public void Add(Book b)
{
string result = BookFields.Validate(b);
if (result != null)
{
throw new ValidationException(result);
}
lock (lockObj)
{
b.id = lastId + 1;
books.Add(b.id, (Book)b.Clone());
books[b.id].image = b.image;
lastId++;
}
}
public void Update(Book b)
{
string result = BookFields.Validate(b);
if (result != null)
{
throw new ValidationException(result);
}
lock (lockObj)
{
if (!books.ContainsKey(b.id))
{
throw new NotFoundException();
}
var clone = (Book)b.Clone();
clone.image = (b.image != null && b.image.Length > 0) ? b.image : books[b.id].image;
books[b.id] = clone;
}
}
