Sven,
On Mon, Jun 8, 2015 at 10:07 AM, Sven Meier <[email protected]> wrote:
> Hi,
>
> my only objection would be that this SortableListDataProvider doesn't
> actually sort anything.
>
> AFAIK this does no harm though, so why not let the current
> ListDataProvider implement ISortableDataProvider?
>
That's also posible. All I want is not having to roll out my own over an
over... :-)
>
> Have fun
> Sven
>
>
>
> On 08.06.2015 08:50, Ernesto Reinaldo Barreiro wrote:
>
>> On many project I just need to show a list of beans on an AJAX default
>> datatable... There is already a ListDataProvider... but this component
>> require a Sortable version... and I always end up rolling out something
>> like the class bellow. Would it make sense to include a similar class on
>> wicket code base?
>>
>> /**
>> * Sortable version of ListDataProvider.
>>
>> */
>>
>> public class SortableListDataProvider<T extends Serializable, S>
>> extends SortableDataProvider<T, S> {
>>
>> private static final long serialVersionUID = 1L;
>>
>> /** reference to the list used as dataprovider for the dataview */
>> private final List<T> list;
>>
>> /**
>> * Constructs an empty provider. Useful for lazy loading together
>> with {@linkplain #getData()}
>> */
>> public SortableListDataProvider()
>> {
>> this(Collections.<T> emptyList());
>> }
>>
>> /**
>> *
>> * @param list
>> * the list used as dataprovider for the dataview
>> */
>> public SortableListDataProvider(List<T> list)
>> {
>> if (list == null)
>> {
>> throw new IllegalArgumentException("argument [list] cannot
>> be null");
>> }
>>
>> this.list = list;
>> }
>>
>> /**
>> * Subclass to lazy load the list
>> *
>> * @return The list
>> */
>> protected List<T> getData()
>> {
>> return list;
>> }
>>
>> @Override
>> public Iterator<? extends T> iterator(final long first, final long
>> count)
>> {
>> List<T> list = getData();
>>
>> long toIndex = first + count;
>> if (toIndex > list.size())
>> {
>> toIndex = list.size();
>> }
>> return list.subList((int)first, (int)toIndex).listIterator();
>> }
>>
>> /**
>> * @see IDataProvider#size()
>> */
>> @Override
>> public long size()
>> {
>> return getData().size();
>> }
>>
>> /**
>> * @see IDataProvider#model(Object)
>> */
>> @Override
>> public IModel<T> model(T object)
>> {
>> return new Model<T>(object);
>> }
>>
>> /**
>> * @see org.apache.wicket.model.IDetachable#detach()
>> */
>> @Override
>> public void detach()
>> {
>> }
>> }
>>
>>
>
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>
--
Regards - Ernesto Reinaldo Barreiro
