Use local copy of latest bndlib code for pre-release testing purposes
git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1347815 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/bundleplugin/src/main/java/aQute/lib/collections/Logic.java b/bundleplugin/src/main/java/aQute/lib/collections/Logic.java
new file mode 100644
index 0000000..75322dd
--- /dev/null
+++ b/bundleplugin/src/main/java/aQute/lib/collections/Logic.java
@@ -0,0 +1,22 @@
+package aQute.lib.collections;
+
+import java.util.*;
+
+public class Logic {
+
+ public static <T> Collection<T> retain( Collection<T> first, Collection<T> ... sets) {
+ Set<T> result = new HashSet<T>(first);
+ for ( Collection<T> set : sets ) {
+ result.retainAll(set);
+ }
+ return result;
+ }
+
+ public static <T> Collection<T> remove( Collection<T> first, Collection<T> ... sets) {
+ Set<T> result = new HashSet<T>(first);
+ for ( Collection<T> set : sets ) {
+ result.removeAll(set);
+ }
+ return result;
+ }
+}