StationsKey in SSP geaendert.

src/main/java/de/uniluebeck/mi/projmi6/model/StationsHistorie.java

@@ -2,6 +2,7 @@ package de.uniluebeck.mi.projmi6.model;
 
 import javafx.beans.property.SimpleIntegerProperty;
 import javafx.beans.property.SimpleObjectProperty;
+import javafx.beans.property.SimpleStringProperty;
 
 import java.time.LocalDateTime;
 
@@ -14,7 +15,7 @@ public class StationsHistorie extends Version {
     private Fall fall;
     private int fallID; // platte Objektstruktur!
     private Station station;
-    private String stationKey; // platte Objektstruktur!
+    private SimpleStringProperty stationKey = new SimpleStringProperty(this, "stationskey"); // platte Objektstruktur!
     private SimpleIntegerProperty StatHistID = new SimpleIntegerProperty(this, "stathistid");
 
     public LocalDateTime getAufnahmeDatum() {
@@ -78,10 +79,14 @@ public class StationsHistorie extends Version {
     }
 
     public String getStationKey() {
-        return stationKey;
+        return stationKey.get();
     }
 
     public void setStationKey(String stationKey) {
-        this.stationKey = stationKey;
+        this.stationKey.set(stationKey);
+    }
+
+    public SimpleStringProperty stationKeyProperty() {
+        return stationKey;
     }
 }