dataservice by ying

src/main/java/de/rwth/swc/sqa/DataService.java

+package de.rwth.swc.sqa;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import de.rwth.swc.sqa.model.Customer;
+import de.rwth.swc.sqa.model.DiscountCard;
+import de.rwth.swc.sqa.model.Ticket;
+
+public class DataService {
+	public static  List<Customer> customerList = new ArrayList<Customer>();
+	public static Map<Long, List<DiscountCard>> discountCardMap = new HashMap<Long, List<DiscountCard>>();
+	public static List<Ticket> ticketList = new ArrayList<Ticket>();
+	
+}