net.sf.molae.pipe.genimpl
Class SortedKeyProjection<E>

java.lang.Object
  net.sf.molae.pipe.basic.ObjectProxy<B>
      net.sf.molae.pipe.basic.CollectionProxy<B,E>
          net.sf.molae.pipe.basic.SetProxy<Set<E>,E>
              net.sf.molae.pipe.genimpl.KeyProjection<E>
                  net.sf.molae.pipe.genimpl.SortedKeyProjection<E>

All Implemented Interfaces:

Iterable<E>, Collection<E>, Set<E>, SortedSet<E>

public final class SortedKeyProjection<E>
extends KeyProjection<E>
implements SortedSet<E>

Implements a sorted set on an arbitrary sorted map by mapping each set element to a map entry with the set element as key and a dummy element as value of the map.

Constructor Summary

SortedKeyProjection(SortedMap<E,Object> base)
Constructs a new key projection of the specified map.

Method Summary

Comparator<? super E>	comparator()
E	first() Returns the first (lowest) key currently in the base map.
SortedSet<E>	headSet(E toElement)
E	last() Returns the last (highest) key currently in the base map.
SortedSet<E>	subSet(E fromElement, E toElement)
SortedSet<E>	tailSet(E fromElement)

Methods inherited from class net.sf.molae.pipe.genimpl.KeyProjection

add, addAll, clear, contains, isEmpty, remove, size

Methods inherited from class net.sf.molae.pipe.basic.SetProxy

equals

Methods inherited from class net.sf.molae.pipe.basic.CollectionProxy

containsAll, iterator, removeAll, retainAll, toArray, toArray

Methods inherited from class net.sf.molae.pipe.basic.ObjectProxy

assertNotNull, getBase, hashCode, toString, toVerboseString

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Set

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

Constructor Detail

SortedKeyProjection

public SortedKeyProjection(SortedMap<E,Object> base)

Constructs a new key projection of the specified map.

Parameters:

base - The base map of this set. The map may contain entries, but must not contain null values.

Method Detail

comparator

public Comparator<? super E> comparator()

Specified by:

comparator in interface SortedSet<E>

subSet

public SortedSet<E> subSet(E fromElement,
                           E toElement)

Specified by:

subSet in interface SortedSet<E>

Throws:

ClassCastException - depending on the base map

IllegalArgumentException - depending on the base map

NullPointerException - depending on the base map

headSet

public SortedSet<E> headSet(E toElement)

Specified by:

headSet in interface SortedSet<E>

Throws:

ClassCastException - depending on the base map

IllegalArgumentException - depending on the base map

NullPointerException - depending on the base map

tailSet

public SortedSet<E> tailSet(E fromElement)

Specified by:

tailSet in interface SortedSet<E>

Throws:

ClassCastException - depending on the base map

IllegalArgumentException - depending on the base map

NullPointerException - depending on the base map

first

public E first()

Returns the first (lowest) key currently in the base map.

Specified by:

first in interface SortedSet<E>

Returns:

the first (lowest) key currently in the base map.

Throws:

NoSuchElementException - base map is empty.

last

public E last()

Returns the last (highest) key currently in the base map.

Specified by:

last in interface SortedSet<E>

Returns:

the last (highest) key currently in the base map.

Throws:

NoSuchElementException - base map is empty.