Module de.haumacher.msgbuf

Package de.haumacher.msgbuf.util

Class ReferenceMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

de.haumacher.msgbuf.util.ReferenceMap<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

public abstract class ReferenceMap<K,V>
extends HashMap<K,V>

Map implementing a map-valued property of a data object that has a reverse end.

The reverse end must be handled in concrete subclasses by overriding beforeAdd(Object, Object) and afterRemove(Object, Object).

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K extends Object,V extends Object>, AbstractMap.SimpleImmutableEntry<K extends Object,V extends Object>

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K extends Object,V extends Object>

Constructor Summary

Constructors

Constructor	Description
ReferenceMap()

Method Summary

Modifier and Type	Method	Description
protected abstract void	afterRemove(K key, V value)
protected abstract void	beforeAdd(K key, V value)
void	clear()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> collection)
V	remove(Object key)
boolean	remove(Object key, Object value)

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, putIfAbsent, replace, replace, replaceAll, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

ReferenceMap

public ReferenceMap()

Method Detail

put

public V put(K key,
             V value)

Specified by:

put in interface Map<K,V>

Overrides:

put in class HashMap<K,V>

putAll

public void putAll(Map<? extends K,? extends V> collection)

Specified by:

putAll in interface Map<K,V>

Overrides:

putAll in class HashMap<K,V>

beforeAdd

protected abstract void beforeAdd(K key,
                                  V value)

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

Overrides:

remove in class HashMap<K,V>

remove

public boolean remove(Object key,
                      Object value)

Specified by:

remove in interface Map<K,V>

Overrides:

remove in class HashMap<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

Overrides:

clear in class HashMap<K,V>

afterRemove

protected abstract void afterRemove(K key,
                                    V value)