--- a/artifacts/src/main/java/org/dive4elements/river/artifacts/states/fixation/FixAnalysisCompute.java	Mon Aug 19 12:44:11 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/states/fixation/FixAnalysisCompute.java	Mon Aug 19 12:45:27 2013 +0200
@@ -11,9 +11,7 @@
 import java.text.DateFormat;
 import java.util.Collection;
 import java.util.Date;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 import org.apache.log4j.Logger;
 
@@ -46,6 +44,7 @@
 import org.dive4elements.river.artifacts.states.DefaultState;
 import org.dive4elements.river.utils.Formatter;
 import org.dive4elements.river.utils.IdGenerator;
+import org.dive4elements.river.utils.UniqueDateFormatter;
 
 /**
  * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
@@ -340,46 +339,5 @@
                 I18N_DEVIATION)));
         return res;
     }
-
-    /** Little hack to format dates unique if they collide. */
-    private static class UniqueDateFormatter {
-
-        private DateFormat df;
-        private DateFormat lf;
-        private Map<String, int[]> collisions;
-
-        UniqueDateFormatter(
-            DateFormat df,
-            DateFormat lf,
-            Collection<Date> dates
-        ) {
-            this.df = df;
-            this.lf = lf;
-            collisions = build(dates);
-        }
-
-        private Map<String, int []> build(Collection<Date> dates) {
-            Map<String, int []> collisions = new HashMap<String, int[]>();
-            for (Date d: dates) {
-                String s = df.format(d);
-                int [] count = collisions.get(s);
-                if (count == null) {
-                    collisions.put(s, count = new int[1]);
-                }
-                if (++count[0] > 1) {
-                    log.debug("date collsion found: " + d);
-                }
-            }
-            return collisions;
-        }
-
-        String format(Date date) {
-            String s = df.format(date);
-            int [] count = collisions.get(s);
-            return count == null || count[0] < 2
-                ? s
-                : lf.format(date);
-        }
-    } // class UniqueDateFormatter
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :