Iterator Mode

Dependency

Aggregation

LunchMenu

-menuItems:ArraryList

+LunchMenu()+CreateIterator():IIterator

DinerMenuIterator

-items:MenuItem[]-index:int = 0

+DinerMenuIterator(MenuItem[] items)+HasNext():bool+Next():object

IMenu

+CreateIterator():IIterator

DinerMenu

-MAX_ITEM_NUM:int = 6-menuItems:MenuItem[]

+DinerMenu()+CreateIterator():IIterator

Realization

public DinerMenu(){ //create menuItems}public IIterator CreateIterator(){ return new DinerMenuIterator(this.menuItems);}

LunchMenuIterator

-items:ArraryList

LunchMenuIterator(ArraryList items)+HasNext():bool+Next():object

Waitress

-lunchMenu:IMenu-dinerMenu:IMenu

public DinerMenuIterator(MenuItem[] items){ this.items = items;}public bool HasNext(){ if(this.index = this.items.length || items[this.index] == null) { return false; }else{ return true; }}public object Next(){ MenuItem menuItem = this.items[this.index]; this.index++; return menuItem;}

IIterator

+HasNext():bool+Next():object

MenuItem

-name:string-desc:string-vagetarian:bool-price:double

+MenuItem(...)