Class TransformedList<E>
java.lang.Object
org.apache.commons.collections4.collection.AbstractCollectionDecorator<E>
org.apache.commons.collections4.collection.TransformedCollection<E>
org.apache.commons.collections4.list.TransformedList<E>
- Type Parameters:
- E- the type of the elements in the list.
- All Implemented Interfaces:
- Serializable,- Iterable<E>,- Collection<E>,- List<E>
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:
- 3.0
- See Also:
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Nested Class SummaryNested ClassesModifier and TypeClassDescriptionprotected classInner class Iterator for the TransformedList
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Field SummaryFields inherited from class org.apache.commons.collections4.collection.TransformedCollectiontransformer
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Constructor SummaryConstructorsModifierConstructorDescriptionprotectedTransformedList(List<E> list, Transformer<? super E, ? extends E> transformer) Constructor that wraps (not copies).
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Method SummaryModifier and TypeMethodDescriptionvoidbooleanaddAll(int index, Collection<? extends E> coll) booleanget(int index) getList()Gets the decorated list.inthashCode()intintlastIndexOf(Object object) listIterator(int i) remove(int index) subList(int fromIndex, int toIndex) static <E> TransformedList<E> transformedList(List<E> list, Transformer<? super E, ? extends E> transformer) Factory method to create a transforming list that will transform existing contents of the specified list.static <E> TransformedList<E> transformingList(List<E> list, Transformer<? super E, ? extends E> transformer) Factory method to create a transforming list.Methods inherited from class org.apache.commons.collections4.collection.TransformedCollectionadd, addAll, transform, transform, transformedCollection, transformingCollectionMethods inherited from class org.apache.commons.collections4.collection.AbstractCollectionDecoratorclear, contains, containsAll, decorated, isEmpty, iterator, remove, removeAll, removeIf, retainAll, setCollection, size, toArray, toArray, toStringMethods inherited from class java.lang.Objectclone, finalize, getClass, notify, notifyAll, wait, wait, waitMethods inherited from interface java.util.CollectionparallelStream, removeIf, stream
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Constructor Details- 
TransformedListConstructor 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:
- NullPointerException- if list or transformer is null
 
 
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Method Details- 
transformedListpublic static <E> TransformedList<E> transformedList(List<E> list, Transformer<? super E, ? extends E> transformer) Factory method to create a transforming list that will transform existing contents of the specified list.If there are any elements already in the list being decorated, they will be transformed by this method. Contrast this with transformingList(List, Transformer).- Type Parameters:
- E- the type of the elements in the list
- Parameters:
- list- the list to decorate, must not be null
- transformer- the transformer to use for conversion, must not be null
- Returns:
- a new transformed List
- Throws:
- NullPointerException- if list or transformer is null
- Since:
- 4.0
 
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transformingListpublic static <E> TransformedList<E> transformingList(List<E> list, Transformer<? super E, ? extends E> transformer) Factory method to create a transforming list.If there are any elements already in the list being decorated, they are NOT transformed. Contrast this with transformedList(List, Transformer).- Type Parameters:
- E- the type of the elements in the list
- Parameters:
- list- the list to decorate, must not be null
- transformer- the transformer to use for conversion, must not be null
- Returns:
- a new transformed list
- Throws:
- NullPointerException- if list or transformer is null
- Since:
- 4.0
 
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add
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addAll
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equals
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get
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getList
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hashCode
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indexOf
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lastIndexOf- Specified by:
- lastIndexOfin interface- List<E>
 
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listIterator- Specified by:
- listIteratorin interface- List<E>
 
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listIterator- Specified by:
- listIteratorin interface- List<E>
 
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remove
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set
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subList
 
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