--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java	Fri Feb 03 12:16:59 2012 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java	Fri Feb 03 13:05:25 2012 +0000
@@ -166,24 +166,7 @@
         }
     } // class AxisDataset
 
-
-    /** Override to make axis information available. */
-    protected YAxisWalker getYAxisWalker() {
-        return new YAxisWalker() {
-            /** Get number of items. */
-            @Override
-            public int length() {
-                return 0;
-            }
-
-            /** Get identifier for this index. */
-            @Override
-            public String getId(int idx) {
-                return null;
-            }
-        };
-    }
-
+    protected abstract YAxisWalker getYAxisWalker();
 
     /** The logger that is used in this generator. */
     private static Logger logger = Logger.getLogger(XYChartGenerator.class);