Igor! Thats a bad example. The user object should be in the websession
but the user object should be in the requestcycle. Because the
websession object can be hit by multiple request (threads)
On 1/7/08, Igor Vaynberg <[EMAIL PROTECTED]> wrote:
> class MySession extends WebSession {
> private Long userId;
> private transient User user;
>
> public SYNCHRONIZED void setUser(User user) {
> user=user;
> userId=(user==null)?null:user.getId();
> }
>
> public SYNCHRONIZED void getUser() {
> if (user==null) {
> if (userId!=null) {
> user=getHibernateSession().load(User.class, userId);
> }
> }
> return user;
> }
>
> protected void onDetach() {
> user=null;
> }
> }
>
> -igor
>
> On Jan 7, 2008 11:11 AM, Dan Kaplan <[EMAIL PROTECTED]> wrote:
> > Is there an example somewhere that shows how to do this? Or can someone
> > paste a snippet here of how to do this? I assume a lot of webapps have
> the
> > concept of a User object.
> >
> > -----Original Message-----
> > From: Martijn Dashorst [mailto:[EMAIL PROTECTED]
> > Sent: Saturday, January 05, 2008 5:17 AM
> > To: users@wicket.apache.org
> > Subject: Re: Wicket Session and threading
> >
> >
> > If you use hibernate, this is not recommended... An entity can only be
> > part of one Hibernate Session, and storing the instance in the wicket
> > session will share it across threads, and hence you'll get hibernate
> > exceptions.
> >
> > Note that this may not be only a problem in Hibernate, but can also be
> > a problem in other db frameworks.
> >
> > So do what Johan described and you will be safe...
> >
> > Martijn
> >
> > On Jan 5, 2008 3:54 AM, Eelco Hillenius <[EMAIL PROTECTED]> wrote:
> > > On Jan 5, 2008 5:15 AM, Dan Kaplan <[EMAIL PROTECTED]> wrote:
> > > > Yeah that makes sense. Since we're sorta on the topic, I thought I
> > would
> > > > ask this question. As the User object goes from being initially
> > registered
> > > > to its profile being edited, how does one update the User in the
> session
> > and
> > > > the db simultaneously?
> > > >
> > > > Here's a scenario: A user registers with your website and later adds
> a
> > > > signature that is to show up on every post he makes.
> > > >
> > > > Do you add an instance of a UserService to your WebSession and then
> have
> > > > this in it:
> > > >
> > > > private User user;
> > > >
> > > > public synchronized void setUser(User updatedUser) {
> > > > userService.updateUser(updatedUser);
> > > > this.user = updatedUser;
> > > > }
> > > >
> > > > public synchronized User getUser() {
> > > > return this.user;
> > > > }
> > > >
> > > > ? Cause I've been doing something like that. Is there a better way
> to
> > go
> > > > about this?
> > >
> > >
> > > Looks fine to me.
> > >
> > > Eelco
> > >
> > >
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> > >
> > >
> >
> >
> >
> > --
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> > Get it now: http://www.apache.org/dyn/closer.cgi/wicket/1.3.0
> >
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