public static Book Create(string title, string description, AuthorId authorId, AuthorFullName authorName)
{
var book = new Book(
TypedId.GetNewId <BookId>(), title, description, authorId, authorName);
book.AddEvent(new BookCreated((BookId)book.Id, title, description, authorId));
return(book);
}
public void ChangeAuthor(AuthorFullName author, AuthorId authorId)
{
if (this.AuthorName == author)
{
throw new InvalidOperationException("Author name was already changed");
}
AddEvent(new BookAuthorNameChanged(Id.Value, this.Title.Value, authorId.Value, AuthorId.Value));
this.AuthorId = authorId;
this.AuthorName = author;
}
private Book(BookId id, string title, string description, AuthorId authorId, AuthorFullName authorName)
{
Id = id;
Title = new BookTitle(title);
Description = description;
AuthorId = authorId;
AuthorName = authorName;
State = BookState.InDatabase;
Amount = new BookAmount(0);
}
private Author(AuthorId id, AuthorFullName authorFullName)
{
Id = id;
this.Books = new List <AuthorBookRecord>();
this.authorFullName = authorFullName;
}
public AuthorUpdated(AuthorFullName oldName, AuthorFullName newName, AuthorId authorId)
{
this.oldName = oldName;
this.newName = newName;
this.AuthorId = authorId;
}
