org.apache.commons.collections4.set

Class PredicatedSortedSet<E>

java.lang.Object

org.apache.commons.collections4.collection.AbstractCollectionDecorator<E>

org.apache.commons.collections4.collection.PredicatedCollection<E>

org.apache.commons.collections4.set.PredicatedSet<E>

org.apache.commons.collections4.set.PredicatedSortedSet<E>

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<E>, java.util.Collection<E>, java.util.Set<E>, java.util.SortedSet<E>

Direct Known Subclasses:

PredicatedNavigableSet

public class PredicatedSortedSet<E>
extends PredicatedSet<E>
implements java.util.SortedSet<E>

Decorates another SortedSet to validate that all additions match a specified predicate.

This set exists to provide validation for the decorated set. It is normally created to decorate an empty set. If an object cannot be added to the set, an IllegalArgumentException is thrown.

One usage would be to ensure that no null entries are added to the set.

 SortedSet set =
   PredicatedSortedSet.predicatedSortedSet(new TreeSet(),
                                           NotNullPredicate.notNullPredicate());
 

This class is Serializable from Commons Collections 3.1.

Since:

3.0

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.commons.collections4.collection.PredicatedCollection

PredicatedCollection.Builder<E>

Method Summary

Modifier and Type	Method and Description
java.util.Comparator<? super E>	comparator()
E	first()
java.util.SortedSet<E>	headSet(E toElement)
E	last()
static <E> PredicatedSortedSet<E>	predicatedSortedSet(java.util.SortedSet<E> set, Predicate<? super E> predicate) Factory method to create a predicated (validating) sorted set.
java.util.SortedSet<E>	subSet(E fromElement, E toElement)
java.util.SortedSet<E>	tailSet(E fromElement)

Methods inherited from class org.apache.commons.collections4.set.PredicatedSet

equals, hashCode, predicatedSet

Methods inherited from class org.apache.commons.collections4.collection.PredicatedCollection

add, addAll, builder, notNullBuilder, predicatedCollection

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

clear, contains, containsAll, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.SortedSet

spliterator

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.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

predicatedSortedSet

public static <E> PredicatedSortedSet<E> predicatedSortedSet(java.util.SortedSet<E> set,
                                                             Predicate<? super E> predicate)

Factory method to create a predicated (validating) sorted set.

If there are any elements already in the set being decorated, they are validated.

Type Parameters:

E - the element type

Parameters:

set - the set to decorate, must not be null

predicate - the predicate to use for validation, must not be null

Returns:

a new predicated sorted set.

Throws:

java.lang.NullPointerException - if set or predicate is null

java.lang.IllegalArgumentException - if the set contains invalid elements

Since:

4.0

comparator

public java.util.Comparator<? super E> comparator()

Specified by:

comparator in interface java.util.SortedSet<E>

first

public E first()

Specified by:

first in interface java.util.SortedSet<E>

last

public E last()

Specified by:

last in interface java.util.SortedSet<E>

subSet

public java.util.SortedSet<E> subSet(E fromElement,
                                     E toElement)

Specified by:

subSet in interface java.util.SortedSet<E>

headSet

public java.util.SortedSet<E> headSet(E toElement)

Specified by:

headSet in interface java.util.SortedSet<E>

tailSet

public java.util.SortedSet<E> tailSet(E fromElement)

Specified by:

tailSet in interface java.util.SortedSet<E>