--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/collision/CollisionCalcFacet.java	Tue Jun 19 14:19:32 2018 +0200
@@ -0,0 +1,65 @@
+/** Copyright (C) 2017 by Bundesanstalt für Gewässerkunde
+ * Software engineering by
+ *  Björnsen Beratende Ingenieure GmbH
+ *  Dr. Schumacher Ingenieurbüro für Wasser und Umwelt
+ *
+ * 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.collision;
+
+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.DataFacet;
+import org.dive4elements.river.artifacts.states.DefaultState.ComputeType;
+
+/**
+ * Facet for calculated river bed collision counts
+ *
+ * @author Matthias Schäfer
+ */
+public class CollisionCalcFacet extends DataFacet {
+
+    private static final long serialVersionUID = 1;
+
+    public CollisionCalcFacet() {
+        // required for clone operation deepCopy()
+    }
+
+    public CollisionCalcFacet(final int idx, final String name, final String description, final String yAxisLabelKey, final ComputeType type,
+            final String stateId, final String hash) {
+        super(idx, name, description, type, hash, stateId);
+        this.metaData.put("X", "sinfo.chart.km.xaxis.label");
+        this.metaData.put("Y", yAxisLabelKey);
+    }
+
+    @Override
+    public Object getData(final Artifact artifact, final CallContext context) {
+
+        final D4EArtifact flys = (D4EArtifact) artifact;
+
+        final CalculationResult res = (CalculationResult) flys.compute(context, this.hash, this.stateId, this.type, false);
+
+        final CollisionCalculationResults data = (CollisionCalculationResults) res.getData();
+
+        return data.getResults().get(this.index);
+    }
+
+    /** Copy deeply. */
+    @Override
+    public Facet deepCopy() {
+        // FIXME: why not simply use the full constructor instead?
+        final CollisionCalcFacet copy = new CollisionCalcFacet();
+        // FIXME: why does DataFacet does not override set? Bad access to variables of parent!
+        copy.set(this);
+        copy.type = this.type;
+        copy.hash = this.hash;
+        copy.stateId = this.stateId;
+        return copy;
+    }
+}
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