public void addCopies(Set<BookCopy> bookCopiesSet) throws BookStoreException {
int ISBN, numCopies;
if (bookCopiesSet == null) {
throw new BookStoreException(BookStoreConstants.NULL_INPUT);
}
try {
bsLock.updateLock().lock();
for (BookCopy bookCopy : bookCopiesSet) {
ISBN = bookCopy.getISBN();
numCopies = bookCopy.getNumCopies();
if (BookStoreUtility.isInvalidISBN(ISBN))
throw new BookStoreException(BookStoreConstants.ISBN + ISBN + BookStoreConstants.INVALID);
if (!bookMap.containsKey(ISBN))
throw new BookStoreException(BookStoreConstants.ISBN + ISBN + BookStoreConstants.INVALID);
if (BookStoreUtility.isInvalidNoCopies(numCopies))
throw new BookStoreException(
BookStoreConstants.NUM_COPIES + numCopies + BookStoreConstants.INVALID);
}
bsLock.writeLock().lock();
BookStoreBook book;
// Update the number of copies
for (BookCopy bookCopy : bookCopiesSet) {
ISBN = bookCopy.getISBN();
numCopies = bookCopy.getNumCopies();
book = bookMap.get(ISBN);
book.addCopies(numCopies);
}
} finally {
bsLock.writeLock().unlock();
bsLock.updateLock().unlock();
}
}
public void updateEditorPicks(Set<BookEditorPick> editorPicks) throws BookStoreException {
// Check that all ISBNs that we add/remove are there first.
if (editorPicks == null) {
throw new BookStoreException(BookStoreConstants.NULL_INPUT);
}
int ISBNVal;
try {
bsLock.updateLock().lock();
for (BookEditorPick editorPickArg : editorPicks) {
ISBNVal = editorPickArg.getISBN();
if (BookStoreUtility.isInvalidISBN(ISBNVal))
throw new BookStoreException(
BookStoreConstants.ISBN + ISBNVal + BookStoreConstants.INVALID);
if (!bookMap.containsKey(ISBNVal))
throw new BookStoreException(
BookStoreConstants.ISBN + ISBNVal + BookStoreConstants.NOT_AVAILABLE);
}
bsLock.writeLock().lock();
for (BookEditorPick editorPickArg : editorPicks) {
bookMap.get(editorPickArg.getISBN()).setEditorPick(editorPickArg.isEditorPick());
}
} finally {
bsLock.writeLock().unlock();
bsLock.updateLock().unlock();
}
return;
}
public void buyBooks(Set<BookCopy> bookCopiesToBuy) throws BookStoreException {
if (bookCopiesToBuy == null) {
throw new BookStoreException(BookStoreConstants.NULL_INPUT);
}
// Check that all ISBNs that we buy are there first.
int ISBN;
BookStoreBook book;
Boolean saleMiss = false;
try {
bsLock.updateLock().lock();
for (BookCopy bookCopyToBuy : bookCopiesToBuy) {
ISBN = bookCopyToBuy.getISBN();
if (BookStoreUtility.isInvalidISBN(ISBN))
throw new BookStoreException(BookStoreConstants.ISBN + ISBN + BookStoreConstants.INVALID);
if (!bookMap.containsKey(ISBN))
throw new BookStoreException(
BookStoreConstants.ISBN + ISBN + BookStoreConstants.NOT_AVAILABLE);
book = bookMap.get(ISBN);
if (!book.areCopiesInStore(bookCopyToBuy.getNumCopies())) {
book.addSaleMiss(); // If we cannot sell the copies of the
// book
// its a miss
saleMiss = true;
}
}
// We throw exception now since we want to see how many books in the
// order incurred misses which is used by books in demand
if (saleMiss)
throw new BookStoreException(BookStoreConstants.BOOK + BookStoreConstants.NOT_AVAILABLE);
bsLock.writeLock().lock();
// Then make purchase
for (BookCopy bookCopyToBuy : bookCopiesToBuy) {
book = bookMap.get(bookCopyToBuy.getISBN());
book.buyCopies(bookCopyToBuy.getNumCopies());
}
} finally {
bsLock.writeLock().unlock();
bsLock.updateLock().unlock();
}
return;
}
@Override
public List<StockBook> getBooksInDemand() throws BookStoreException {
// TODO Auto-generated method stub
bsLock.updateLock().lock();
List<StockBook> listBooksInDemand = new ArrayList<StockBook>();
Collection<BookStoreBook> books = bookMap.values();
if (books.isEmpty()) {
throw new BookStoreException("No books in the bookstore");
}
try {
for (BookStoreBook book : books) {
if (book.hadSaleMiss()) {
listBooksInDemand.add(book.immutableStockBook());
}
}
} finally {
bsLock.updateLock().unlock();
}
return listBooksInDemand;
}
@Override
public void rateBooks(Set<BookRating> bookRating) throws BookStoreException {
// TODO Auto-generated method stub
// lock update lock, only allow read
bsLock.updateLock().lock();
try {
/* Check if the input is valid */
if (bookRating == null) throw new BookStoreException(BookStoreConstants.NULL_INPUT);
int ISBN, rating;
BookStoreBook book;
for (BookRating br : bookRating) {
ISBN = br.getISBN();
rating = br.getRating();
if (BookStoreUtility.isInvalidISBN(ISBN))
throw new BookStoreException(BookStoreConstants.ISBN + ISBN + BookStoreConstants.INVALID);
if (!bookMap.containsKey(ISBN))
throw new BookStoreException(
BookStoreConstants.ISBN + ISBN + BookStoreConstants.NOT_AVAILABLE);
if (BookStoreUtility.isInvalidRating(rating))
throw new BookStoreException(
BookStoreConstants.RATING + rating + BookStoreConstants.INVALID);
}
try {
bsLock.writeLock().lock(); // upgrade to write lock
/* Inputs are valid so, ready to rate the books change */
for (BookRating br : bookRating) {
book = bookMap.get(br.getISBN());
book.addRating(br.getRating());
}
} finally {
bsLock.writeLock().unlock(); // downgrade to update lock
}
} finally {
bsLock.updateLock().unlock();
}
return;
}
public void addBooks(Set<StockBook> bookSet) throws BookStoreException {
if (bookSet == null) {
throw new BookStoreException(BookStoreConstants.NULL_INPUT);
}
try {
// Check if all are there
bsLock.updateLock().lock();
for (StockBook book : bookSet) {
int ISBN = book.getISBN();
String bookTitle = book.getTitle();
String bookAuthor = book.getAuthor();
int noCopies = book.getNumCopies();
float bookPrice = book.getPrice();
if (BookStoreUtility.isInvalidISBN(ISBN)
|| BookStoreUtility.isEmpty(bookTitle)
|| BookStoreUtility.isEmpty(bookAuthor)
|| BookStoreUtility.isInvalidNoCopies(noCopies)
|| bookPrice < 0.0) {
throw new BookStoreException(
BookStoreConstants.BOOK + book.toString() + BookStoreConstants.INVALID);
} else if (bookMap.containsKey(ISBN)) {
throw new BookStoreException(
BookStoreConstants.ISBN + ISBN + BookStoreConstants.DUPLICATED);
}
}
bsLock.writeLock().lock();
for (StockBook book : bookSet) {
int ISBN = book.getISBN();
bookMap.put(ISBN, new BookStoreBook(book));
}
} finally {
bsLock.writeLock().unlock();
bsLock.updateLock().unlock();
}
return;
}