+1 Don't know if my vote counts or not, but anyway.
I'm one of those users that had trouble with the ambiguity between model
object (as in the IModel instance) and modelObject (the object contained
by the model). Worse, In my project's team all the modelObjects were
classes with the naming convention XXXModel so we had IModels containing
modelObjects that were XXXModels. If that isn't an example of bad
naming, then what is? :D
In my opinion models containing values that are (of course) objects is
much clearer and would prevent this kind of madness. Luckily Eclipse has
great refactoring features, so XXXModel soon became XXXModelObject.
Matthijs
Eelco Hillenius wrote:
> -1. Regardless of whether the change is for the better, it will break
> way too much existing code not to mention the tutorials on the
> internet etc.
>
> Eelco
>
>
> On 1/22/07, Jonathan Locke <[EMAIL PROTECTED]> wrote:
>
>> i'd like us to vote on changing IModel to this in 2.0 (i know it's very
>> late, but please at least read my argument below and think about it for a
>> moment):
>>
>> public interface IModel<V> extends IDetachable
>> {
>> V getValue();
>> void setValue(V value);
>> }
>>
>> we would also change getModelObject() to getValue() as well as any other
>> related methods like getModelObjectAsString() to getValueAsString() (or
>> valueAsString() if preferred). there might be naming conflicts somewhere or
>> other problems, but i don't know of any offhand.
>>
>> i realize we're about to enter beta, but i feel like this matters since our
>> users have been telling us for some time now that models are hard to
>> understand and it seems likely that the term 'model object' (as derived from
>> the IModel interface naming) is really not helping anyone to understand
>> things. in fact, that term is actually ambiguous since the object
>> implementing IModel might be informally understood to be the model object
>> (which is not what we mean).
>>
>> i realize this change would affect the book and so eelco and martijn may
>> very understandably not want to deal with that so i won't be upset if this
>> change can't happen. but i'd like to see it if it's possible, so at any
>> rate, i'm +1 and i think igor says he's +0.
>>
>>
>> Jonathan Locke wrote:
>>
>>> We did already break the model contract with 1.2/1.3... would
>>> get/setObject->get/setValue be a huge hassle? Or am I spacing something
>>> here?
>>>
>>>
>>> Jonathan Locke wrote:
>>>
>>>> Made a few more changes. I think it's getting shorter/better.
>>>>
>>>> My one regret looking at this documentation is that I wish
>>>> IModel.get/setObject were actually IModel.get/setValue. Or was there
>>>> some crazy reason we didn't do this? It would be much easier and more
>>>> natural to talk about a model's value this way...
>>>>
>>>>
>>>> Jonathan Locke wrote:
>>>>
>>>>> Nice work. I made a few small changes and rephrased the first paragraph
>>>>> to be even more specific. Maybe it could be tweaked a little more, but
>>>>> I think this sums it up better now:
>>>>>
>>>>> "In Wicket, a model holds a value for a component to display and/or
>>>>> edit. How exactly this value is held is determined by a given model's
>>>>> implementation of the wicket.model.IModel interface. This interface
>>>>> decouples a component from the data which forms its value. This in turn
>>>>> decouples the whole Wicket framework from any and all details of model
>>>>> storage, such as the details of a given persistence technology. As far
>>>>> as Wicket itself is concerned, a model is anything that implements the
>>>>> IModel interface, no matter how it might do that."
>>>>>
>>>>> It does feel like this is the best place to show the IModel interface
>>>>> since readers will be wondering what it looks like already. It sounds
>>>>> scarier than it is, so why delay?
>>>>>
>>>>>
>>>>> Loren Rosen wrote:
>>>>>
>>>>>> I've saved my rewritten version. (See
>>>>>> http://cwiki.apache.org/confluence/display/WICKET/Working+with+Wicket+models)
>>>>>> Comments by everyone from experts to complete newbies
>>>>>> are most welcome. Doubtless there are things that are confusing or
>>>>>> flat-out wrong.
>>>>>>
>>>>>> In addition to rephrasing or rewriting a lot of material, and adding a
>>>>>> few things, I
>>>>>> excised some details I thought would be distracting for a beginner.
>>>>>> Some of this
>>>>>> material is, I think, still useful, perhaps in a slightly more advanced
>>>>>> "More about
>>>>>> Models" page.
>>>>>>
>>>>>>
>>>>>> igor.vaynberg wrote:
>>>>>>
>>>>>>> go ahead and edit the page...the wiki is versioned i think so we can
>>>>>>> always
>>>>>>> roll back.
>>>>>>>
>>>>>>> when you are done with the majority let us know and we will review the
>>>>>>> changes.
>>>>>>>
>>>>>>> -igor
>>>>>>>
>>>>>>>
>>>>>>> On 1/15/07, Loren Rosen <[EMAIL PROTECTED]> wrote:
>>>>>>>
>>>>>>>> When I first started using Wicket I found the information on models a
>>>>>>>> little
>>>>>>>> hard to follow. So now I'd like to revise the "Working with Wicket
>>>>>>>> models"
>>>>>>>> wiki page
>>>>>>>> (
>>>>>>>> http://cwiki.apache.org/confluence/display/WICKET/Working+with+Wicket+models
>>>>>>>> )
>>>>>>>> to improve this. I'd be happy to outline what I think should be
>>>>>>>> improved
>>>>>>>> (though this is a little hard to do in detail short of simply
>>>>>>>> annotating
>>>>>>>> the
>>>>>>>> page) or I can just plunge ahead and draft a revised page. If I do
>>>>>>>> the
>>>>>>>> latter I could potentially post it somewhere else for comment instead
>>>>>>>> of
>>>>>>>> directly replacing the existing page on the wiki. Perhaps we need a
>>>>>>>> 'in
>>>>>>>> draft' part of the wiki for working on long pages like this one.
>>>>>>>>
>>>>>>>> Actually, another alternative is for me to gradually introduce
>>>>>>>> changes to
>>>>>>>> the wiki page over a span of days, giving people a chance to comment
>>>>>>>> as I
>>>>>>>> go.
>>>>>>>> --
>>>>>>>> View this message in context:
>>>>>>>> http://www.nabble.com/revising-the-%22Working-with-Wicket-models%22-page-tf3016921.html#a8378321
>>>>>>>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>>>>>>>
>>>>>>>>
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>>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>> --
>> View this message in context:
>> http://www.nabble.com/revising-the-%22Working-with-Wicket-models%22-page-tf3016921.html#a8516354
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
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--
Matthijs Wensveen
Func. Internet Integration
W http://www.func.nl
T +31 20 4230000
F +31 20 4223500
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