minor modifications to group membership analysis so that it actually works

git-svn-id: http://scm.dspace.org/svn/repo/trunk@2921 9c30dcfa-912a-0410-8fc2-9e0234be79fd

dspace-api/src/main/java/org/dspace/content/DSpaceObject.java

@@ -236,6 +236,18 @@ public abstract class DSpaceObject implements Identifiable
         return false;
     }
 
+    public boolean contains(List<? extends DSpaceObject> dsos, DSpaceObject dso)
+    {
+        for (DSpaceObject obj : dsos)
+        {
+            if (obj.equals(dso))
+            {
+                return true;
+            }
+        }
+        return false;
+    }
+
     public int hashCode()
     {
         return HashCodeBuilder.reflectionHashCode(this);

dspace-api/src/main/java/org/dspace/eperson/Group.java

@@ -169,12 +169,12 @@ public class Group extends DSpaceObject
             return true;
         }
 
-        return epeople.contains(e);
+        return this.contains(epeople, e);
     }
 
     public boolean isMember(Group g)
     {
-        return groups.contains(g);
+        return this.contains(groups, g);
     }
 
     public Group[] getMemberGroups()

dspace-api/src/main/java/org/dspace/eperson/proxy/GroupProxy.java

@@ -155,7 +155,7 @@ public class GroupProxy extends Group
             loadEPeople();
         }
 
-        return epeople.contains(e);
+        return this.contains(epeople, e);
     }
 
     @Override
@@ -166,7 +166,7 @@ public class GroupProxy extends Group
             loadGroups();
         }
 
-        return groups.contains(g);
+        return this.contains(groups, g);
     }
 
     @Override