--- a/gwt-client/src/main/java/org/dive4elements/river/client/shared/model/FixFilter.java	Mon May 28 10:56:57 2018 +0200
+++ b/gwt-client/src/main/java/org/dive4elements/river/client/shared/model/FixFilter.java	Mon May 28 13:22:45 2018 +0200
@@ -11,7 +11,7 @@
 import java.io.Serializable;
 
 /** Probably something like *Access, but from client side. */
-public class FixFilter implements Serializable{
+public class FixFilter implements Serializable {
 
     protected String river;
     protected double fromKm;
@@ -37,41 +37,41 @@
         this.events = new int[0];
     }
 
-    public void setRiver(String river) {
+    public void setRiver(final String river) {
         this.river = river;
     }
 
-    public void setFromKm(double from) {
+    public void setFromKm(final double from) {
         this.fromKm = from;
     }
 
-    public void setToKm(double to) {
+    public void setToKm(final double to) {
         this.toKm = to;
     }
 
-    public void setCurrentKm(double km) {
+    public void setCurrentKm(final double km) {
         this.currentKm = km;
     }
 
-    public void setFromClass(int from) {
+    public void setFromClass(final int from) {
         this.fromClass = from;
     }
 
-    public void setToClass(int to) {
+    public void setToClass(final int to) {
         this.toClass = to;
     }
 
-    public void setFromDate(long from) {
+    public void setFromDate(final long from) {
         this.hasDate = true;
         this.fromDate = from;
     }
 
-    public void setToDate(long to) {
+    public void setToDate(final long to) {
         this.hasDate = true;
         this.toDate = to;
     }
 
-    public void setEvents(int[] ev) {
+    public void setEvents(final int[] ev) {
         this.events = ev;
     }
 
@@ -79,14 +79,22 @@
         return this.river;
     }
 
-    public double getFromKm() {
-        return this.fromKm;
+    public double getLowerKm() {
+        return Math.min(this.fromKm, this.toKm);
     }
 
-    public double getToKm() {
-        return this.toKm;
+    public double getUpperKm() {
+        return Math.max(this.fromKm, this.toKm);
     }
 
+    // public double getFromKm() {
+    // return this.fromKm;
+    // }
+    //
+    // public double getToKm() {
+    // return this.toKm;
+    // }
+
     public double getCurrentKm() {
         return this.currentKm;
     }
@@ -112,7 +120,7 @@
     }
 
     public boolean hasDate() {
-        return fromDate != Long.MIN_VALUE && toDate != Long.MIN_VALUE;
+        return this.fromDate != Long.MIN_VALUE && this.toDate != Long.MIN_VALUE;
     }
 }
 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :