--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/MainValuesFactory.java	Tue May 03 09:23:17 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/MainValuesFactory.java	Tue May 03 12:05:32 2011 +0000
@@ -1,7 +1,10 @@
 package de.intevation.flys.artifacts.model;
 
+import java.math.BigDecimal;
 import java.util.List;
 
+import org.apache.log4j.Logger;
+
 import org.hibernate.Session;
 import org.hibernate.Query;
 
@@ -16,6 +19,8 @@
  */
 public class MainValuesFactory {
 
+    private static Logger logger = Logger.getLogger(MainValuesFactory.class);
+
     public static List<MainValue> getMainValues(Gauge gauge) {
         Session session = SessionHolder.HOLDER.get();
 
@@ -25,5 +30,51 @@
 
         return query.list();
     }
+
+
+    /**
+     * Returns an array of [days, qs] necessary to create duration curves.
+     *
+     * @param gauge The selected gauge.
+     *
+     * @return a 2dim array of [days, qs] where days is an int[] and qs is
+     * an double[].
+     */
+    public static Object[] getDurationCurveData(Gauge gauge) {
+        Session session = SessionHolder.HOLDER.get();
+
+        Query query = session.createQuery(
+            "select cast(nmv.name as integer) as days, mv.value as q " +
+            "from MainValue as mv " +
+            "join mv.mainValue as nmv " +
+            "join nmv.type mvt " +
+            "where mvt.name = 'D' and mv.gauge.id = :gauge_id " +
+            "order by days");
+
+        query.setParameter("gauge_id", gauge.getId());
+
+        List<Object> results = query.list();
+        int[]        days    = new int[results.size()];
+        double[]     qs      = new double[results.size()];
+
+        int idx = 0;
+
+        for (Object obj: results) {
+            Object[] arr = (Object[]) obj;
+
+            try {
+                int  day = ((Integer)    arr[0]).intValue();
+                double q = ((BigDecimal) arr[1]).doubleValue();
+
+                days[idx] = day;
+                qs[idx++] = q;
+            }
+            catch (NumberFormatException nfe) {
+                logger.warn(nfe, nfe);
+            }
+        }
+
+        return new Object[] { days, qs };
+    }
 }
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