http://wicketinaction.com/2008/09/building-a-smart-entitymodel/
notice the deatch() implementation
-igor
On Thu, Jan 22, 2009 at 8:05 AM, pieter claassen <pie...@claassen.co.uk> wrote:
> I am using wicket 1.3.5 and db4o 7.4.63.11890.
>
> My objects are being passed between pages using a subclass of
> LoadableDetachableModel (see below)
>
> My problem is:
> 1. I edit an object on PageA
> 2. I use the back button and then re-submit the form I edited and now I have
> two objects in the database.
>
> Any ideas on why this is happening?
>
> Cheers,
> Pieter
>
>
> package com.musmato.wicket.model;
>
> import org.apache.wicket.model.LoadableDetachableModel;
>
> import com.musmato.dao.BaseFactory;
>
> public abstract class BaseWebModel<T> extends LoadableDetachableModel {
>
> private static final long serialVersionUID = 1L;
>
> protected Long id;
>
> public abstract Class<T> getBaseClass();
>
> public abstract BaseFactory<T> getFactory();
>
> public BaseWebModel(Long id) {
> this.id = id;
> }
>
> public BaseWebModel(T object) {
> this.id = getFactory().getID(object);
> }
>
> @Override
> protected Object load() {
>
> if (id == null) {
> return getFactory().getNewObject();
> }
>
> return getFactory().getById(id);
> }
>
> }
>
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