Update Campaigns constructors

General improved constructors with regard to
	agreed upon final UML.

	generateUID() method to set UID for camp
	in constructors based on the new static int
	'numberOfCampaigns'. 0001, 0002, ...

	The type os UID is now String to accommodate
	the leading zeros.

Signed-off-by: HeshamTB <hishaminv@gmail.com>

src/Campaign.java

@@ -18,15 +18,16 @@ public class Campaign {
 
     private static int numeberOfCampains;
 
-    public Campaign(String name, District hotelDistrict) {
-        numeberOfCampains++;
-        this.name = name;
+    public Campaign(District hotelDistrict, int numberofBusses) {
         this.hotelDistrict = hotelDistrict;
-        this.UID = String.format("%4d", numeberOfCampains);
+        generateBusses(numberofBusses);
+        generateUID();
     }
 
-    public Campaign(int numberOfPeople){
-
+    public Campaign(District hotelDistrict, Vehicle[] vehicles) {
+        this.hotelDistrict = hotelDistrict;
+        setVehicles(vehicles);
+        generateUID();
     }
 
     public Route getHousingToDestRoute() {
@@ -45,6 +46,26 @@ public class Campaign {
         this.destToHousingRoute = destToHousingRoute;
     }
 
+    public District getHotelDistrict(){ return this.hotelDistrict; }
+
+    public Date getTimeToLeaveToDest() {
+        return timeToLeaveToDest;
+    }
+
+    public void setTimeToLeaveToDest(Date timeToLeaveToDest) {
+        //TODO: check if date is before or after Project Date
+        this.timeToLeaveToDest = timeToLeaveToDest;
+    }
+
+    public Date getTimeToLeaveToHousing() {
+        return timeToLeaveToHousing;
+    }
+
+    public void setTimeToLeaveToHousing(Date timeToLeaveToHousing) {
+        //TODO: check if date is before or after Project Date
+        this.timeToLeaveToHousing = timeToLeaveToHousing;
+    }
+
     public int getNumberOfBusses() {
         int busses = 0;
         for (Vehicle vehicle : vehicles){
@@ -58,14 +79,15 @@ public class Campaign {
     }
 
     public void setVehicles(Vehicle[] vehicles){
-        /*TODO
-        check if vehicles is not null then set vehicles.
-         */
+        /*TODO: check if vehicles is not null then set vehicles. */
     }
 
     public void generateBusses(int number){
-        /*TODO
-        generate "number"  of busses and set them to vehicles array.
-         */
+        /*TODO: generate "number"  of busses and set them to vehicles array. */
+    }
+
+    private void generateUID() {
+        numeberOfCampains++;
+        this.UID = String.format("%4d", numeberOfCampains);
     }
 }