Exemplo n.º 1
0
 @Override
 public boolean deleteBook(Book book) {
   Document original = __wrapper.getDocument();
   Document doc = __wrapper.getDocument();
   try {
     doc = __wrapper.deleteEntry(doc, "isbn", book.getIsbn());
     if (doc == null) {
       return false;
     } else {
       __wrapper.commit(doc);
       return true;
     }
   } catch (Exception e) {
     e.printStackTrace();
     __wrapper.rollback(original);
     return false;
   }
 }
Exemplo n.º 2
0
 @Override
 public List<Book> findBooksByTitle(String title) {
   Document doc = __wrapper.getDocument();
   List<Book> books = new ArrayList<Book>();
   try {
     List<Map<String, String>> list = __wrapper.filterEntries(doc, "title", title);
     for (Map<String, String> map : list) {
       Book book =
           new Book(
               map.get("isbn"),
               map.get("publisher"),
               map.get("title"),
               Integer.parseInt(map.get("year")),
               map.get("authorIds"));
       books.add(book);
     }
   } catch (Exception e) {
     e.printStackTrace();
   }
   return books;
 }
Exemplo n.º 3
0
 @Override
 public List<Book> getAllBooks() {
   List<Book> rval = new ArrayList<Book>();
   try {
     Document doc = __wrapper.getDocument();
     List<Map<String, String>> allBooks = __wrapper.getAllEntries(doc);
     for (Map<String, String> map : allBooks) {
       Book book =
           new Book(
               map.get("isbn"),
               map.get("publisher"),
               map.get("title"),
               Integer.parseInt(map.get("year")),
               map.get("authorIds"));
       rval.add(book);
     }
   } catch (Exception e) {
     e.printStackTrace();
     return new ArrayList<Book>();
   }
   return rval;
 }
Exemplo n.º 4
0
 @Override
 public Book findByPrimaryKey(String bookIsbn) {
   Document doc = __wrapper.getDocument();
   try {
     Map<String, String> map = __wrapper.findEntry(doc, "isbn", bookIsbn + "");
     if (map == null) {
       return null;
     } else {
       Book book =
           new Book(
               map.get("isbn"),
               map.get("publisher"),
               map.get("title"),
               Integer.parseInt(map.get("year")),
               map.get("authorIds"));
       return book;
     }
   } catch (Exception e) {
     e.printStackTrace();
     return null;
   }
 }
Exemplo n.º 5
0
  @Override
  public Book updateBook(Book book) {
    Document original = __wrapper.getDocument();
    Document doc = __wrapper.getDocument();

    try {
      Map<String, String> values = new HashMap<String, String>();
      values.put("isbn", book.getIsbn());
      values.put("publisher", book.getPublisher());
      values.put("title", book.getTitle());
      values.put("year", book.getYear() + "");
      values.put("authorIds", Utility.getInstance().join(",", book.getAuthorIds()));

      doc = __wrapper.updateEntry(doc, values, "isbn", book.getIsbn());
      __wrapper.commit(doc);
    } catch (Exception e) {
      e.printStackTrace();
      __wrapper.rollback(original);
      return null;
    }
    return book;
  }