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TransientObjectException: object references an unsaved transient instance

 
Shajid Johnny
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Dear members,

I am new to Hibernate.
I have been trying to build an application that has the modules: Add/Edit/Delete of Categories, SubCategories, Articles.

SubCategory has a Many-to-one association with Category and Article has a many-to-one association with SubCategory.

here is the hbm.xml files:

SubCategory.hbm.xml


Article.hbm.xml


Thus I have done the unidirectional many-to-one associations.
Now, I can successfully Add/Edit/Delete both Category and SubCategory, but when I try to add an Article, it displays the following Exception:
javax.servlet.ServletException: org.hibernate.TransientObjectException: object references an unsaved transient instance - save the transient instance before fl

could you please give me a solution to the problem??
 
Ankit Garg
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Can you show us the code which is throwing the exception. Is the SubCategory object which the Article references to saved in the database??
 
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