public class ReuseIfModelsEqualStrategy extends Object implements IItemReuseStrategy
Notice that the model and not the model object needs to implement the
Object.equals(Object)
and Object.hashCode()
methods. Most of the time it is a good idea to
forward the calls to the object, however if a detachable model is used it is often enough to
compare an identifier for the object the models are pointing to ( this saves the model from loading the
object).
Constructor and Description |
---|
ReuseIfModelsEqualStrategy() |
Modifier and Type | Method and Description |
---|---|
static IItemReuseStrategy |
getInstance() |
<T> Iterator<Item<T>> |
getItems(IItemFactory<T> factory,
Iterator<IModel<T>> newModels,
Iterator<Item<T>> existingItems)
Returns an iterator over items that will be added to the view.
|
public static IItemReuseStrategy getInstance()
public <T> Iterator<Item<T>> getItems(IItemFactory<T> factory, Iterator<IModel<T>> newModels, Iterator<Item<T>> existingItems)
IItemReuseStrategy
getItems
in interface IItemReuseStrategy
T
- type of Itemfactory
- implementation of IItemFactorynewModels
- iterator over models for itemsexistingItems
- iterator over child itemsIItemReuseStrategy.getItems(org.apache.wicket.markup.repeater.IItemFactory,
java.util.Iterator, java.util.Iterator)
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