RE: java.util.Vector cannot be cast to entity bean

From: Eve Pokua <gorgeous65_at_msn.com>
Date: Sat, 17 Oct 2009 18:27:20 +0100

Hassan,

This' what the method is -

//To retrieve all bales
 public List<Baleent> findAllBales(){
 List<Baleent> baleent=null;

 try{
 baleent=(List<Baleent>)em.createNamedQuery("getAllBales").getResultList();

 return baleent;
 }catch (Exception ex) {

 System.err.println("Can not get all bales");
 throw new EJBException(ex);
 }
 }//end of All bales

Collects data from the DB.

I used to use the jsp for loop to display data till I changed everything into

display tag -

<c:forEach items="${baleent}" var="baleent">

eve

> Date: Sat, 17 Oct 2009 09:40:41 -0700
> From: hassan.schroeder_at_gmail.com
> To: users_at_glassfish.dev.java.net
> Subject: Re: java.util.Vector cannot be cast to entity bean
>
> On Sat, Oct 17, 2009 at 9:17 AM, Eve Pokua <gorgeous65_at_msn.com> wrote:
>
> > I managed to get things working.
> > When I change the useBean scopet to application or requestion-
> >
> > <jsp:useBean id="baleent" scope="session" class="entityJB.Baleent" />
> >
> > But then the data I want to display is a null.
>
> ? That doesn't sound like my idea of "working" :-)
>
> > I am trying to establise why the data is a null. It looks like data is
> > not being forwarded from my servlet to my jsp. IN my servlet I have -
>
> You seem fundamentally confused. Your code below:
>
> > baleent=baleBeanRemote.findAllBales();
> > session.setAttribute("baleent",baleent);
>
> :: is setting a session attribute, not "forwarding" anything.
>
> When the JSP page is passed the request, it needs to retrieve the
> attribute from the session. Changing the JSP to look for a "baleent"
> *request* or *application* attribute will certainly return null unless
> you're setting that somewhere else.
>
> But this is dancing around the original problem. I'll ask again --
> what does baleBeanRemote.findAllBales() return?
>
> --
> Hassan Schroeder ------------------------ hassan.schroeder_at_gmail.com
> twitter: @hassan
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe_at_glassfish.dev.java.net
> For additional commands, e-mail: users-help_at_glassfish.dev.java.net
>

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Hassan, 
  
This' what the method is - 
  
//To retrieve all bales         public List<Baleent> findAllBales(){             List<Baleent> baleent=null; 
  try{                    baleent=(List<Baleent>)em.createNamedQuery("getAllBales").getResultList(); 
                 return baleent;                 }catch (Exception ex) { 
                    System.err.println("Can not get all bales");             throw new EJBException(ex);         }         }//end of All bales 
  
Collects data from the DB. 
  
I used to use the jsp for loop to display data till I changed everything into 
display tag - 
  
<c:forEach items="${baleent}" var="baleent"> 
  
eve 
   > Date: Sat, 17 Oct 2009 09:40:41 -0700 > From: hassan.schroeder@gmail.com > To: users@glassfish.dev.java.net > Subject: Re: java.util.Vector cannot be cast to entity bean > > On Sat, Oct 17, 2009 at 9:17 AM, Eve Pokua <gorgeous65@msn.com> wrote: > > > I managed to get things working. > > When I change the useBean scopet to application or requestion- > > > > <jsp:useBean id="baleent" scope="session" class="entityJB.Baleent" /> > > > > But then the data I want to display is a null. > > ? That doesn't sound like my idea of "working" :-) > > > I am trying to establise why the data is a null.  It looks like data is > > not being forwarded from my servlet to my jsp. IN my servlet I have - > > You seem fundamentally confused. Your code below: > > >                                baleent=baleBeanRemote.findAllBales(); > >                                   session.setAttribute("baleent",baleent); > > :: is setting a session attribute, not "forwarding" anything. > > When the JSP page is passed the request, it needs to retrieve the > attribute from the session. Changing the JSP to look for a "baleent" > *request* or *application* attribute will certainly return null unless > you're setting that somewhere else. > > But this is dancing around the original problem. I'll ask again -- > what does baleBeanRemote.findAllBales() return? > > -- > Hassan Schroeder ------------------------ hassan.schroeder@gmail.com > twitter: @hassan > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscribe@glassfish.dev.java.net > For additional commands, e-mail: users-help@glassfish.dev.java.net > <hr />Download Messenger onto your mobile for free. <a href='http://clk.atdmt.com/UKM/go/174426567/direct/01/' target='_new'>Learn more.</a></body>
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