/**
* Updates book information.
*
* @param oldBook book, which parameters should be updated.
* @param newBook book, which parameters will be set to old book.
* @throws LibraryProviderException in case of LibraryProviderException
* @throws RemoteException in case of RemoteException
*/
public synchronized void updateBook(Book oldBook, Book newBook)
throws LibraryProviderException, RemoteException {
Book copyOld = oldBook.copyBook();
int newBookCount = newBook.getCount();
int reservedBookCount = recordProvider.getReservedBookCount(oldBook.getId());
if (newBookCount < reservedBookCount) {
throw new LibraryProviderException(
"Can't decrease count of copies of book with ISBN "
+ oldBook.getIsbn()
+ " to "
+ newBookCount
+ ", minimum value is "
+ reservedBookCount);
}
if (newBook.getCount() <= 5) {
try {
bookDAO.updateBook(oldBook.getId(), newBook);
newBook.setId(oldBook.getId());
} catch (LibraryDAOException e) {
throw new LibraryProviderException(e.getMessage(), e);
}
updateISBNCash(copyOld, newBook);
updateSearchCash(copyOld, newBook);
} else {
throw new LibraryProviderException(
"Count of books with ISBN "
+ newBook.getIsbn()
+ " can't be updated up "
+ "to "
+ newBook.getCount()
+ ", maximum count of "
+ "book copies should be less than 5, you can add no more than 5 books.");
}
}
private void checkDeletionChance(Book book, int deleteCount)
throws LibraryProviderException, RemoteException {
int bookCount = getBookCount(book);
int reservedCount = recordProvider.getReservedBookCount(book.getId());
int availableCount = bookCount - reservedCount;
if (availableCount < deleteCount) {
throw new LibraryProviderException(
"Can't delete"
+ deleteCount
+ " book(s) with ISBN '"
+ book.getIsbn()
+ "'. There are "
+ reservedCount
+ " book(s) reserved and "
+ availableCount
+ " book(s) available.");
}
}
