org.opencms.util

Class CmsManyToOneMap<K,V>

java.lang.Object

org.opencms.util.CmsManyToOneMap<K,V>

Type Parameters:

K - the key type

V - the value type

public class CmsManyToOneMap<K,V>
extends java.lang.Object

Special collection class which allows lookup from keys to values and from values to sets of keys.

It also implements efficient removal of values, not just keys.

Constructor Summary

Constructors

Constructor and Description
CmsManyToOneMap() Creates a new instance.
CmsManyToOneMap(CmsManyToOneMap<K,V> other) Creates a new instance by copying the data from another one.

Method Summary

Methods

Modifier and Type	Method and Description
V	get(K key) Gets the value for a key.
void	put(K key, V value) Associates a value with a key.
void	remove(K key) Removes the entry with the given key.
void	removeValue(V value) Removes all entries with the given value.

Methods inherited from class java.lang.Object

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

Constructor Detail

CmsManyToOneMap

public CmsManyToOneMap()

Creates a new instance.

CmsManyToOneMap

public CmsManyToOneMap(CmsManyToOneMap<K,V> other)

Creates a new instance by copying the data from another one.

Parameters:

other - the other map to copy the data from

Method Detail

get

public V get(K key)

Gets the value for a key.

Parameters:

key - the key

Returns:

the value for the key, or null

put

public void put(K key,
       V value)

Associates a value with a key.

Parameters:

key - the key

value - the value

remove

public void remove(K key)

Removes the entry with the given key.

Parameters:

key - the key

removeValue

public void removeValue(V value)

Removes all entries with the given value.

Parameters:

value - the value