--- a/flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/HistoricalDischargeComputeState.java	Wed Feb 01 11:07:22 2012 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/states/HistoricalDischargeComputeState.java	Wed Feb 01 11:14:24 2012 +0000
@@ -1,24 +1,36 @@
 package de.intevation.flys.artifacts.states;
 
+import java.util.List;
 
 import org.w3c.dom.Element;
 
+import org.apache.log4j.Logger;
+
 import de.intevation.artifacts.Artifact;
 import de.intevation.artifacts.CallContext;
 
 import de.intevation.artifacts.common.utils.XMLUtils.ElementCreator;
 
-
+import de.intevation.artifactdatabase.state.Facet;
 
-
-
-
+import de.intevation.flys.artifacts.FLYSArtifact;
+import de.intevation.flys.artifacts.WINFOArtifact;
+import de.intevation.flys.artifacts.model.CalculationResult;
+import de.intevation.flys.artifacts.model.FacetTypes;
+import de.intevation.flys.artifacts.model.HistoricalDischargeFacet;
 
 
 /**
  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
  */
-public class HistoricalDischargeComputeState extends DefaultState {
+public class HistoricalDischargeComputeState
+extends      DefaultState
+implements   FacetTypes
+{
+
+    private static final Logger logger =
+        Logger.getLogger(HistoricalDischargeComputeState.class);
+
 
     @Override
     protected void appendItems(
@@ -30,5 +42,36 @@
     ) {
         // TODO IMPLEMENT ME
     }
+
+
+    @Override
+    public Object computeAdvance(
+        FLYSArtifact artifact,
+        String       hash,
+        CallContext  context,
+        List<Facet>  facets,
+        Object       old
+    ) {
+        logger.debug("HistoricalDischargeComputeState.computeAdvance");
+
+        WINFOArtifact winfo = (WINFOArtifact) artifact;
+
+        CalculationResult res = old instanceof CalculationResult
+            ? (CalculationResult) old
+            : winfo.getHistoricalDischargeData();
+
+        if (facets == null) {
+            return res;
+        }
+
+        logger.debug("TODO: IMPLEMENT ME!");
+
+        HistoricalDischargeFacet facet = new HistoricalDischargeFacet(
+            0, HISTORICAL_DISCHARGE_Q, "THE NEW HIST Q FACET DESC");
+
+        facets.add(facet);
+
+        return res;
+    }
 }
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