org.eclipse.viatra.query.runtime.base.itc.alg.incscc

Class CollectionHelper

java.lang.Object

org.eclipse.viatra.query.runtime.base.itc.alg.incscc.CollectionHelper

public class CollectionHelper
extends java.lang.Object

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

clone, equals, finalize, 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