Help coderanch get a
new server
by contributing to the fundraiser
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Getting a 'TransientObjectException' error message

 
Greenhorn
Posts: 6
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I'm getting a 'TransientObjectException' error message when I try to update a record from the 'reference' table in my database:

org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before flushing: org....domain.Author
at org.hibernate.engine.ForeignKeys.getEntityIdentifierIfNotUnsaved(ForeignKeys.java:219)
at org.hibernate.type.EntityType.getIdentifier(EntityType.java:397)
at org.hibernate.type.EntityType.replace(EntityType.java:253)
at org.hibernate.type.TypeFactory.replace(TypeFactory.java:482)
at org.hibernate.event.def.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:340)
at org.hibernate.event.def.DefaultMergeEventListener.entityIsDetached(DefaultMergeEventListener.java:267)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:120)
at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:53)
at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:677)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:661)
at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:665)
at org.springframework.orm.hibernate3.HibernateTemplate$23.doInHibernate(HibernateTemplate.java:817)

Here's part of the 'Reference' class:


and here's part of the 'Author' class:


Here's the code to update the specified 'Reference' object:

hibernateTemplateObj.merge(referenceObj);

Do I need to call the 'getPrimaryauthor()' method on the 'Reference' object first, and then save that 'Author' object prior to calling the 'merge' method ?
 
Vance Arocho
Greenhorn
Posts: 6
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I ended up getting the 'Author' object from the 'Reference' object and doing a lookup to see if the specified author already exists. If not, then I call the 'HibernateTemplate' object's 'save' method, passing it the 'Author' object. In either case, I set the 'Author' object on the 'Reference' object prior to calling the 'merge' method on the 'HibernateTemplate' object, passing in the 'Reference' object.
 
Bartender
Posts: 4116
72
Mac TypeScript Chrome Java Linux
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
You may have detached the reference to the Author instance before this? It may depends on how you manipulate these entities after being retrieved anyway...
 
Warning! Way too comfortable! Do not sit! Try reading this tiny ad instead:
We need your help - Coderanch server fundraiser
https://coderanch.com/t/782867/Coderanch-server-fundraiser
reply
    Bookmark Topic Watch Topic
  • New Topic