org.geotools.util

Class KeySortedList<K extends Comparable<K>,V>

Object

AbstractCollection<E>

AbstractList<E>

AbstractSequentialList<V>

KeySortedList<K,V>

Type Parameters:

K - The type of keys in the sorted list, to be used for sorting.

V - The type of elements in the list.

All Implemented Interfaces:

Serializable, Iterable<V>, Collection<V>, List<V>

public class KeySortedList<K extends Comparable<K>,V>
extends AbstractSequentialList<V>
implements Serializable

List of elements sorted by a key which is not the element itself.

This class is not thread-safe. Synchronizations (if wanted) are user's reponsability.

Since:

2.2

Author:

Simone Giannecchini, Martin Desruisseaux

See Also:

Serialized Form

Field Summary

Fields inherited from class AbstractList

modCount

Constructor Summary

Constructors

Constructor and Description
KeySortedList() Creates a new, initially empty list.

Method Summary

Modifier and Type	Method and Description
void	add(K key, V element) Inserts the specified element at a position determined by the specified key.
void	clear() Removes all of the elements from this list.
boolean	containsKey(K key) Returns true if the list contains an element added with the specified key.
int	count(K key) Returns the number of elements added with the specified key.
V	first(K key) Returns the first element added with the specified key.
KeySortedList<K,V>	headList(K toKey) Returns a view of the portion of this list whose keys are strictly less than toKey.
V	last(K key) Returns the last element added with the specified key.
ListIterator<V>	listIterator(int index) Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position.
ListIterator<V>	listIterator(K fromKey) Returns a list iterator of the elements in this list (in proper sequence), starting at the elements added with the specified key.
int	removeAll(K key) Removes all values that were added with the specified key.
int	size() Returns the number of elements in this list.
KeySortedList<K,V>	tailList(K fromKey) Returns a view of the portion of this list whose keys are greater than or equal to fromKey.

Methods inherited from class AbstractSequentialList

add, addAll, get, iterator, remove, set

Methods inherited from class AbstractList

add, equals, hashCode, indexOf, lastIndexOf, listIterator, removeRange, subList

Methods inherited from class AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class Object

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

Methods inherited from interface List

addAll, contains, containsAll, isEmpty, remove, removeAll, replaceAll, retainAll, sort, spliterator, toArray, toArray

Methods inherited from interface Collection

parallelStream, removeIf, stream

Methods inherited from interface Iterable

forEach

Constructor Detail

KeySortedList

public KeySortedList()

Creates a new, initially empty list.

Method Detail

clear

public void clear()

Removes all of the elements from this list.

Specified by:

clear in interface Collection<V>

Specified by:

clear in interface List<V>

Overrides:

clear in class AbstractList<V>

size

public int size()

Returns the number of elements in this list.

Specified by:

size in interface Collection<V>

Specified by:

size in interface List<V>

Specified by:

size in class AbstractCollection<V>

add

public void add(K key,
                V element)

Inserts the specified element at a position determined by the specified key. If some elements were already inserted for the specified key, then this method do not replaces the old value (like what a Map would do), but instead add the new element with the same key.

Parameters:

key - Key to be used to find the right location.

element - Object to be inserted.

removeAll

public int removeAll(K key)

Removes all values that were added with the specified key.

Parameters:

key - The key of values to remove.

Returns:

The number of elements removed.

count

public int count(K key)

Returns the number of elements added with the specified key.

Parameters:

key - The key of elements to count.

Returns:

The number of elements inserted with the given key.

containsKey

public boolean containsKey(K key)

Returns true if the list contains an element added with the specified key. This is equivalent to testing count(key) != 0.

first

public V first(K key)
        throws NoSuchElementException

Returns the first element added with the specified key.

Parameters:

key - The key for the element to search for.

Returns:

The first element added with the specified key.

Throws:

NoSuchElementException - if there is no element for the specified key.

last

public V last(K key)
       throws NoSuchElementException

Returns the last element added with the specified key.

Parameters:

key - The key for the element to search for.

Returns:

The last element added with the specified key.

Throws:

NoSuchElementException - if there is no element for the specified key.

listIterator

public ListIterator<V> listIterator(K fromKey)

Returns a list iterator of the elements in this list (in proper sequence), starting at the elements added with the specified key.

Parameters:

fromKey - The key of the first element to returns.

Returns:

A list iterator of the elements in this list (in proper sequence).

Throws:

IndexOutOfBoundsException - if the index is out of range.

listIterator

public ListIterator<V> listIterator(int index)

Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position. The specified index indicates the first element that would be returned by an initial call to the next() method.

Specified by:

listIterator in interface List<V>

Specified by:

listIterator in class AbstractSequentialList<V>

Parameters:

index - Index of first element to be returned from the list iterator.

Returns:

A list iterator of the elements in this list (in proper sequence).

Throws:

IndexOutOfBoundsException - if the index is out of range.

headList

public KeySortedList<K,V> headList(K toKey)

Returns a view of the portion of this list whose keys are strictly less than toKey. The returned list is backed by this list, so changes in the returned list are reflected in this list, and vice-versa.

Parameters:

toKey - high endpoint (exclusive) of the sub list.

Returns:

A view of the specified initial range of this list.

tailList

public KeySortedList<K,V> tailList(K fromKey)

Returns a view of the portion of this list whose keys are greater than or equal to fromKey. The returned list is backed by this list, so changes in the returned list are reflected in this list, and vice-versa.

Parameters:

fromKey - low endpoint (inclusive) of the sub list.

Returns:

A view of the specified final range of this list.