public Book findBookByTitle(String title) throws Exception {
    JDO jdo = new JDO("alternativepersistencedb"); 
    jdo.loadConfiguration("database.xml"); 
    Database db = jdo.getDatabase(); 
    db.begin(); 
    OOLQuery query = db.getOQLQuery("SELECT b FROM book.Book b WHERE
             title=$l");
    query.bind("Alternative Persistence Systems"); 
    OueryResults results = query.execute(); 
    // zakadamy, e pierwsza znaleziona ksika jest t , o ktr chodzio
    Book book = (Book) results.next(); 
    db.commit(); 
    db.close(); 
    return book;
}
