I should clarify that last paragraph: I don't know Wicket well enough
to be sure you haven't found a bug and of course I don't know your
code. I've just run into this often enough in Hibernate to make an
educated guess. Let us know how it works out.
-Ryan
On Feb 18, 2007, at 2:08 AM, Ryan Holmes wrote:
> org.hibernate.NonUniqueObjectException is a really common problem. My
> guess is that the DataStoreUser is being loaded once to pass it into
> the page constructor and again by the LoadableDetachableModel within
> the same Hibernate session. Same persistent object loaded into two
> separate instance variables in the same (Hibernate) session -- boom,
> NonUniqueObjectException.
>
> There are a couple of ways to fix this. The "correct" solution is to
> avoid loading the object more than once in the first place. For
> instance, maybe you could take a user id instead of a user object
> into your page constructor to remove one of the load operations. The
> standard solution is to use Session.merge() instead of, say,
> Session.saveOrUpdate() (I assume you're getting this exception when
> the Hibernate session flushes).
>
> In any event, this is happening because LoadableDetachableModel is
> working as intended and thereby revealing one of Hibernate's many
> "quirks" -- not because of a problem in Wicket.
>
>
> -Ryan
> On Feb 10, 2007, at 2:31 AM, Matthew Kwong wrote:
>
>>
>> Hi fellows,
>>
>> Last time I asked how to use chain in CompoundPropertyModel with
>> LoadableDetachableModel, it worked since my page has no form (no
>> submit).
>> This time, I make another page and try to use the chain again, and
>> hibernate
>> throws org.hibernate.NonUniqueObjectException when I submit the form.
>>
>> Caused by: org.hibernate.NonUniqueObjectException: a different
>> object with
>> the same identifier value was already associated with the session:
>> [datastore2.model.DataStoreRole#1]
>>
>> My Panel:
>>
>> public UserDetail(String id, DataStoreUser user, final Panel
>> prevPanel) {
>> super(id);
>> add(new FeedbackPanel("feedback"));
>>
>> add(new Link("back") {
>> public void onClick() {
>> getParent().replaceWith(prevPanel);
>> }
>> });
>>
>> Form form = new Form("form") {
>> protected void onSubmit() {
>> DataStoreUser user = (DataStoreUser)
>> this.getModelObject();
>> try {
>> getDelegate().saveUser(user);
>> info("You have saved the user profile: " +
>> user.getFullname() + ".");
>> } catch (Exception e) {
>> e.printStackTrace();
>> error("Your user profile state is stale
>> (someone has
>> updated the same user profile while you are on this page). Please
>> press BACK
>> and come back.");
>> }
>> }
>> };
>>
>> form.setModel(new CompoundPropertyModel(new
>> LoadableDataStoreUserModel(getDelegate().getDataStoreUser(user.getId
>> ()))));
>> form.add(new Label("id"));
>> form.add(new Label("username"));
>> form.add(new RequiredTextField("firstname"));
>> form.add(new
>> TextField("lastname").setConvertEmptyInputStringToNull(false));
>> form.add(new Label("email"));
>> form.add(new Palette("roles", new
>> Model((Serializable)getDelegate().getDataStoreRoles()), new
>> RoleChoiceRenderer(), 10, true));
>> add(form);
>> }
>>
>> Is LoadableDetachableModel working for form processing? Because it is
>> working if I only have
>> form.setModel(new
>> CompoundPropertyModel(getDelegate().getDataStoreUser(user.getId())));
>>
>> The reason why i want this loadable since I want to update the page
>> with
>> "F5" refresh button again if someone has changed the same user in
>> another
>> computer.
>>
>> Thank you :)
>> Matthew Kwong
>> --
>> View this message in context: http://www.nabble.com/
>> LoadableDetachableModel-in-form-processing-tf3204839.html#a8899449
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
>> ---------------------------------------------------------------------
>> -
>> ---
>> Using Tomcat but need to do more? Need to support web services,
>> security?
>> Get stuff done quickly with pre-integrated technology to make your
>> job easier.
>> Download IBM WebSphere Application Server v.1.0.1 based on Apache
>> Geronimo
>> http://sel.as-us.falkag.net/sel?
>> cmd=lnk&kid=120709&bid=263057&dat=121642
>> _______________________________________________
>> Wicket-user mailing list
>> Wicket-user@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/wicket-user
>
>
> ----------------------------------------------------------------------
> ---
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to
> share your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?
> page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Wicket-user mailing list
> Wicket-user@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/wicket-user
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Wicket-user mailing list
Wicket-user@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/wicket-user
