Migration from 2.x to 3.05

balderman · **Joined:** Fri Feb 24, 2006 12:52 pm **Posts:** 30

Hibernate version:
3.05

Full stack trace of any exception that occurs:
Caused by: org.hibernate.PropertyValueException: not-null property references a null or transient value: com.bmc.idm.cmplmgr.bo.common.PolicyImpl.name
at org.hibernate.engine.Nullability.checkNullability(Nullability.java:72)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:236)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:160)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:108)
at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:157)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:104)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:544)
at org.hibernate.engine.Cascades$6.cascade(Cascades.java:176)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:771)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascade(Cascades.java:847)
at org.hibernate.event.def.AbstractSaveEventListener.cascadeBeforeSave(AbstractSaveEventListener.java:332)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:214)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:160)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:108)
at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:157)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:104)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:544)
at org.hibernate.engine.Cascades$6.cascade(Cascades.java:176)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:771)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascadeCollection(Cascades.java:895)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:792)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascade(Cascades.java:847)
at org.hibernate.event.def.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:264)
at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:149)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:104)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:544)
at org.hibernate.engine.Cascades$6.cascade(Cascades.java:176)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:771)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascadeCollection(Cascades.java:895)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:792)
at org.hibernate
2006-04-27 17:55:14,736 INFO [STDOUT] .engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascade(Cascades.java:847)
at org.hibernate.event.def.DefaultMergeEventListener.cascadeOnMerge(DefaultMergeEventListener.java:264)
at org.hibernate.event.def.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:223)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:102)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:54)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:535)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:539)

Name and version of the database you are using:
Oracle 9

--------------------------------------------------------------------------------
I am migrating from 2.x to 3.05 using the instructions in http://www.hibernate.org/250.html#A6

I replaced the calls to seesion.saveOrUpdateCopy() with session.merge() ang I get the exception above.

Any know issue with this?

Thanks
Avishay

tenwit · **Joined:** Thu Dec 23, 2004 9:08 pm **Posts:** 2008

Session.merge() returns the persitent version of the passed-in object, and that persistent version should be used from then on. This is a bug:

Code:

session.merge(child);
parent.getChildren().add(child);
session.merge(parent);

This code tries to save a transient child into parent's children, and that's going to cause problems, seeing as there's now a persistent version of child. The correct code is

Code:

child = session.merge(child);
parent.getChildren().add(child);
session.merge(parent);

Go through your code looking for these sorts of bugs. Resolving them should get you going again.

balderman · **Joined:** Fri Feb 24, 2006 12:52 pm **Posts:** 30

Thanks

I will check it.