--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/sinfo/tkhcalculation/SoilKindKmValueFinder.java	Wed Feb 28 17:27:15 2018 +0100
@@ -0,0 +1,118 @@
+/* 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.tkhcalculation;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.apache.commons.lang.math.DoubleRange;
+import org.apache.commons.math.ArgumentOutsideDomainException;
+import org.dive4elements.river.model.River;
+
+import gnu.trove.TDoubleArrayList;
+
+/**
+ * @author Matthias Schäfer
+ */
+final class SoilKindKmValueFinder {
+    // /**
+    // * Private log to use here.
+    // */
+    // private static Logger log = Logger.getLogger(SoilKindKmValueFinder.class);
+
+    private final TDoubleArrayList kms = new TDoubleArrayList();
+
+    private final List<SoilKind> values = new ArrayList<>();
+
+    /**
+     * Loads the range of the river's kms with their soil kind.
+     *
+     * @return Whether the load has been successful
+     */
+    public static SoilKindKmValueFinder loadValues(final River river, final DoubleRange kmRange) {
+
+        final SoilKindKmValueFinder instance = new SoilKindKmValueFinder();
+
+        // FIXME Echte Daten aus der Datenbank abfragen
+        instance.addKmKind(0, SoilKind.starr);
+        instance.addKmKind(15.7, SoilKind.mobil);
+        instance.addKmKind(15.8, SoilKind.mobil);
+        instance.addKmKind(15.9, SoilKind.starr);
+        instance.addKmKind(108.7, SoilKind.mobil);
+        instance.addKmKind(108.8, SoilKind.mobil);
+        instance.addKmKind(108.9, SoilKind.starr);
+        instance.addKmKind(119.1, SoilKind.mobil);
+        instance.addKmKind(119.4, SoilKind.mobil);
+        instance.addKmKind(119.5, SoilKind.starr);
+        instance.addKmKind(128.3, SoilKind.mobil);
+        instance.addKmKind(128.9, SoilKind.mobil);
+        instance.addKmKind(129, SoilKind.starr);
+        instance.addKmKind(133.1, SoilKind.mobil);
+        instance.addKmKind(135.9, SoilKind.mobil);
+        instance.addKmKind(136, SoilKind.starr);
+        instance.addKmKind(136.5, SoilKind.mobil);
+        instance.addKmKind(139.9, SoilKind.mobil);
+        instance.addKmKind(140, SoilKind.starr);
+        instance.addKmKind(140.5, SoilKind.mobil);
+        instance.addKmKind(165, SoilKind.mobil);
+        instance.addKmKind(165.1, SoilKind.starr);
+        instance.addKmKind(165.9, SoilKind.mobil);
+        instance.addKmKind(180.8, SoilKind.mobil);
+        instance.addKmKind(180.9, SoilKind.starr);
+        instance.addKmKind(182, SoilKind.mobil);
+        instance.addKmKind(221.3, SoilKind.mobil);
+
+        return instance;
+    }
+
+    private SoilKindKmValueFinder() {
+        /* only instantiate me via static constructor */
+    }
+
+    /***** METHODS *****/
+
+    /**
+     * Searches a km with its soil kind
+     */
+    public SoilKind findSoilKind(final double km) throws ArgumentOutsideDomainException {
+        if ((this.kms == null) || (this.kms.size() == 0))
+            throw new ArgumentOutsideDomainException(km, Double.NaN, Double.NaN);
+
+        // TODO: Voraussetzung für die binäre suche ist, dass nach km sortiert ist.
+        // In diesem Fall könnte man ggf. auch gleich eine bessere Datenklasse benutzen, z.B. eine TreeMap<Double, SoilKind>
+        // (also station -> art), und deren funktionen zum finden verwenden:
+        // final double station = 0.0;
+        // final NavigableMap<Double, SoilKind> data = new TreeMap<>();
+        // data.ceilingEntry(station);
+        // data.floorEntry(station);
+
+        int i = this.kms.binarySearch(km);
+        if (i >= 0) {
+            // Exact km match
+            return this.values.get(i);
+        } else {
+            // Out of range or within km interval
+            if (i < 0)
+                i = -i - 1;
+            if ((i <= 0) || (i >= this.kms.size()))
+                throw new ArgumentOutsideDomainException(km, Double.NaN, Double.NaN);
+            if (km <= ((this.kms.get(i - 1) + this.kms.get(i)) / 2))
+                return this.values.get(i - 1);
+            else
+                return this.values.get(i);
+        }
+    }
+
+    private void addKmKind(final double km, final SoilKind kind) {
+        this.kms.add(km);
+        this.values.add(kind);
+    }
+}
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