Class TransformedSet<E>
java.lang.Object
org.apache.commons.collections4.collection.AbstractCollectionDecorator<E>
org.apache.commons.collections4.collection.TransformedCollection<E>
org.apache.commons.collections4.set.TransformedSet<E>
- Type Parameters:
- E- the type of the elements in this set
- All Implemented Interfaces:
- Serializable,- Iterable<E>,- Collection<E>,- Set<E>
- Direct Known Subclasses:
- TransformedSortedSet
Decorates another 
Set to transform objects that are added.
 The add 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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Field SummaryFields inherited from class org.apache.commons.collections4.collection.TransformedCollectiontransformer
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Constructor SummaryConstructorsModifierConstructorDescriptionprotectedTransformedSet(Set<E> set, Transformer<? super E, ? extends E> transformer) Constructor that wraps (not copies).
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Method SummaryModifier and TypeMethodDescriptionbooleaninthashCode()static <E> Set<E> transformedSet(Set<E> set, Transformer<? super E, ? extends E> transformer) Factory method to create a transforming set that will transform existing contents of the specified set.static <E> TransformedSet<E> transformingSet(Set<E> set, Transformer<? super E, ? extends E> transformer) Factory method to create a transforming set.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- 
TransformedSetConstructor that wraps (not copies).If there are any elements already in the set being decorated, they are NOT transformed. - Parameters:
- set- the set to decorate, must not be null
- transformer- the transformer to use for conversion, must not be null
- Throws:
- NullPointerException- if set or transformer is null
 
 
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Method Details- 
transformedSetFactory method to create a transforming set that will transform existing contents of the specified set.If there are any elements already in the set being decorated, they will be transformed by this method. Contrast this with transformingSet(Set, Transformer).- Type Parameters:
- E- the element type
- Parameters:
- set- the set to decorate, must not be null
- transformer- the transformer to use for conversion, must not be null
- Returns:
- a new transformed set
- Throws:
- NullPointerException- if set or transformer is null
- Since:
- 4.0
 
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transformingSetpublic static <E> TransformedSet<E> transformingSet(Set<E> set, Transformer<? super E, ? extends E> transformer) Factory method to create a transforming set.If there are any elements already in the set being decorated, they are NOT transformed. Contrast this with transformedSet(Set, Transformer).- Type Parameters:
- E- the element type
- Parameters:
- set- the set to decorate, must not be null
- transformer- the transformer to use for conversion, must not be null
- Returns:
- a new transformed set
- Throws:
- NullPointerException- if set or transformer is null
- Since:
- 4.0
 
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equals
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hashCode
 
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