preparing to delete locations

Signed-off-by: Stephan Richter <s.richter@srsoftware.de>

core/src/main/java/de/srsoftware/umbrella/core/model/DbLocation.java

@@ -50,11 +50,11 @@ public class DbLocation extends Location {
 
 	@Override
 	public Map<String, Object> toMap() {
-		return Map.of(
-				OWNER,owner.toMap(),
-				ID,id(),
-				NAME,name,
-				DESCRIPTION,description);
+		var map = super.toMap();
+		map.put(OWNER,owner.toMap());
+		map.put(NAME,name);
+		map.put(DESCRIPTION,description);
+		return map;
 	}
 
 	@Override

core/src/main/java/de/srsoftware/umbrella/core/model/Location.java

@@ -9,16 +9,27 @@ import static java.text.MessageFormat.format;
 import de.srsoftware.tools.Mappable;
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.util.HashMap;
 import java.util.Map;
 
 public class Location implements Mappable {
 
-	private final long id;
+	private long id;
 
 	public Location(long id){
 		this.id = id;
 	}
 
+	public long id(){
+		return id;
+	}
+
+	public <T extends Location> T id(long newValue){
+		id = newValue;
+		//noinspection unchecked
+		return (T) this;
+	}
+
 	public static Location of(ResultSet rs) throws SQLException {
 		return new Location(rs.getLong(LOCATION_ID));
 	}
@@ -31,13 +42,11 @@ public class Location implements Mappable {
 		return stockService().loadLocation(id());
 	}
 
-	public long id(){
-		return id;
-	}
-
 	@Override
 	public Map<String, Object> toMap() {
-		return Map.of(ID,id);
+		var map = new HashMap<String,Object>();
+		map.put(ID,id);
+		return map;
 	}
 
 	@Override