org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance beforeQuery flushing ?

+1 vote
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asked May 24, 2018 by Hitesh Garg (352 points)  

I am trying to save the object using hibernate and getting the below error -

org.hibernate.TransientPropertyValueException: object references an unsaved transient instance - save the transient instance beforeQuery flushing : xx.yy.zzz.ClassName.parentNode -> xx.yy.zzz.ClassName

How to solve this issue?

1 Answer

+1 vote
answered May 24, 2018 by Rahul Singh (543 points)  
selected May 24, 2018 by Hitesh Garg
 
Best answer

This means you are using a hibernate mappings like @OneToOne or @OneToMany.
Now for xml configuration you should include cascade="all" or for class based annotations cascade=CascadeType.ALL on your collection mapping.

This happens because you have a collection in your entity which has some elements which are not persisted in the database yet and hence it gives the error.
By mentioning the cascading types in your entity you tell hibernate to save all the child entities on saving the parent entity.

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