Package org.apache.wicket.markup.repeater.data

Class ListDataProvider<T extends java.io.Serializable>

  • Type Parameters:
    T -
    All Implemented Interfaces:
    java.io.Serializable, IDataProvider<T>, IDetachable, org.apache.wicket.util.io.IClusterable
    public class ListDataProvider<T extends java.io.Serializable>
extends java.lang.Object
implements IDataProvider<T>
    Allows the use of lists with DataView. The only requirement is that either list items must be serializable or model(Object) needs to be overridden to provide the proper model implementation.
    Author:
    Igor Vaynberg ( ivaynberg )
    See Also:
    Serialized Form

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected java.util.List<T> getData()
      Subclass to lazy load the list
      java.util.Iterator<T> iterator​(long first, long count)
      Gets an iterator for the subset of total data
      IModel<T> model​(T object)
      Callback used by the consumer of this data provider to wrap objects retrieved from IDataProvider.iterator(long, long) with a model (usually a detachable one).
      long size()
      Gets total number of items in the collection represented by the DataProvider

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • ListDataProvider

        public ListDataProvider()
        Constructs an empty provider. Useful for lazy loading together with getData()

      • ListDataProvider

        public ListDataProvider​(java.util.List<T> list)
        Parameters:
        list - the list used as dataprovider for the dataview

    • Method Detail

      • getData

        protected java.util.List<T> getData()
        Subclass to lazy load the list
        Returns:
        The list

      • iterator

        public java.util.Iterator<T> iterator​(long first,
                                      long count)
        Description copied from interface: IDataProvider
        Gets an iterator for the subset of total data
        Specified by:
        iterator in interface IDataProvider<T extends java.io.Serializable>
        Parameters:
        first - first row of data
        count - minimum number of elements to retrieve
        Returns:
        iterator capable of iterating over {first, first+count} items

      • size

        public long size()
        Description copied from interface: IDataProvider
        Gets total number of items in the collection represented by the DataProvider
        Specified by:
        size in interface IDataProvider<T extends java.io.Serializable>
        Returns:
        total item count

      • model

        public IModel<T> model​(T object)
        Description copied from interface: IDataProvider
        Callback used by the consumer of this data provider to wrap objects retrieved from IDataProvider.iterator(long, long) with a model (usually a detachable one).
        Specified by:
        model in interface IDataProvider<T extends java.io.Serializable>
        Parameters:
        object - the object that needs to be wrapped
        Returns:
        the model representation of the object