No explicit meaning. If noone objects, go ahead.
Martijn
Eelco Hillenius wrote:
> Any more votes?
>
> Juergen Donnerstag wrote:
>
>> +1
>>
>> Juergen
>>
>> On 4/22/05, Eelco Hillenius <[EMAIL PROTECTED]> wrote:
>>
>>
>>> Hi,
>>>
>>> In project wicket-contrib-data, there is
>>> TransientObjectDetachableModel.
>>> I find this model very usefull, and think that this model (maybe with a
>>> different name?) should be in wicket-core or wicket-extensions as in my
>>> opinion the current way of making a custom detachable models is just
>>> too
>>> verbose.
>>>
>>> It handles the case where you want to load an object when onAttach is
>>> called, that object (transient) is returned on getObject, and onDetach,
>>> the object is set to null again. In my implementation, there is only
>>> one
>>> method to implement (load) opposed to the multiple methods when
>>> overriding AbstractDetachableModel.
>>>
>>> An example of it's usage:
>>>
>>> public final class HuidigeKlantModel extends
>>> TransientObjectDetachableModel
>>> {
>>> protected Object load()
>>> {
>>> FmoDemoSession session = (FmoDemoSession)WebSession.get();
>>> return session.getHuidigeKlant();
>>> }
>>> }
>>>
>>> And this is the implementation:
>>>
>>> import wicket.Component;
>>> import wicket.model.AbstractDetachableModel;
>>>
>>> /**
>>> * Model that makes working with detachable models a breeze again.
>>> * Holds a temporary, transient model object, that is set on 'onAttach'
>>> by calling
>>> * abstract method 'load', and that will be reset/ set to null on
>>> 'onDetach'.
>>> *
>>> * A usage example:
>>> * <pre>
>>> * TransientObjectDetachableModel venueListModel = new
>>> TransientObjectDetachableModel()
>>> * {
>>> * protected Object load()
>>> * {
>>> * return getVenueDao().findVenues();
>>> * }
>>> * };
>>> * </pre>
>>> *
>>> * @author Eelco Hillenius
>>> */
>>> public abstract class TransientObjectDetachableModel extends
>>> AbstractDetachableModel
>>> {
>>> /** temporary, transient object. */
>>> private transient Object tempModelObject;
>>>
>>> /**
>>> * Construct.
>>> */
>>> public TransientObjectDetachableModel()
>>> {
>>> super();
>>> }
>>>
>>> /**
>>> * @see wicket.model.AbstractDetachableModel#onAttach()
>>> */
>>> protected final void onAttach()
>>> {
>>> this.setObject(load());
>>> }
>>>
>>> /**
>>> * Loads and returns the (temporary) model object.
>>> * @return the (temporary) model object
>>> */
>>> protected abstract Object load();
>>>
>>> /**
>>> * @see wicket.model.AbstractDetachableModel#onDetach()
>>> */
>>> protected final void onDetach()
>>> {
>>> tempModelObject = null;
>>> }
>>>
>>> /**
>>> * @see
>>> wicket.model.AbstractDetachableModel#onGetObject(wicket.Component)
>>> */
>>> protected final Object onGetObject(Component component)
>>> {
>>> return tempModelObject;
>>> }
>>>
>>> /**
>>> * Sets the object.
>>> * @param object the object
>>> */
>>> protected final void setObject(Object object)
>>> {
>>> setObject(null, object);
>>> }
>>>
>>> /**
>>> * @see
>>> wicket.model.AbstractDetachableModel#onSetObject(wicket.Component,
>>> java.lang.Object)
>>> */
>>> protected final void onSetObject(Component component, Object object)
>>> {
>>> this.tempModelObject = object;
>>> }
>>>
>>> /**
>>> * @see wicket.model.IModel#getNestedModel()
>>> */
>>> public final Object getNestedModel()
>>> {
>>> return tempModelObject;
>>> }
>>> }
>>>
>>> Votes please?
>>>
>>> Eelco
>>>
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>>>
>>
>>
>>
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>>
>
>
>
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