Hi,

I have requirement to update Many-to-one relationship ,

For instance , Books belong to one author >> Book (*- 1) Author1

I need to update Book1 to point to another Author1.
I have tried using em.merge(Book) with CascadeType.MERGE but it doesnt work.
It should work.

There is no exception generated , but the data is also not updated in
database.

Can anyone explain me how to update Book1 to point to another Author.

Thanks in advance

-H



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