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Posted to commits@jena.apache.org by an...@apache.org on 2012/08/15 14:01:43 UTC
svn commit: r1373360 -
/jena/trunk/jena-arq/src/main/java/org/openjena/atlas/lib/SetUtils.java
Author: andy
Date: Wed Aug 15 12:01:43 2012
New Revision: 1373360
URL: http://svn.apache.org/viewvc?rev=1373360&view=rev
Log:
Add a test for disjointness of two sets.
Modified:
jena/trunk/jena-arq/src/main/java/org/openjena/atlas/lib/SetUtils.java
Modified: jena/trunk/jena-arq/src/main/java/org/openjena/atlas/lib/SetUtils.java
URL: http://svn.apache.org/viewvc/jena/trunk/jena-arq/src/main/java/org/openjena/atlas/lib/SetUtils.java?rev=1373360&r1=1373359&r2=1373360&view=diff
==============================================================================
--- jena/trunk/jena-arq/src/main/java/org/openjena/atlas/lib/SetUtils.java (original)
+++ jena/trunk/jena-arq/src/main/java/org/openjena/atlas/lib/SetUtils.java Wed Aug 15 12:01:43 2012
@@ -59,4 +59,24 @@ public class SetUtils
s3.removeAll(s2) ;
return s3 ;
}
+
+ /** Return true if s1 and s2 are disjoint */
+ public static <T> boolean isDisjoint(Set<? extends T> s1, Set<? extends T> s2)
+ {
+ Set<? extends T> x = s1 ;
+ Set<? extends T> y = s2 ;
+ if ( s1.size() < s2.size() )
+ {
+ x = s2 ;
+ y = s1 ;
+ }
+
+ for ( T item : x )
+ {
+ if ( y.contains(item))
+ return false ;
+ }
+ return true ;
+ }
}
+