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JavaRanch » Java Forums » Databases » Object Relational Mapping
Bookmark "org.hibernate.NonUniqueObjectException" Watch "org.hibernate.NonUniqueObjectException" New topic
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org.hibernate.NonUniqueObjectException

indu iyengar
Ranch Hand

Joined: Jul 30, 2010
Posts: 115
Hi all, when I started to use relationships, it ends up with different types of exceptions.. please give tell me what is key element and why index as the element in list ?

am using 3 tables..
student (studID primary key),courses(courseID primary key) and student-course(studID and courseID as columns )..

the student can select different courses.
so one student with


mapping file..

when I call session.save(obj).. then

thanks ,
Indu
 
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