-Igor
On 8/28/06, Huy Do <[EMAIL PROTECTED]> wrote:
Hi Igor,
Thanks for that nice explanation. It's totally clear now. I've added a
wiki entry under
http://www.wicket-wiki.org.uk/wiki/index.php/Reference_library#Wicket_reference
at
http://www.wicket-wiki.org.uk/wiki/index.php/Tablesandgrids
It is still very rough, but that's all the time I got today. Can you
check and change where necessary.
Thanks again,
Huy
> simple answer is "because" :)
>
> if you look at the class hieararchy you will see that every repeater
> builds on the other.
>
> at the top we have RepeatingView - this is a very basic repeater. you
> add items to it - those items are rendered using the repeater's
> markup. thats all it does.
>
> below that we have a RefreshingView - this view takes an
> iterator<imodel> and lets user generate items much based on that
> iterator much like listview. items are also refreshed every request
> unlike the repeatingview. the big differences when compared to
> listview is that refreshing view works with iterators where as
> listview is limited to lists. another big difference is that
> refreshingview makes you wrap each iterator item in a model where as
> listview doesnot (you have to override getlistitemmodel() to do that
> in a listview) - by doing this you avoid all kinds of problems when
> dealing with non-static collections. it is easy to use any iterator by
> using ModelIteratorAdapter.
>
> below that we have a AbstractPageableView - this is like
> refreshingview + paging support
>
> below that we have DataView GridView
>
> DataView- this is a pageable view that is populated via idataprovider
> instead of an iterator<model> which makes working with databases much
> simpler
>
> GridView makes it simple to show an iterator in a grid where each row
> can have a max number of items
>
> below the DataView we have DataGridView - this is a view that extends
> the dataview with the idea of populators and makes displaying tabular
> data easy by letting populators populate each cell instead of you
> doing that in populateitem() yourself. the idea is that depending on
> rolls/whatnot you can vary the list of populators and simplify the logic.
>
> then there is also a datatable - the mcdaddy if you will - datatable
> extends the tree not by inheritance but by delegation. it wraps a
> datagridview and provides all the markup for you so you dont have to.
> it adds support for interchangeable toolbars like sortable headers,
> filters, pagers, etc.
>
> i think thats all of them. so why there are so many? because there are
> many uscases having a hierarchy like this lets you pick a component
> that delivers the exact functionality you need. personally i hate
> using components that have a bunch of extra features im not going to
> be using for my usecase - so maybe thats why i structured the
> repeaters like this when i built them. at the end i think everyone wins.
>
> hope this helps, mind cleaning this up and making a wiki page? :)
>
> -Igor
>
>
>
>
>
> On 8/28/06, *Huy Do* < [EMAIL PROTECTED]
> <mailto:[EMAIL PROTECTED]>> wrote:
>
> Hi,
>
> Just a something I'm a bit confused about being a wicket hobbyist.
> Why
> does wicket provide so many different options for the display of
> tables
> (as seen in the wicket contrib examples). It makes it hard to
> figure out
> which is the correct/or suitable method.
>
> Any guidance ?
>
> Also, are there any examples of producing forms like the following ?
>
> eg. I have domain Order and Order Lines.
>
> I want to create a form to edit both
>
> order.order_no
> order.date
> ...
> ...
>
> order.line[0].item_code
> order.line[0].item_qty
> ...
> ...
> ...
> order.line[x].item_qty
>
> Thanks,
>
> Huy
>
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