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From Nuno Santos <nsan...@electroplus.pt>
Subject Re: Accessing Hibernate Class + Session Issues
Date Tue, 03 Feb 2004 15:25:25 GMT
You need to type cast to access the methods. Try :
	((UserDetail)userDetails).getFirstName()

On Tue, 2004-02-03 at 15:14, beyaNet Consultancy wrote:
> Hi,
> 
> I have 2 related questions which I would like to throw into the arena
> if I may.
> 
> 
> 1. I have created a user class in Hibernate which I return into XSP as
> an object like so:
> 
> 
> 	<color><param>7676,0F0F,5050</param>public</color> Object
> getUserdetails (<color><param>7676,0F0F,5050</param>int</color>
> user_id)
> 
> 	{
> 
> 		
> 
> 		Integer userID = <color><param>7676,0F0F,5050</param>new</color>
> Integer(user_id);
> 
> 		Object userDetails;
> 
> 		
> 
> 	    <color><param>7676,0F0F,5050</param>try</color> {
> 
> 			HibernateUtil Util =
> <color><param>7676,0F0F,5050</param>new</color> HibernateUtil();
> 
> 			Session session = Util.currentSession();
> 
> 
> 			Transaction transaction = session.beginTransaction();
> 
> 			
> 
> 			<color><param>2323,6E6E,2525</param>//Get User details</color>
> 
> 			User user =
> (User)session.load(test.User.<color><param>7676,0F0F,5050</param>class</color>,
> userID);
> 
> 			
> 
> 			<color><param>2323,6E6E,2525</param>//Return user details object</color>
> 
> 			userDetails = user;
> 
> 			
> 
> 			transaction.commit();
> 
> 			Util.closeSession();
> 
> 			
> 
> 			} <color><param>7676,0F0F,5050</param>catch</color>
> (HibernateException e) {
> 
> 		    <color><param>7676,0F0F,5050</param>throw</color>
> <color><param>7676,0F0F,5050</param>new</color>
> RuntimeException(<color><param>8989,1313,1515</param>"Exception in
> Hibernate:: "</color> + e.getMessage(), e);
> 
> 	    }
> 
> 		
> 
> 		<color><param>7676,0F0F,5050</param>return</color> userDetails;
> 
> 	}
> 
> 
> As the User class getters are populated with user information, from
> with in the class I can do user.getFirstName() to retrieve the users
> firstname.
> 
> 
> In my XSP page I read the object in as:
> 
> 
> User2  usr2 = new User2();<fixed>
> 
> </fixed>Object userDetails =
> usr2.getUserdetails(<color><param>0000,0000,FFFF</param>42</color>);
> 
> 
> The problem arises when I try to access the object properties which I
> tried as :
> 
> 
> String s = userDetails.getFirstName();
> 
> 
> which gives me a language exception error: //start error (lines
> 171-171) "The method getFirstName() is undefined for the type Object"
> String s = userDetails.getFirstName(); // end error
> 
> 
> How do I access the object to retrieve the user details?
> 
> 
> 2. Persisting the object in a Session.
> 
> 
> Could I use session.setAttribute("userDetails", object)? If so, how
> would I access the object properties in this instance?
> 
> 
> many thanks in advance
-- 
Nuno Santos <nsantos@electroplus.pt>


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