org.eigenbase.util
Class Pair<T1,T2>

java.lang.Object
  org.eigenbase.util.Pair<T1,T2>

public class Pair<T1,T2>
extends Object

Pair of objects.

Since:

Oct 17, 2007

Version:

$Id: //open/dev/farrago/src/org/eigenbase/util/Pair.java#4 $

Author:

jhyde

Field Summary

T1	left
T2	right

Constructor Summary

Pair(T1 left, T2 right)
Creates a Pair.

Method Summary

boolean	equals(Object obj)
int	hashCode()
static <K,V> Map<K,V>	toMap(Collection<Pair<K,V>> pairs) Converts a collection of Pairs into a Map.

Methods inherited from class java.lang.Object

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

Field Detail

left

public final T1 left

right

public final T2 right

Constructor Detail

Pair

public Pair(T1 left,
            T2 right)

Creates a Pair.

Parameters:

left - left value

right - right value

Method Detail

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toMap

public static <K,V> Map<K,V> toMap(Collection<Pair<K,V>> pairs)

Converts a collection of Pairs into a Map.

This is an obvious thing to do because Pair is similar in structure to Map.Entry.

The map contains a copy of the collection of Pairs; if you change the collection, the map does not change.

Parameters:

pairs - Collection of Pair objects

Returns:

map with the same contents as the collection