private void deleteBookGenre(Book book) {
Connection conn;
try {
conn = getConnection();
GenreDAO authorDAO = new GenreDAO(conn);
BookDAO bookDAO = new BookDAO(conn);
List<Genre> allGenres =
(List<Genre>)
authorDAO.read(
"SELECT * FROM tbl_genre JOIN tbl_book_genres ON tbl_genre.genre_id = tbl_book_genres.genre_id WHERE bookId = ?",
new Object[] {book.getBookId()});
ArrayList<Genre> toDelete = new ArrayList<Genre>();
ArrayList<String> actions = new ArrayList<String>();
actions.add("Cancel");
ArrayList<String> questions = new ArrayList<String>();
questions.add("Yes");
questions.add("No");
boolean more = true;
do {
System.out.println("Choose Genre");
int genre = getChoiceNumber(allGenres, actions);
if (genre == -1) {
more = false;
} else {
toDelete.add(allGenres.get(genre - 1));
allGenres.remove(genre - 1);
if (allGenres.isEmpty()) {
more = false;
break;
}
System.out.println("Delete more genres?");
displayOptions(questions);
int next = getInputInt(1, 2);
more = next == 1;
}
} while (more);
List<Author> curAuthors = book.getAuthors();
for (Genre genre : toDelete) {
authorDAO.save(
"DELETE FROM tbl_book_genres WHERE genre_id = ? AND bookId =?",
new Object[] {genre.getGenreId(), book.getBookId()});
}
conn.commit();
conn.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void addBookGenre(Book book) {
Connection conn;
try {
conn = getConnection();
GenreDAO genreDAO = new GenreDAO(conn);
BookDAO bookDAO = new BookDAO(conn);
List<Genre> allGenres =
(List<Genre>)
genreDAO.read(
"SELECT * FROM tbl_author WHERE tbl_author.authorId NOT IN (SELECT tbl_book_authors.authorId FROM tbl_book_authors WHERE bookId=?)",
new Object[] {book.getBookId()});
ArrayList<Genre> newGenres = new ArrayList<Genre>();
ArrayList<String> actions = new ArrayList<String>();
actions.add("Cancel");
ArrayList<String> questions = new ArrayList<String>();
questions.add("Yes");
questions.add("No");
boolean more = true;
do {
System.out.println("Choose Genre");
int author = getChoiceNumber(allGenres, actions);
if (author == -1) {
more = false;
} else {
newGenres.add(allGenres.get(author - 1));
allGenres.remove(author - 1);
if (allGenres.isEmpty()) {
more = false;
break;
}
System.out.println("Add more genres?");
displayOptions(questions);
int next = getInputInt(1, 2);
more = next == 1;
}
} while (more);
for (Genre genre : newGenres) {
bookDAO.save(
"INSERT INTO tbl_book_genres (bookId,genre_id) VALUES(?,?)",
new Object[] {book.getBookId(), genre.getGenreId()});
}
conn.commit();
conn.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// a method updating the genre table
public void update(Genre genre) throws Exception {
save(
"update tbl_genre set genre_name = ? where genre_id = ?",
new Object[] {genre.getGenreName(), genre.getGenreId()});
}
// a method to delete the genre table
public void delete(Genre genre) throws Exception {
save("delete from tbl_genre where genre_id = ?", new Object[] {genre.getGenreId()});
}
// a method to create the Genre table
public void create(Genre genre) throws Exception {
save(
"insert into tbl_genre (genre_id, genre_name) values(?,?)",
new Object[] {genre.getGenreId(), genre.getGenreName()});
}
