/**
* Creates new book in book storage. If book with the isbn as in new book is already exists,
* updates count of books with appropriate isbn. Doesn't allow to create more than 5 copies of
* books with the same isbn.
*
* @param book for creation
* @throws LibraryProviderException in case of LibraryProviderException
* @throws RemoteException in case of RemoteException
*/
public synchronized void createBook(Book book) throws LibraryProviderException, RemoteException {
checkISBNCount(book);
Book sameBook = isbnCash.get(book.getIsbn());
if (sameBook == null) {
try {
bookDAO.createBook(book);
} catch (LibraryDAOException e) {
throw new LibraryProviderException(e.getMessage(), e);
}
addBookToSearchCash(book);
addToISBNCash(book);
} else {
book.setCount(sameBook.getCount() + book.getCount());
book.setId(sameBook.getId());
try {
bookDAO.updateBook(sameBook.getId(), book);
} catch (LibraryDAOException e) {
throw new LibraryProviderException(e.getMessage(), e);
}
updateISBNCash(sameBook, book);
updateSearchCash(sameBook, book);
}
}
public synchronized void deleteBooks(Book book, int deleteCount)
throws LibraryProviderException, RemoteException {
int bookCount = getBookCount(book);
checkDeletionChance(book, deleteCount);
if (bookCount <= deleteCount) {
try {
bookDAO.delete(book.getId());
} catch (LibraryDAOException e) {
throw new LibraryProviderException(e.getMessage(), e);
}
removeFromISBNCash(book);
removeBookFromSearchCash(book);
} else {
Book copy = book.copyBook();
book.setCount(bookCount - deleteCount);
try {
bookDAO.updateBook(book.getId(), book);
} catch (LibraryDAOException e) {
throw new LibraryProviderException(e.getMessage(), e);
}
updateISBNCash(copy, book);
updateSearchCash(copy, book);
}
}