public Boolean addRenting(Renting renting)
{
var db = new MaintainDb();
rentings.Add(renting);
db.insertSingleObject(renting);
return(true);
}
public Boolean addLibrarian(Librarian librarian)
{
var db = new MaintainDb();
foreach (var l in librarians)
{
if (l.firstName == librarian.firstName && l.lastName == librarian.lastName)
{
return(false);
}
}
librarians.Add(librarian);
db.insertSingleObject(librarian);
return(true);
}
public Boolean addBook(Book book)
{
var db = new MaintainDb();
foreach (var b in books)
{
if (b.id == book.id)
{
;
}
}
books.Add(book);
db.insertSingleObject(book);
return(true);
}
public Boolean addAuthor(Author author)
{
var db = new MaintainDb();
if (authors.Count > 0)
{
foreach (var a in authors)
{
if (a.firstName == author.firstName && a.lastName == author.lastName)
{
return(false);
}
}
}
authors.Add(author);
db.insertSingleObject(author);
return(true);
}
