--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/HistoricalWQTimerange.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,86 @@
+package org.dive4elements.river.artifacts.model;
+
+import gnu.trove.TDoubleArrayList;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+
+/**
+ * A subclass of WQTimerange that stores besides W, Q and Timerange values
+ * another double value (difference to something).
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class HistoricalWQTimerange extends WQTimerange {
+
+    public static class HistoricalTimerangeItem extends TimerangeItem {
+        public double diff;
+
+        public HistoricalTimerangeItem (Timerange timerange, double q, double w, double diff) {
+            super(timerange, q, w);
+            this.diff = diff;
+        }
+
+        public double[] get(double[] wq) {
+            if (wq.length >= 3) {
+                wq[0] = w;
+                wq[1] = q;
+                wq[2] = diff;
+            }
+            else if (wq.length >= 2) {
+                return super.get(wq);
+            }
+
+            return wq;
+        }
+    }
+
+    protected TDoubleArrayList diffs;
+
+
+    public HistoricalWQTimerange(String name) {
+        super(name);
+
+        diffs = new TDoubleArrayList();
+    }
+
+
+    public void add(double w, double q, double diff, Timerange t) {
+        ws.add(w);
+        qs.add(q);
+        timeranges.add(t);
+        diffs.add(diff);
+    }
+
+
+    /**
+     * This method requires a 3dim double array for <i>res</i>!
+     */
+    @Override
+    public double[] get(int idx, double[] res) {
+        res[0] = ws.getQuick(idx);
+        res[1] = qs.getQuick(idx);
+        res[2] = diffs.getQuick(idx);
+
+        return res;
+    }
+
+
+    public double[] getDiffs() {
+        return diffs.toNativeArray();
+    }
+
+    @Override
+    public List<TimerangeItem> sort() {
+        ArrayList<TimerangeItem> items = new ArrayList<TimerangeItem>(timeranges.size());
+        for (int i = 0, n = size(); i < n; i++) {
+            items.add(new HistoricalTimerangeItem(getTimerange(i), getQ(i), getW(i), diffs.get(i)));
+        }
+
+        Collections.sort(items);
+        return items;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :