added debug output for "Object type or Object type combination not supported" bug.

See also: http://www.yacy-forum.de/viewtopic.php?p=16306#16306

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@1568 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/kelondro/kelondroAbstractOrder.java

@@ -62,7 +62,7 @@ public abstract class kelondroAbstractOrder implements kelondroOrder {
         } else if ((a instanceof String) && (b instanceof String)) {
             return compare(((String) a).getBytes(), ((String) b).getBytes());
         } else
-            throw new IllegalArgumentException("Object type or Object type combination not supported");
+            throw new IllegalArgumentException("Object type or Object type combination not supported: a=" + a + ", b=" + b);
     }
 
 }