# Class TransformedSortedSet<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>
org.apache.commons.collections4.set.TransformedSortedSet<E>

Type Parameters:
  `E` - the type of the elements in this set

All Implemented Interfaces:
  `Serializable`, `Iterable<E>`, `Collection<E>`, `Set<E>`, `SortedSet<E>`

Direct Known Subclasses:
  `TransformedNavigableSet`

public class TransformedSortedSet<E> extends TransformedSet<E> implements SortedSet<E>
Decorates another `SortedSet` 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:
  - Serialized Form

- ## Field Summary

  ### Fields inherited from class org.apache.commons.collections4.collection.TransformedCollection

  `transformer`

- ## Constructor Summary

  Constructors
  Modifier
  Constructor
  Description
  `protected`
  `TransformedSortedSet(SortedSet<E> set, Transformer<? super E,? extends E> transformer)`
  Constructor that wraps (not copies).

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Comparator<? super E>`
  `comparator()`
  `E`
  `first()`
  `protected SortedSet<E>`
  `getSortedSet()`
  Gets the decorated set.
  `SortedSet<E>`
  `headSet(E toElement)`
  `E`
  `last()`
  `SortedSet<E>`
  `subSet(E fromElement, E toElement)`
  `SortedSet<E>`
  `tailSet(E fromElement)`
  `static <E> TransformedSortedSet<E>`
  `transformedSortedSet(SortedSet<E> set, Transformer<? super E,? extends E> transformer)`
  Factory method to create a transforming sorted set that will transform existing contents of the specified sorted set.
  `static <E> TransformedSortedSet<E>`
  `transformingSortedSet(SortedSet<E> set, Transformer<? super E,? extends E> transformer)`
  Factory method to create a transforming sorted set.

  ### Methods inherited from class org.apache.commons.collections4.set.TransformedSet

  `equals, hashCode, transformedSet, transformingSet`

  ### Methods inherited from class org.apache.commons.collections4.collection.TransformedCollection

  `add, addAll, transform, transform, transformedCollection, transformingCollection`

  ### Methods inherited from class org.apache.commons.collections4.collection.AbstractCollectionDecorator

  `clear, contains, containsAll, decorated, isEmpty, iterator, remove, removeAll, removeIf, retainAll, setCollection, size, toArray, toArray, toString`

  ### Methods inherited from class java.lang.Object

  `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

  ### Methods inherited from interface java.util.Collection

  `parallelStream, removeIf, stream`

  ### Methods inherited from interface java.lang.Iterable

  `forEach`

  ### Methods inherited from interface java.util.Set

  `add, addAll, clear, contains, containsAll, equals, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray`

  ### Methods inherited from interface java.util.SortedSet

  `spliterator`

- ## Constructor Details

  - ### TransformedSortedSet

    protected TransformedSortedSet(SortedSet<E> set, Transformer<? super E,? extends E> transformer)
    Constructor 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

- ## Method Details

  - ### transformedSortedSet

    public static <E> TransformedSortedSet<E> transformedSortedSet(SortedSet<E> set, Transformer<? super E,? extends E> transformer)
    Factory method to create a transforming sorted set that will transform existing contents of the specified sorted set.

    If there are any elements already in the set being decorated, they will be transformed by this method. Contrast this with `transformingSortedSet(SortedSet, 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 `SortedSet`
    Throws:
      `NullPointerException` - if set or transformer is null
    Since:
      4.0

  - ### transformingSortedSet

    public static <E> TransformedSortedSet<E> transformingSortedSet(SortedSet<E> set, Transformer<? super E,? extends E> transformer)
    Factory method to create a transforming sorted set.

    If there are any elements already in the set being decorated, they are NOT transformed. Contrast this with `transformedSortedSet(SortedSet, 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 `SortedSet`
    Throws:
      `NullPointerException` - if set or transformer is null
    Since:
      4.0

  - ### comparator

    public Comparator<? super E> comparator()
    Specified by:
      `comparator` in interface `SortedSet<E>`

  - ### first

    public E first()
    Specified by:
      `first` in interface `SortedSet<E>`

  - ### getSortedSet

    protected SortedSet<E> getSortedSet()
    Gets the decorated set.
    Returns:
      the decorated set

  - ### headSet

    public SortedSet<E> headSet(E toElement)
    Specified by:
      `headSet` in interface `SortedSet<E>`

  - ### last

    public E last()
    Specified by:
      `last` in interface `SortedSet<E>`

  - ### subSet

    public SortedSet<E> subSet(E fromElement, E toElement)
    Specified by:
      `subSet` in interface `SortedSet<E>`

  - ### tailSet

    public SortedSet<E> tailSet(E fromElement)
    Specified by:
      `tailSet` in interface `SortedSet<E>`