org.compiere.util
Class MultiMap<K,V>

java.lang.Object
  org.compiere.util.MultiMap<K,V>

Type Parameters:

K - Key

V - Value

All Implemented Interfaces:

Serializable, Map<K,V>

public final class MultiMap<K,V>
extends Object
implements Map<K,V>, Serializable

MultiMap allows multiple keys with their values. It accepts null values as keys and values. (implemented as two array lists)

Version:

$Id: MultiMap.java,v 1.3 2006/07/30 00:51:03 jjanke Exp $

Author:

Jorg Janke

See Also:

Serialized Form

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

MultiMap()
Constructor with 10 initial Capacity (same as ArrayList)

MultiMap(int initialCapacity)
Constructor

Method Summary

void	clear() Clear content
boolean	containsKey(Object key) Contains Key
boolean	containsValue(Object value) Contains Value
Set<Map.Entry<K,V>>	entrySet() Get entry set - not implemented
boolean	equals(Object o) Equals - not implemented
V	get(Object key) Return ArrayList of Values of Key
ArrayList<K>	getKeys(Object value) Return ArrayList of Keys with Value
ArrayList<V>	getValues(Object key) Return ArrayList of Values of Key
boolean	isEmpty() Is Empty
Set<K>	keySet() Return HashSet of Keys
void	printToLog() dump all keys - values to log
V	put(K key, V value) Put Key & Value
void	putAll(Map<? extends K,? extends V> t) Put all
V	remove(Object key) Remove key
int	size() Return number of elements
String	toString() Returns class name and number of entries
Collection<V>	values() Return Collection of values

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

hashCode

Constructor Detail

MultiMap

public MultiMap()

Constructor with 10 initial Capacity (same as ArrayList)

MultiMap

public MultiMap(int initialCapacity)

Constructor

Parameters:

initialCapacity - initial capacity

Method Detail

size

public int size()

Return number of elements

Specified by:

size in interface Map<K,V>

Returns:

size

isEmpty

public boolean isEmpty()

Is Empty

Specified by:

isEmpty in interface Map<K,V>

Returns:

true if empty

containsKey

public boolean containsKey(Object key)

Contains Key

Specified by:

containsKey in interface Map<K,V>

Parameters:

key - test key

Returns:

true if key exist

containsValue

public boolean containsValue(Object value)

Contains Value

Specified by:

containsValue in interface Map<K,V>

Parameters:

value - test value

Returns:

true if value exists

get

public V get(Object key)

Return ArrayList of Values of Key

Specified by:

get in interface Map<K,V>

Parameters:

key - key

Returns:

value

getValues

public ArrayList<V> getValues(Object key)

Return ArrayList of Values of Key

Parameters:

key - key

Returns:

array list of values

getKeys

public ArrayList<K> getKeys(Object value)

Return ArrayList of Keys with Value

Parameters:

value - value

Returns:

array list of keys

put

public V put(K key,
             V value)

Put Key & Value

Specified by:

put in interface Map<K,V>

Parameters:

key -

value -

Returns:

always null

remove

public V remove(Object key)

Remove key

Specified by:

remove in interface Map<K,V>

Parameters:

key - key

Returns:

removed value

putAll

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

Put all

Specified by:

putAll in interface Map<K,V>

Parameters:

t -

clear

public void clear()

Clear content

Specified by:

clear in interface Map<K,V>

keySet

public Set<K> keySet()

Return HashSet of Keys

Specified by:

keySet in interface Map<K,V>

Returns:

key set

values

public Collection<V> values()

Return Collection of values

Specified by:

values in interface Map<K,V>

Returns:

values

entrySet

public Set<Map.Entry<K,V>> entrySet()

Get entry set - not implemented

Specified by:

entrySet in interface Map<K,V>

Returns:

entry set

equals

public boolean equals(Object o)

Equals - not implemented

Specified by:

equals in interface Map<K,V>

Overrides:

equals in class Object

Parameters:

o - test object

Returns:

true if equal

toString

public String toString()

Returns class name and number of entries

Overrides:

toString in class Object

Returns:

info

printToLog

public void printToLog()

dump all keys - values to log