Same can be said for ajax update behaviour. See for example:
TextField password = new TextField("password");
AjaxFormComponentUpdatingBehavior ajaxBehaviour =
new AjaxFormComponentUpdatingBehavior("onblur") {
protected void onUpdate(AjaxRequestTarget target) {
System.out.println("ajaxUpdated");
}
};
password.add(ajaxBehaviour);
The output:
-----------------
getPassword
setPassword <--------------- here
ajaxUpdated
Should I avoid directly using persistent objects for models? What do
you suggest? I could serialize an (hibernate)detached object as a form
field and then re-attach it on form submission. Or I could load and
(hibernate)detach the object on every request (same as I'm doing now,
but detaching from session immediately after loading). Or I could use
a plain dto.
Cheers,
Carlos
On 4/5/07, Carlos Pita <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I'm a bit concerned about onSelectionChanged event effectively binding
> my model. Suppose my model is a LoadableDetachableModel that is loaded
> from the repository every time. Normally (upon form submission)
> nothing will be bound after successfully passing validation; then
> additional logic will run inside a transactional service and a
> rollback thrown if something goes wrong (take into account that I'm
> using session-in-view). But if a property of my model object is bound
> outside this controlled scenario, the change will be persisted upon
> session correct finalization, even if the object is invalid. I
> observed that during onSelectionChanged execution the changed property
> is effectively bound, so how should I deal with this?
> Here is an example with a simple User that has a sex property allowing
> the usual two values, note how setSex is called during execution of
> onSelectionChanged:
>
>
> The ouput for onSelectionChanged
> --------------------------------------------------
>
> loadSexModel
> getSex
> setSex <------- here
> getSex
> selectionChanged
> getSex
>
> The user domain entity.
> ----------------------------------
>
> public class User implements Serializable {
> [...]
> private String sex;
>
> [...]
> public String getSex() {
> System.out.println("getSex");
> return sex;
> }
>
> public void setSex(String sex) {
> System.out.println("setSex");
> this.sex = sex;
> }
> }
>
> The sex choice.
> ----------------------
>
> DropDownChoice sex = new DropDownChoice("sex", getSexModel()) {
> protected void onSelectionChanged(Object newSelection) {
> System.out.println("selectionChanged");
> }
> protected boolean wantOnSelectionChangedNotifications() {
> return true;
> }
> };
>
> The sex model.
> ---------------------
>
> private IModel getSexModel() {
> return new LoadableDetachableModel() {
> protected Object load() {
> System.out.println("loadSexModel");
> return Arrays.asList("Masculine", "Feminine");
> }
> };
> }
>
>
> Cheers,
> Carlos
>
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