--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/uinfo/inundationduration/UedauernPropertiesHelper.java	Tue Jun 26 19:48:35 2018 +0200
@@ -0,0 +1,122 @@
+/** 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.uinfo.inundationduration;
+
+import java.util.HashMap;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Properties;
+
+import org.apache.commons.lang.text.StrSubstitutor;
+import org.dive4elements.artifacts.CallMeta;
+import org.dive4elements.artifacts.common.utils.Config;
+import org.dive4elements.river.artifacts.resources.Resources;
+
+/**
+ * @author Domenico Nardi Tironi
+ *
+ */
+public class UedauernPropertiesHelper {
+
+    private static UedauernPropertiesHelper instance;
+    private final String CONFIG_FILE;
+    private final String rivername;
+    private Integer[] mittelStartEnde = null;
+    private String[] einzeljahre = null;
+    private String mittelUrl = null;
+    private Properties properties = null;
+
+    public UedauernPropertiesHelper(final String rivername) {
+        this.rivername = rivername;
+        this.CONFIG_FILE = makeFileName(rivername);
+    }
+
+    public static synchronized UedauernPropertiesHelper getInstance(final String rivername) {
+        if (UedauernPropertiesHelper.instance == null || !UedauernPropertiesHelper.instance.getRivername().equals(rivername)) {
+
+            UedauernPropertiesHelper.instance = new UedauernPropertiesHelper(rivername);
+        }
+        return UedauernPropertiesHelper.instance;
+    }
+
+    private String getRivername() {
+        return this.rivername;
+    }
+
+    private static final String makeFileName(final String river) {
+        return "uinfo_uedauern_aue_" + river + ".properties";
+    }
+
+    public LinkedHashMap<String, String> getExtraLayers(final CallMeta meta) {
+        final LinkedHashMap<String, String> entries = new LinkedHashMap<>();
+
+        final Integer[] totalEpoch = getMittelStartEnd();
+        final Object[] args = new Object[] { String.valueOf(totalEpoch[0]), String.valueOf(totalEpoch[1]) };
+
+        // final ResourceBundle rb = ResourceBundle.getBundle("Name");
+        entries.put("state.uinfo.totalepoch", Resources.getMsg(meta, "state.uinfo.totalepoch", args)); //
+        // String.valueOf: avoid formatting
+        // (3.333,00
+
+        return entries;
+    }
+
+    private Properties getProperties() {
+        if (this.properties == null) {
+            this.properties = Config.loadProperties(this.CONFIG_FILE);
+        }
+        return this.properties;
+    }
+
+    private final Integer[] getMittelStartEnd() {
+        if (this.mittelStartEnde == null) {
+            final Integer mittel_start = Integer.valueOf(getProperties().get("mittel_start").toString());
+            final Integer mittel_ende = Integer.valueOf(getProperties().get("mittel_ende").toString());
+            this.mittelStartEnde = new Integer[] { mittel_start, mittel_ende }; // lazy
+
+        }
+        return this.mittelStartEnde;
+    }
+
+    public String[] getEinzeljahre() {
+        if (this.einzeljahre == null) { // lazy
+            final Object years = getProperties().get("jahre");
+            if (years != null) {
+                this.einzeljahre = years.toString().split(",");
+            }
+        }
+        return this.einzeljahre;
+    }
+
+    public final String getMittelUrl() {
+        if (this.mittelUrl == null) { // lazy
+            this.mittelUrl = getProperties().get("mittel_url").toString();
+        }
+        return this.mittelUrl;
+    }
+
+    public final String urlFromYear(final int year) {
+        // besser kein lazy-loading, da der user nochmal zurück gehen und das Jahr ändern könnte...
+        final String templateUrl = getProperties().get("url").toString();
+        final Map<String, String> tokens = new HashMap<>();
+        tokens.put("jahr", String.valueOf(year));
+        final StrSubstitutor subst = new StrSubstitutor(tokens);
+        final String yearUrl = subst.replace(templateUrl);
+        return yearUrl;
+    }
+
+    public static boolean fileExistsForRiver(final String river) {
+        final Properties properties = Config.loadProperties(makeFileName(river));
+        if (properties.size() == 0) {
+            return false;
+        }
+        return true;
+    }
+}
\ No newline at end of file