public synchronized BookPrx createBook(BookDescription description, Ice.Current current)
throws DatabaseException, BookExistsException {
BookPrx book = isbnToBook(description.isbn, current.adapter);
try {
book.ice_ping();
//
// The book already exists.
//
throw new BookExistsException();
} catch (Ice.ObjectNotExistException e) {
//
// Book doesn't exist, ignore the exception.
//
}
//
// Create a new book Servant.
//
BookI bookI = new BookI(this);
bookI.description = description;
Ice.Identity ident = createBookIdentity(description.isbn);
//
// Create a new Ice Object in the evictor, using the new
// identity and the new Servant.
//
// This can throw EvictorDeactivatedException (which indicates
// an internal error). The exception is currently ignored.
//
_evictor.add(bookI, ident);
try {
//
// Add the isbn number to the authors map.
//
String[] isbnSeq = _authors.get(description.authors);
int length = (isbnSeq == null) ? 0 : isbnSeq.length;
String[] newIsbnSeq = new String[length + 1];
if (isbnSeq != null) {
System.arraycopy(isbnSeq, 0, newIsbnSeq, 0, length);
}
newIsbnSeq[length] = description.isbn;
_authors.fastPut(description.authors, newIsbnSeq);
return book;
} catch (Freeze.DatabaseException ex) {
DatabaseException e = new DatabaseException();
e.message = ex.message;
throw e;
}
}
//
// No locking is necessary since no internal mutable state is
// accessed.
//
public BookPrx findByIsbn(String isbn, Ice.Current current) throws DatabaseException {
try {
BookPrx book = isbnToBook(isbn, current.adapter);
book.ice_ping();
return book;
} catch (Ice.ObjectNotExistException ex) {
//
// Book doesn't exist, return a null proxy.
//
return null;
}
}