public static int addBook(Book book) throws Exception { int intStat = 0; if (null != book.getIsbn10()) { book.setIsbn13(IsbnUtil.convert(book.getIsbn10())); } else { book.setIsbn10(IsbnUtil.convert(book.getIsbn13())); } String sql = "INSERT INTO Books (ISBN10, ISBN13, Title, Author, " + "Edition, Publisher, Description, YearPublish, " + "Copies) VALUES (?,?,?,?,?,?,?,?,?)"; PreparedStatement ps = Connector.getConnection().prepareStatement(sql); ps.setString(1, book.getIsbn10()); ps.setString(2, book.getIsbn13()); ps.setString(3, book.getTitle()); ps.setString(4, book.getAuthor()); ps.setString(5, book.getEdition()); ps.setString(6, book.getPublisher()); ps.setString(7, book.getDescription()); ps.setInt(8, book.getYearPublish()); ps.setInt(9, book.getCopies()); intStat = ps.executeUpdate(); Connector.close(); return intStat; }
public static boolean isIsbnExisting(String isbn) throws Exception { boolean validate = false; String otherISBN = IsbnUtil.convert(isbn); String sql = ""; PreparedStatement ps = null; if (otherISBN == null) { // otherISBN is ISBN10 and is not existing sql = "SELECT COUNT(*) From Books WHERE Isbn13 = ?"; ps = Connector.getConnection().prepareStatement(sql); ps.setString(1, isbn); } else { sql = "SELECT COUNT(*) From Books WHERE Isbn13 = ? and Isbn10 = ?"; ps = Connector.getConnection().prepareStatement(sql); if (isbn.length() == 13) { ps.setString(1, isbn); ps.setString(2, otherISBN); } else { // argument is ISBN10 ps.setString(1, otherISBN); ps.setString(2, isbn); } } ResultSet rs = ps.executeQuery(); rs.first(); if (rs.getInt(1) > 0) { validate = true; } Connector.close(); return validate; }