--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/flys-artifacts/src/main/java/org/dive4elements/river/artifacts/model/DurationCurveFacet.java	Thu Apr 25 12:06:39 2013 +0200
@@ -0,0 +1,98 @@
+package org.dive4elements.river.artifacts.model;
+
+import java.util.List;
+import java.util.ArrayList;
+
+import org.apache.log4j.Logger;
+
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+
+import org.dive4elements.artifactdatabase.state.DefaultFacet;
+import org.dive4elements.artifactdatabase.state.Facet;
+
+import org.dive4elements.river.artifacts.FLYSArtifact;
+import org.dive4elements.river.artifacts.WINFOArtifact;
+
+import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
+
+
+/**
+ * Data of a duration curve.
+ */
+public class DurationCurveFacet extends DefaultFacet {
+
+    private static Logger logger = Logger.getLogger(DurationCurveFacet.class);
+
+    /** Blackboard data provider key for durationcurve (wqday) data. */
+    public static String BB_DURATIONCURVE = "durationcurve";
+
+    /** Blackboard data provider key for km of durationcurve. */
+    public static String BB_DURATIONCURVE_KM = "durationcurve.km";
+
+    public DurationCurveFacet() {
+    }
+
+    public DurationCurveFacet(String name, String description) {
+        super(0, name, description);
+    }
+
+
+    /**
+     * Expose state computation from WINFOArtifact.
+     */
+    public Object getData(Artifact artifact, CallContext context) {
+        logger.debug("Get data for duration curve data");
+
+        WINFOArtifact winfo = (WINFOArtifact)artifact;
+
+        CalculationResult cr = (CalculationResult)winfo.compute(
+            context, ComputeType.ADVANCE, false);
+
+        return cr.getData();
+    }
+
+
+    @Override
+    public List getStaticDataProviderKeys(Artifact art) {
+        List list = new ArrayList();
+        list.add(BB_DURATIONCURVE);
+        list.add(BB_DURATIONCURVE_KM);
+        return list;
+    }
+
+
+    /**
+     * Can provide whatever getData returns and additionally the location.
+     * @param key      will respond on BB_DURATIONCURVE +KM
+     * @param param    ignored
+     * @param context  ignored
+     * @return whatever getData delivers or location.
+     */
+    @Override
+    public Object provideBlackboardData(Artifact artifact,
+        Object key,
+        Object param,
+        CallContext context
+    ) {
+        if (key.equals(BB_DURATIONCURVE)) {
+            return getData(artifact, context);
+        }
+        else if (key.equals(BB_DURATIONCURVE_KM)) {
+            return ((FLYSArtifact)artifact).getDataAsString("ld_locations");
+        }
+        else {
+            return null;
+        }
+    }
+
+
+    /** Create a deep copy. */
+    @Override
+    public Facet deepCopy() {
+        DurationCurveFacet copy = new DurationCurveFacet();
+        copy.set(this);
+        return copy;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :