Here's some stuff that might be relevant if you want to use a ListView
inside a form:
http://wicketinaction.com/2008/10/building-a-listeditor-form-component/
A quote from the page "A common question on Wicket mailing lists is
“Why doesn’t my ListView work as expected in a Form?”. There can be
many possible answers, but the core issue is that ListView was never
designed to work as a form component"
br, Juha
On Fri, Aug 14, 2009 at 2:14 AM, Dane Laverty<danelave...@gmail.com> wrote:
> In case anyone else ends up with a similar error, here's the solution I
> ended up using. (Yes, I'm sure it's an awful hack, but right now it works
> for me.)
>
> First, I swapped the Set/List implementation I was using in Employer Info
> [1], since I realized that the items affected in my previously generated
> List weren't getting passed back to the Set. Then I passed my ListView the
> list directly, rather than wrapped in a model [2]. The AjaxSubmitLink adds
> to that list, by way of the ListView's model [3]. Then, when the user wanted
> to save the updated List, I had to explicitly re-set it in the Form model
> [4].
>
> That resolved my IndexOutOfBoundsException issue. However, when I tried to
> persist the list, I got an org.hibernate.NonUniqueObjectException. This is
> my first Hibernate/Wicket project, so I'm pretty clueless about that one.
> Searching the list, I found a post by Eelco [5] that mentioned using
> Hibernate's Session.evict(), so I implemented that in the persist function
> of the DAO [6]. Now it appears to be working!
>
> ------
>
> [1] - public class EmployerInfo extends PersonInfoImpl {
> ...
> List<ContactPoint> contactPointsList;
>
> public List<ContactPoint> getContactPoints() {
> return contactPointsList;
> }
>
> public void setContactPoints(List<ContactPoint> contactPointsList) {
> this.contactPointsList = contactPointsList;
> }
>
> public Set<ContactPoint> getContactPointsSet() {
> return new HashSet<ContactPoint>(contactPointsList);
> }
>
> public void setContactPointsSet(Set<ContactPoint> contactPointsSet) {
> List<ContactPoint> list = new
> ArrayList<ContactPoint>(contactPointsSet);
> Collections.sort(list);
> contactPointsList = list;
> }
> }
>
>
>
> [2] - final ListView<ContactPoint> contactPointsListView = new
> ListView<ContactPoint>("contactPoints",
> employerInfoModel.getObject().getContactPoints()) {...};
>
>
> [3] - new AjaxSubmitLink("addContactLink", this) {
> �...@override
> public void onSubmit(AjaxRequestTarget target, Form<?> form)
> {
> contactPointsListView.getModelObject().add(new
> ContactPointImpl());
> target.addComponent(contactPointsContainer);
> }
>
>
> [4] - new SubmitLink("saveContactPoints") {
> �...@override
> public void onSubmit() {
> super.onSubmit();
>
> employerInfoModel.getObject().setContactPoints(contactPointsListView.getModelObject());
>
> personInfoDao.persistOrMerge(employerInfoModel.getObject());
> info("Your account has been updated.");
> }
>
> [5] - http://www.nabble.com/delete-onSubmit-td22839614.html#a22839614
>
> [6] - public void persistOrMerge(PersonInfo personInfo) {
> getHibernateTemplate().evict(personInfo);
> try {
> getHibernateTemplate().saveOrUpdate(personInfo);
> } catch (Exception e) {
> getHibernateTemplate().merge(personInfo);
> }
> }
>
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