public List<BookPresentationInformation> updateBookPresentationPriceForBooksWithMultipleFormats(
int numberOfFormats, double amount) {
EntityManager entityManager = Utilities.getEntityManagerFactory().createEntityManager();
EntityTransaction entityTransaction = null;
try {
entityTransaction = entityManager.getTransaction();
entityTransaction.begin();
CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<Book> criteriaQueryBook = criteriaBuilder.createQuery(Book.class);
Root<Book> rootBook = criteriaQueryBook.from(Book.class);
criteriaQueryBook.select(rootBook);
CriteriaQuery<BookPresentation> criteriaQueryBookPresentation =
criteriaBuilder.createQuery(BookPresentation.class);
Subquery<Long> subqueryBookPresentation = criteriaQueryBookPresentation.subquery(Long.class);
Root<BookPresentation> rootBookPresentation =
subqueryBookPresentation.from(BookPresentation.class);
subqueryBookPresentation.select(
criteriaBuilder.count(rootBookPresentation.get(BookPresentation_.id)));
subqueryBookPresentation.where(
criteriaBuilder.equal(
rootBookPresentation.get(BookPresentation_.book), rootBook.get(Book_.id)));
criteriaQueryBook.where(criteriaBuilder.gt(subqueryBookPresentation, numberOfFormats));
TypedQuery<Book> typedQueryBook = entityManager.createQuery(criteriaQueryBook);
List<Book> booksList = typedQueryBook.getResultList();
entityManager
.createNativeQuery(
"CREATE TABLE IF NOT EXISTS bookstore.book_tmp ( "
+ "book_id INT(10) UNSIGNED NOT NULL "
+ ");",
Book.class)
.executeUpdate();
for (Book book : booksList) {
entityManager
.createNativeQuery(
"INSERT INTO bookstore.book_tmp VALUES (" + book.getId() + ");", Book.class)
.executeUpdate();
}
entityManager
.createNativeQuery(
"UPDATE bookstore.book_presentation SET price = price * :amount WHERE book_id IN (SELECT book_id FROM bookstore.book_tmp)",
Book.class)
.setParameter("amount", amount)
.executeUpdate();
CriteriaQuery<BookPresentationInformation> criteriaQueryBookPresentationInformation =
criteriaBuilder.createQuery(BookPresentationInformation.class);
Root<BookPresentation> root =
criteriaQueryBookPresentationInformation.from(BookPresentation.class);
Join<BookPresentation, Book> joinBookPresentation = root.join(BookPresentation_.book);
Join<BookPresentation, Format> joinFormat = root.join(BookPresentation_.format);
criteriaQueryBookPresentationInformation.multiselect(
root.get(BookPresentation_.id),
joinBookPresentation.get(Book_.id),
joinFormat.get(Format_.id),
root.get(BookPresentation_.price));
criteriaQueryBookPresentationInformation.where(
root.get(BookPresentation_.book).in(booksList));
TypedQuery<BookPresentationInformation> typedQueryBookPresentationInformation =
entityManager.createQuery(criteriaQueryBookPresentationInformation);
List<BookPresentationInformation> bookPresentationInformationList =
typedQueryBookPresentationInformation.getResultList();
entityManager.createNativeQuery("DROP TABLE bookstore.book_tmp;", Book.class).executeUpdate();
entityTransaction.commit();
return bookPresentationInformationList;
} catch (Exception exception) {
System.out.println("An exception has occurred: " + exception.getMessage());
if (Constants.DEBUG) {
exception.printStackTrace();
}
entityTransaction.rollback();
} finally {
entityManager.close();
}
return null;
}
public List<SupplyOrderInformation> makeSupplyOrderBasedOnStockpile(int stockpile) {
List<SupplyOrderInformation> result = new ArrayList<>();
SupplyOrderHeaderManager supplyOrderHeaderManager = new SupplyOrderHeaderManager();
SupplyOrderLineManager supplyOrderLineManager = new SupplyOrderLineManager();
Date currentDate = new Date(System.currentTimeMillis());
EntityManager entityManager = Utilities.getEntityManagerFactory().createEntityManager();
CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<BookPresentation> criteriaQueryBookPresentation =
criteriaBuilder.createQuery(BookPresentation.class);
Root<BookPresentation> rootBookPresentation =
criteriaQueryBookPresentation.from(BookPresentation.class);
Join<Collection, PublishingHouse> joinCollectionPublishingHouse =
rootBookPresentation
.join(BookPresentation_.book)
.join(Book_.collection)
.join(Collection_.publishingHouse);
criteriaQueryBookPresentation.select(rootBookPresentation);
criteriaQueryBookPresentation.where(
criteriaBuilder.lt(rootBookPresentation.get(BookPresentation_.stockpile), stockpile));
List<Order> orderList = new ArrayList<>();
orderList.add(criteriaBuilder.asc(joinCollectionPublishingHouse.get(PublishingHouse_.id)));
orderList.add(criteriaBuilder.asc(rootBookPresentation.get(BookPresentation_.id)));
criteriaQueryBookPresentation.orderBy(orderList);
TypedQuery<BookPresentation> typedQueryBookPresentation =
entityManager.createQuery(criteriaQueryBookPresentation);
List<BookPresentation> bookPresentationList = typedQueryBookPresentation.getResultList();
PublishingHouse currentPublishingHouse = null;
SupplyOrderHeader currentSupplyOrderHeader = null;
for (BookPresentation bookPresentation : bookPresentationList) {
PublishingHouse publishingHouse =
bookPresentation.getBook().getCollection().getPublishingHouse();
if (currentPublishingHouse == null || !currentPublishingHouse.equals(publishingHouse)) {
SupplyOrderHeader supplyOrderHeader = new SupplyOrderHeader();
supplyOrderHeader.setIdentificationNumber(Utilities.generateIdentificationNumber(3, 6));
supplyOrderHeader.setIssueDate(currentDate);
supplyOrderHeader.setState(Constants.SENT_STATUS);
supplyOrderHeader.setPublishingHouse(publishingHouse);
supplyOrderHeaderManager.create(supplyOrderHeader);
currentPublishingHouse = publishingHouse;
currentSupplyOrderHeader = supplyOrderHeader;
}
SupplyOrderLine supplyOrderLine = new SupplyOrderLine();
supplyOrderLine.setBookPresentation(bookPresentation);
supplyOrderLine.setQuantity(stockpile - bookPresentation.getStockpile());
supplyOrderLine.setSupplyOrderHeader(currentSupplyOrderHeader);
supplyOrderLineManager.create(supplyOrderLine);
}
entityManager.close();
entityManager = Utilities.getEntityManagerFactory().createEntityManager();
criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<SupplyOrderLine> criteriaQuerySupplyOrderLine =
criteriaBuilder.createQuery(SupplyOrderLine.class);
Root<SupplyOrderLine> rootSupplyOrderLine =
criteriaQuerySupplyOrderLine.from(SupplyOrderLine.class);
Join<SupplyOrderLine, SupplyOrderHeader> joinSupplyOrder =
rootSupplyOrderLine.join(SupplyOrderLine_.supplyOrderHeader);
criteriaQuerySupplyOrderLine.select(rootSupplyOrderLine);
criteriaQuerySupplyOrderLine.where(
criteriaBuilder.equal(
joinSupplyOrder.get(SupplyOrderHeader_.issueDate), criteriaBuilder.currentDate()));
criteriaQuerySupplyOrderLine.orderBy(
criteriaBuilder.asc(joinSupplyOrder.get(SupplyOrderHeader_.id)),
criteriaBuilder.asc(rootSupplyOrderLine.get(SupplyOrderLine_.id)));
TypedQuery<SupplyOrderLine> typedQuerySupplyOrderLine =
entityManager.createQuery(criteriaQuerySupplyOrderLine);
List<SupplyOrderLine> supplyOrderLines = typedQuerySupplyOrderLine.getResultList();
for (SupplyOrderLine supplyOrderLine : supplyOrderLines) {
SupplyOrderInformation supplyOrderInformation = new SupplyOrderInformation();
supplyOrderInformation.setPublishingHouseId(
supplyOrderLine.getSupplyOrderHeader().getPublishingHouse().getId());
supplyOrderInformation.setBookPresentationId(supplyOrderLine.getBookPresentation().getId());
supplyOrderInformation.setQuantity(supplyOrderLine.getQuantity());
result.add(supplyOrderInformation);
}
entityManager.close();
return result;
}