org.eclipse.incquery.runtime.base.itc.alg.incscc

Class CollectionHelper

java.lang.Object

org.eclipse.incquery.runtime.base.itc.alg.incscc.CollectionHelper

public class CollectionHelper
extends java.lang.Object

Author:

Tamas Szabo

Constructor Summary

Constructors

Constructor and Description
CollectionHelper()

Method Summary

Modifier and Type	Method and Description
static <V> java.util.Set<V>	difference(java.util.Set<V> set1, java.util.Set<V> set2) Returns the difference of two sets (S1\S2).
static <V> java.util.Set<V>	intersection(java.util.Set<V> set1, java.util.Set<V> set2) Returns the intersection of two sets.

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionHelper

public CollectionHelper()

Method Detail

intersection

public static <V> java.util.Set<V> intersection(java.util.Set<V> set1,
                                                java.util.Set<V> set2)

Returns the intersection of two sets. It calls Set.retainAll(java.util.Collection) but returns a new set containing the elements of the intersection.

Parameters:

set1 - the first set

set2 - the second set

Returns:

the intersection of the sets

difference

public static <V> java.util.Set<V> difference(java.util.Set<V> set1,
                                              java.util.Set<V> set2)

Returns the difference of two sets (S1\S2). It calls Set.removeAll(java.util.Collection) but returns a new set containing the elements of the difference.

Parameters:

set1 - the first set

set2 - the second set

Returns:

the difference of the sets