--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/flood_duration/FloodDurationCurveFacet.java	Thu Jul 12 18:09:48 2018 +0200
@@ -0,0 +1,120 @@
+/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
+ * Software engineering by Intevation GmbH
+ *
+ * This file is Free Software under the GNU AGPL (>=v3)
+ * and comes with ABSOLUTELY NO WARRANTY! Check out the
+ * documentation coming with Dive4Elements River for details.
+ */
+
+package org.dive4elements.river.artifacts.sinfo.flood_duration;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.log4j.Logger;
+import org.dive4elements.artifactdatabase.state.DefaultFacet;
+import org.dive4elements.artifactdatabase.state.Facet;
+import org.dive4elements.artifacts.Artifact;
+import org.dive4elements.artifacts.CallContext;
+import org.dive4elements.river.artifacts.D4EArtifact;
+import org.dive4elements.river.artifacts.model.CalculationResult;
+import org.dive4elements.river.artifacts.model.WQDay;
+import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
+
+
+/**
+ * Data of a duration curve.
+ */
+public class FloodDurationCurveFacet extends DefaultFacet {
+
+    private static Logger log = Logger.getLogger(FloodDurationCurveFacet.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 FloodDurationCurveFacet() {
+    }
+
+    public FloodDurationCurveFacet(final String name, final String description) {
+        super(0, name, description);
+    }
+
+
+    /**
+     * Expose state computation from SINFOArtifact.
+     */
+    @Override
+    public Object getData(final Artifact artifact, final CallContext context) {
+
+        log.debug("Get data for flood duration curve data");
+
+        final D4EArtifact flys = (D4EArtifact) artifact;
+
+        final CalculationResult res = (CalculationResult) flys.compute(context, ComputeType.ADVANCE, false);
+
+        final FloodDurationCalculationResults data = (FloodDurationCalculationResults) res.getData();
+
+        return data.getDurationCurve();
+        // return getTestData();
+    }
+
+    private WQDay getTestData() {
+        final int[] days = new int[366];
+        final double[] ws = new double[366];
+        final double[] qs = new double[366];
+        for (int i = 0; i <= 365; i++) {
+            days[i] = i;
+            final double x = (i - 182.5) / 182.5;
+            ws[i] = 102.0 - (Math.pow(x, 5) + x);
+            qs[i] = 1600.0 - 800 * (Math.pow(x, 9) + x);
+        }
+        return new WQDay(days, ws, qs);
+    }
+
+
+    @Override
+    public List getStaticDataProviderKeys(final Artifact art) {
+        final 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(final Artifact artifact,
+            final Object key,
+            final Object param,
+            final CallContext context
+            ) {
+        if (key.equals(BB_DURATIONCURVE)) {
+            return getData(artifact, context);
+        }
+        else if (key.equals(BB_DURATIONCURVE_KM)) {
+            return ((D4EArtifact)artifact).getDataAsString("ld_locations");
+        }
+        else {
+            return null;
+        }
+    }
+
+
+    /** Create a deep copy. */
+    @Override
+    public Facet deepCopy() {
+        final FloodDurationCurveFacet copy = new FloodDurationCurveFacet();
+        copy.set(this);
+        return copy;
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :