cascade.java:208) at org.hibernate.engine.internal.Cascade.cascade(Cascade.java:165) at org.hibernate.event.internal.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:423) at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:264) at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193) at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:136) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:204) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:189) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:114) at org.hibernate.event.internal.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:90) at org.hibernate.internal.SessionImpl.fireSaveOrUpdate(SessionImpl.java:728) at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:720) at org.hibernate.internal.SessionImpl.saveOrUpdate(SessionImpl.java:716) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.hibernate.context.internal.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:352) at $Proxy9.saveOrUpdate(Unknown Source) </code></pre> I have googled till I am blue in the face! I have tried to use merge(). This does not give the exception, but merge inserts NULL values into the Database. I have tried to use evict(), flush(), same error. This is the method that causes the error: <pre><code>public void saveOrUpdate(Object obj) { Session session = null; SessionFactory sf = getSessionFactory(); try { try { session = sf.getCurrentSession(); } catch (Exception e) { session = sf.openSession(); } System.out.println("Object: " + obj); session.beginTransaction(); session.saveOrUpdate(obj); session.getTransaction().commit(); System.out.println("DONE"); } catch (Exception e) { e.printStackTrace(); } } </code></pre> Any help would be greatly appreciated!
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<java><spring><hibernate>
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Hibernate 4/Spring 3.2 NonUniqueObjectException
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