public void SeeBooks(IBookCollection library, IBookIterator iterator)
{
for (Book item = iterator.First(); !iterator.IsDone; item = iterator.Next())
{
Console.WriteLine(iterator.CurrentItem.Name);
item.Print();
}
}
public void SeeBooks(Library library)
{
IBookIterator iterator = library.CreateNumerator();
while (iterator.HasNext())
{
Console.WriteLine(iterator.Next().Name);
}
}
public void SeeBooks(Library library)
{
IBookIterator iterator = library.CreateIterator();
while (iterator.HasNext())
{
Book book = iterator.Next();
Console.WriteLine(book.Name);
}
}
public string SeeBook(Library library)
{
string result = "";
IBookIterator bookIterator = library.CreateNumerator();
while (bookIterator.HasNext())
{
Book book = bookIterator.Next();
result = string.Format("{0}{1}{2}", result, Environment.NewLine, book.Name);
}
return(result);
}
static void Main(string[] args)
{
IBookCollection library = new Library();
IIteratorFactory iteratorFactory = new IteratorFactory();
IBookIterator iteratorNormal = library.CreateIterator(iteratorFactory, BookIteratorType.normal);
IBookIterator iteratorReverse = library.CreateIterator(iteratorFactory, BookIteratorType.reverse);
library[0] = new Book("book01");
library[1] = new Book("book02");
Reader reader = new Reader();
reader.SeeBooks(library, iteratorNormal);
reader.SeeBooks(library, iteratorReverse);
Console.ReadKey();
}
public virtual IBookIterator Create(IBookCollection collection, BookIteratorType type)
{
IBookIterator iterator = null;
switch (type)
{
case BookIteratorType.normal:
iterator = new LibraryIterator(collection);
break;
case BookIteratorType.reverse:
iterator = new LibraryReverseIterator(collection);
break;
default:
iterator = new LibraryIterator(collection);
break;
}
return(iterator);
}
static void Main(string[] args)
{
Library library = new Library();
Console.WriteLine("===Part1 with reader===");
Reader reader = new Reader();
reader.SeeBooks(library);
Console.WriteLine();
Console.WriteLine("===Part2 without reader===");
IBookIterator iterator = library.CreateNumerator();
while (iterator.HasNext())
{
Book book = iterator.Next();
Console.WriteLine(book.Name);
}
Console.Read();
}
