org.hypergraphdb.util

Class TwoWayMap<X,Y>

java.lang.Object

org.hypergraphdb.util.TwoWayMap<X,Y>

Type Parameters:

X -

Y -

public class TwoWayMap<X,Y>
extends Object

A bi-directional map X <-> Y. For lack of better terms (yes, we considered "domain" and "range") the map is between a set of Xs and a set of Ys.

Note that this class is not thread-safe.

Author:

Borislav Iordanov

Constructor Summary

Constructors

Constructor and Description
TwoWayMap()

Method Summary

Methods

Modifier and Type	Method and Description
void	add(X x, Y y)
void	clear()
boolean	containsX(X x)
boolean	containsY(Y y)
X	getX(Y y)
Set<X>	getXSet()
Y	getY(X x)
Set<Y>	getYSet()
boolean	isEmtpy()
Y	removeX(X x)
X	removeY(Y y)
Iterator<X>	xiterator()
Iterator<Pair<X,Y>>	xyiterator()
Iterator<Y>	yiterator()

Methods inherited from class java.lang.Object

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

Constructor Detail

TwoWayMap

public TwoWayMap()

Method Detail

add

public void add(X x,
       Y y)

xiterator

public Iterator<X> xiterator()

yiterator

public Iterator<Y> yiterator()

xyiterator

public Iterator<Pair<X,Y>> xyiterator()

getYSet

public Set<Y> getYSet()

getXSet

public Set<X> getXSet()

removeX

public Y removeX(X x)

removeY

public X removeY(Y y)

getY

public Y getY(X x)

getX

public X getX(Y y)

containsX

public boolean containsX(X x)

containsY

public boolean containsY(Y y)

isEmtpy

public boolean isEmtpy()

clear

public void clear()