public void addBookCopy(int bookId, BookCopy copy) throws LibraryException {
BookCopyConverter conv = new BookCopyConverter();
BookCopyEntity newCopy = conv.fromBean(copy);
newCopy.setBook(em.find(BookEntity.class, (long) bookId));
em.persist(newCopy);
// TODO test
}
public void addBook(Book book, BookCopy copy) throws LibraryException {
BookConverter bookConv = new BookConverter();
BookCopyConverter copyConv = new BookCopyConverter();
BookEntity bookEntity = bookConv.fromBean(book);
BookCopyEntity bookCopyEntity = copyConv.fromBean(copy);
bookCopyEntity.setBorrowedBy(null);
bookCopyEntity.setBook(bookEntity);
em.persist(bookEntity);
em.persist(bookCopyEntity);
}