I personally don't mind changes that cause me migration pain if they
actually make it better. I'm looking forward to trying it out.
Would it be possible to deploy the snapshots some place so I don't
have to go through the build pain?
- Brill Pappin
On 24-Jun-08, at 1:12 AM, Igor Vaynberg wrote:
development of the 1.4 branch has been quiet lately, this is because
the core team has been busy working on an alternative way of
generifiing the framework. an early result of that effort can be found
here [1]. The key difference in [1] is that we have decoupled the
component from the type of the model.
here is the list of major differences:
(1) only components that use their model have a generic type
(components you are likely to call getmodel/getmodelobject on as a
user). so far these are link,form,formcomponent
subclasses,listview,listitem,(other repeaters will follow soon). this
allows for typesafety where it makes sense, and eliminates a ton of
noise from code. we will generify others upon request if a good
usecase is provided and we think it is widely applicable.
(2) non-generified components do not have IModel<T> get/setModel and T
get/setModelObject, instead they have IModel<?>get/setDefaultModel and
Object get/setDefaultModelObject. this clearly expresses that the
default component model is not tied to the type of component. this is
a bit of a pain from the code migration point of view, but we think is
worth the effort. generifyed components are free to implement the old
IModel<T> get/setModel, etc, but have to keep the unsafe cast inside.
see ListItem for an example.
basically we feel this is a much cleaner way then what is 1.4m2. this
is a call for confirmation/discussion from our user base. do try to
port a small project or a part of a larger project you are working on
to the [1] branch to see how the new api feels. if we do like this
more the new branch will be merged into what will be 1.4m3.
[1] https://svn.apache.org/repos/asf/wicket/sandbox/ivaynberg/generics
-igor
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