well I am not sure about it being a common problem.
I am pasting the code which works for me..
try {
//Get the data from user's form
String id = (String) request.getParameter("id");
//create an em.
//Since the em is created inside a transaction, it is associsated with
//the transaction
utx.begin();
em = emf.createEntityManager();
Person p=em.find(Person.class,id);
if(p!=null)
{
em.remove(p);
}
utx.commit();
request.getRequestDispatcher("ListPerson").forward(request, response);
} catch (Exception ex) {
throw new ServletException(ex);
} finally {
//close the em to release any resources held up by the persistebce provider
if(em != null) {
em.close();
}
}
Hope it is of some help.
akshay.
On Jun 5, 2009 4:54pm, Biljana Biljana <biljana_b...@yahoo.com> wrote:
> Hi Mark!
> this problem occured to everyone if you searche in groupe mail list. They
> said that we can't use remove() method, you must in delete servlet have
> sql statement which will delete person in database that you want to
> delete.
> regards,
> Biljana
> --- On Fri, 6/5/09, aks.it...@gmail.com aks.it...@gmail.com> wrote:
> From: aks.it...@gmail.com aks.it...@gmail.com>
> Subject: [java ee programming] Re: Regarding JPA Basics Lab-HomeWork.
> To: "mak pandian" kolluranipand...@gmail.com>,
> java-ee-j2ee-programming-with-passion@googlegroups.com
> Date: Friday, June 5, 2009, 7:28 AM
> Hi mak,
> It would be easier to help you,if you could paste the code where u have
> the logic to delete the record.
> akshay
> On Jun 5, 2009 9:55am, mak pandian kolluranipand...@gmail.com> wrote:
> > Hello ,
> >
> > Now i am doing JPA Basics Home work.I done delete option for every
> records in the table.My logic is described below.
> >
> > When the user click the delete option,The servlet DeleteServlet is
> invoked.
> >
> > In delete servlet,I get id from request parameter.
> >
> > And then i did in the same way what was in the lab for insert record.
> >
> > But after that while building i dont get any error even warning.
> >
> > While running application i get errors like" remove() method could not
> be used "
> >
> >
> >
> > How can i fix it?
> >
> >
> >
> > Does some one has different
> logic to do?if so ,share it with me.
> >
> >
> >
> > Thanking You.
> >
> >
> > --
> > Regards
> > KolluraniPandian A
> > (Living in Virtual World)
> >
> >
> >
> >
> >
> >
>
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