org.apache.wicket.markup.repeater
Interface IItemReuseStrategy

All Superinterfaces:

IClusterable, java.io.Serializable

All Known Implementing Classes:

DefaultItemReuseStrategy, ReuseIfModelsEqualStrategy

public interface IItemReuseStrategy
extends IClusterable

Interface for item reuse strategies.

Notice: Child items will be rendered in the order they are provided by the returned iterator, so it is important that the strategy preserve this order

Author:

Igor Vaynberg (ivaynberg)

Method Summary

<T> java.util.Iterator<Item<T>>

getItems(IItemFactory<T> factory, java.util.Iterator<IModel<T>> newModels, java.util.Iterator<Item<T>> existingItems) Returns an iterator over items that will be added to the view.

Method Detail

getItems

<T> java.util.Iterator<Item<T>> getItems(IItemFactory<T> factory,
                                         java.util.Iterator<IModel<T>> newModels,
                                         java.util.Iterator<Item<T>> existingItems)

Returns an iterator over items that will be added to the view. The iterator needs to return all the items because the old ones are removed prior to the new ones added.

Type Parameters:

T - type of Item

Parameters:

factory - implementation of IItemFactory

newModels - iterator over models for items

existingItems - iterator over child items

Returns:

iterator over items that will be added after all the old items are moved.