Package org.apache.commons.collections.list

Class TransformedList

java.lang.Object
org.apache.commons.collections.collection.AbstractCollectionDecorator
org.apache.commons.collections.collection.AbstractSerializableCollectionDecorator
org.apache.commons.collections.collection.TransformedCollection
org.apache.commons.collections.list.TransformedList
All Implemented Interfaces:
Serializable, Iterable, Collection, List
public class TransformedList extends TransformedCollection implements List
Decorates another List to transform objects that are added.

The add and set methods are affected by this class. Thus objects must be removed or searched for using their transformed form. For example, if the transformation converts Strings to Integers, you must use the Integer form to remove objects.

This class is Serializable from Commons Collections 3.1.

Since:
Commons Collections 3.0
Version:
$Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
Author:
Stephen Colebourne
See Also:

  • Constructor Details

    • TransformedList

      protected TransformedList(List list, Transformer transformer)
      Constructor that wraps (not copies).

      If there are any elements already in the list being decorated, they are NOT transformed.

      Parameters:
      list - the list to decorate, must not be null
      transformer - the transformer to use for conversion, must not be null
      Throws:
      IllegalArgumentException - if list or transformer is null

  • Method Details

    • decorate

      public static List decorate(List list, Transformer transformer)
      Factory method to create a transforming list.

      If there are any elements already in the list being decorated, they are NOT transformed.

      Parameters:
      list - the list to decorate, must not be null
      transformer - the transformer to use for conversion, must not be null
      Throws:
      IllegalArgumentException - if list or transformer is null

    • getList

      protected List getList()
      Gets the decorated list.
      Returns:
      the decorated list

    • get

      public Object get(int index)
      Specified by:
      get in interface List

    • indexOf

      public int indexOf(Object object)
      Specified by:
      indexOf in interface List

    • lastIndexOf

      public int lastIndexOf(Object object)
      Specified by:
      lastIndexOf in interface List

    • remove

      public Object remove(int index)
      Specified by:
      remove in interface List

    • add

      public void add(int index, Object object)
      Specified by:
      add in interface List

    • addAll

      public boolean addAll(int index, Collection coll)
      Specified by:
      addAll in interface List

    • listIterator

      public ListIterator listIterator()
      Specified by:
      listIterator in interface List

    • listIterator

      public ListIterator listIterator(int i)
      Specified by:
      listIterator in interface List

    • set

      public Object set(int index, Object object)
      Specified by:
      set in interface List

    • subList

      public List subList(int fromIndex, int toIndex)
      Specified by:
      subList in interface List