--- a/flys-artifacts/ChangeLog	Tue May 17 16:31:07 2011 +0000
+++ b/flys-artifacts/ChangeLog	Wed May 18 08:04:54 2011 +0000
@@ -1,3 +1,21 @@
+2011-05-18  Ingo Weinzierl <ingo@intevation.de>
+
+	* src/main/java/de/intevation/flys/artifacts/model/NamedObject.java:
+	  New. This object is used to give objects a name.
+
+	* src/main/java/de/intevation/flys/artifacts/model/WQKms.java: Inherit
+	  from NamedObject now. Because we need to display names for those objects
+	  in different places.
+
+	* src/main/java/de/intevation/flys/artifacts/WINFOArtifact.java: The WQKms
+	  objects returned by a waterlevel computation will now have names.
+
+	* src/main/java/de/intevation/flys/exports/WaterlevelExporter.java:
+	  Insert the column names for the WSTs into the WstWriter.
+
+	* src/main/java/de/intevation/flys/exports/WstWriter.java: The column
+	  names are written into the head of the WSTs now.
+
 2011-05-17  Ingo Weinzierl <ingo@intevation.de>
 
 	* src/main/java/de/intevation/flys/artifacts/model/WstLine.java: New. This

--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/WINFOArtifact.java	Tue May 17 16:31:07 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/WINFOArtifact.java	Wed May 18 08:04:54 2011 +0000
@@ -252,12 +252,15 @@
             throw new NullPointerException("No Kms selected.");
         }
 
-        double[] qs = getQs();
+        double[] qs   = getQs();
+        double[] ws   = null;
+        boolean  qSel = true;
+
         if (qs == null) {
             logger.debug("Determine Q values based on a set of W values.");
-
-            double[] ws = getWs();
-            qs = getQsForWs(ws);
+            qSel = false;
+            ws   = getWs();
+            qs   = getQsForWs(ws);
         }
 
         WstValueTable wst = WstValueTableFactory.getTable(river);
@@ -265,9 +268,28 @@
             throw new NullPointerException("No Wst found for selected river.");
         }
 
+        WQKms[] results = computeWaterlevelData(kms, qs, wst);
+
         // TODO Introduce a caching mechanism here!
 
-        return computeWaterlevelData(kms, qs, wst);
+        setWaterlevelNames(results, qSel ? qs : ws, qSel ? "Q" : "W");
+
+        return results;
+    }
+
+
+    /**
+     * Sets the name for waterlevels where each WQKms in <i>r</i> represents a
+     * column.
+     *
+     * @param r The waterlevel columns.
+     * @param v The input values of the computations.
+     * @param wq The WQ mode - can be one of "W" or "Q".
+     */
+    public static void setWaterlevelNames(WQKms[] r, double[] v, String wq) {
+        for (int i = 0; i < v.length; i++) {
+            r[i].setName(wq + "=" + Double.toString(v[i]));
+        }
     }
 
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/NamedObject.java	Wed May 18 08:04:54 2011 +0000
@@ -0,0 +1,32 @@
+package de.intevation.flys.artifacts.model;
+
+import java.io.Serializable;
+
+
+/**
+ * This class represents an object that has a name. The default case would be to
+ * inherit from this class.
+ *
+ * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
+ */
+public class NamedObject implements Serializable {
+
+    /** The name of this object.*/
+    protected String name;
+
+
+    public NamedObject(String name) {
+        this.name = name;
+    }
+
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+
+    public String getName() {
+        return name;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/WQKms.java	Tue May 17 16:31:07 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/model/WQKms.java	Wed May 18 08:04:54 2011 +0000
@@ -1,7 +1,5 @@
 package de.intevation.flys.artifacts.model;
 
-import java.io.Serializable;
-
 import gnu.trove.TDoubleArrayList;
 
 import org.apache.log4j.Logger;
@@ -13,7 +11,7 @@
  *
  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
  */
-public class WQKms implements Serializable {
+public class WQKms extends NamedObject {
 
     private static Logger logger = Logger.getLogger(WQKms.class);
 
@@ -29,12 +27,27 @@
 
 
     public WQKms() {
+        this("");
+    }
+
+
+    public WQKms(String name) {
+        super(name);
+
         this.w   = new TDoubleArrayList();
         this.q   = new TDoubleArrayList();
         this.kms = new TDoubleArrayList();
     }
 
+
     public WQKms(int capacity) {
+        this(capacity, "");
+    }
+
+
+    public WQKms(int capacity, String name) {
+        super(name);
+
         this.w   = new TDoubleArrayList(capacity);
         this.q   = new TDoubleArrayList(capacity);
         this.kms = new TDoubleArrayList(capacity);
@@ -42,6 +55,13 @@
 
 
     public WQKms(double[] kms, double[] qs, double[] ws) {
+        this(kms, qs, ws, "");
+    }
+
+
+    public WQKms(double[] kms, double[] qs, double[] ws, String name) {
+        super(name);
+
         this.w   = new TDoubleArrayList(ws);
         this.q   = new TDoubleArrayList(qs);
         this.kms = new TDoubleArrayList(kms);

--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/WaterlevelExporter.java	Tue May 17 16:31:07 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/WaterlevelExporter.java	Wed May 18 08:04:54 2011 +0000
@@ -171,6 +171,8 @@
             for (WQKms wqkms: tmp) {
                 int size = wqkms != null ? wqkms.size() : 0;
 
+                writer.addColumn(wqkms.getName());
+
                 for (int i = 0; i < size; i++) {
                     result = wqkms.get(i, result);
 

--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/WstWriter.java	Tue May 17 16:31:07 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/WstWriter.java	Wed May 18 08:04:54 2011 +0000
@@ -5,8 +5,10 @@
 import java.io.OutputStreamWriter;
 import java.io.PrintWriter;
 
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.TreeMap;
@@ -34,6 +36,9 @@
     /** The lines that need to be included for the export.*/
     protected Map<Double, WstLine> lines;
 
+    /** The column names.*/
+    protected List<String> columnNames;
+
     /** The locale used to format the values.*/
     protected Locale locale;
 
@@ -53,10 +58,11 @@
      * @param cols The number of columns of the resulting WST.
      */
     public WstWriter(int cols) {
-        this.cols   = cols;
-        this.qs     = new double[cols];
-        this.locale = Locale.US;
-        this.lines  = new HashMap<Double, WstLine>();
+        this.columnNames = new ArrayList<String>(cols);
+        this.lines       = new HashMap<Double, WstLine>();
+        this.qs          = new double[cols];
+        this.locale      = Locale.US;
+        this.cols        = cols;
 
     }
 
@@ -105,6 +111,18 @@
 
 
     /**
+     * Adds a further column name.
+     *
+     * @param name The name of the new column.
+     */
+    public void addColumn(String name) {
+        if (name != null) {
+            columnNames.add(name);
+        }
+    }
+
+
+    /**
      * This method writes the header of the WST.
      *
      * @param writer The PrintWriter that creates the output.
@@ -113,8 +131,13 @@
         logger.debug("WstWriter.writeHeader");
 
         writer.println(cols);
+        writer.print("        ");
 
-        // TODO WRITE DISCHARGE COLUMNS
+        for (String columnName: columnNames) {
+            writer.printf(locale, "%9s", columnName);
+        }
+
+        writer.println();
 
         writer.write("*   KM     ");
         writer.write(DEFAULT_UNIT);