Package org.apache.commons.collections.list

Class TransformedList

  • All Implemented Interfaces:
    java.io.Serializable, java.lang.Iterable, java.util.Collection, java.util.List
    public class TransformedList
extends TransformedCollection
implements java.util.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
    See Also:
    Serialized Form

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void add​(int index, java.lang.Object object)  
      boolean addAll​(int index, java.util.Collection coll)  
      static java.util.List decorate​(java.util.List list, Transformer transformer)
      Factory method to create a transforming list.
      java.lang.Object get​(int index)  
      int indexOf​(java.lang.Object object)  
      int lastIndexOf​(java.lang.Object object)  
      java.util.ListIterator listIterator()  
      java.util.ListIterator listIterator​(int i)  
      java.lang.Object remove​(int index)  
      java.lang.Object set​(int index, java.lang.Object object)  
      java.util.List subList​(int fromIndex, int toIndex)  

      • Methods inherited from class java.lang.Object

        getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Collection

        parallelStream, removeIf, stream, toArray

      • Methods inherited from interface java.lang.Iterable

        forEach

      • Methods inherited from interface java.util.List

        add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, replaceAll, retainAll, size, sort, spliterator, toArray, toArray

    • Method Detail

      • decorate

        public static java.util.List decorate​(java.util.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:
        java.lang.IllegalArgumentException - if list or transformer is null

      • get

        public java.lang.Object get​(int index)
        Specified by:
        get in interface java.util.List

      • indexOf

        public int indexOf​(java.lang.Object object)
        Specified by:
        indexOf in interface java.util.List

      • lastIndexOf

        public int lastIndexOf​(java.lang.Object object)
        Specified by:
        lastIndexOf in interface java.util.List

      • remove

        public java.lang.Object remove​(int index)
        Specified by:
        remove in interface java.util.List

      • add

        public void add​(int index,
                java.lang.Object object)
        Specified by:
        add in interface java.util.List

      • addAll

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

      • listIterator

        public java.util.ListIterator listIterator()
        Specified by:
        listIterator in interface java.util.List

      • listIterator

        public java.util.ListIterator listIterator​(int i)
        Specified by:
        listIterator in interface java.util.List

      • set

        public java.lang.Object set​(int index,
                            java.lang.Object object)
        Specified by:
        set in interface java.util.List

      • subList

        public java.util.List subList​(int fromIndex,
                              int toIndex)
        Specified by:
        subList in interface java.util.List