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problem in one-to-many mapping

indu iyengar
Ranch Hand

Joined: Jul 30, 2010
Posts: 115
Hi all,

am trying to store an object by using one-to-many relationship ...
it shows the exception as

basic relationship is ::
one student can join in multiple courses...

code for course

code for student


mapping file

please let me know what is wrong with my code ?


thanks ,
Indu
joy b chakravarty
Ranch Hand

Joined: May 16, 2011
Posts: 62

private List<String> courses;


shouldn't this be


Cheers, Joy [SCJP 1.4, SCBCD 5.0]
get high on alcohol, algorithm or both
Waswani Naresh
Ranch Hand

Joined: May 01, 2008
Posts: 66
Hi Indu,

As Joy mentioned , change the List<String> to List<Course> and it will solve your problem.

Regards,
Naresh


Naresh Waswani
indu iyengar
Ranch Hand

Joined: Jul 30, 2010
Posts: 115
Thanks guys for your replies.. I just changed as you said..

now , its not showing any exception..coming to success page without storing .

here am posting my hbm file and code to store the object..



indu iyengar
Ranch Hand

Joined: Jul 30, 2010
Posts: 115
Please help me friends.. didn't resolved yet..

I don't know exactly how to write the .hbm file for relationships..

 
It is sorta covered in the JavaRanch Style Guide.
 
subject: problem in one-to-many mapping