/Java/Spring delete objest from database that are not in your object list

Spring delete objest from database that are not in your object list

Optional<Order> orderFromDb = orderRepo.findById(id);

    if(CollectionUtils.isNotEmpty(orderRequest.getItems()))

    {
        // if there are less items in update request than database
        if (orderRequest.getItems().size() < orderFromDb.getItems().size()) {
            Set<Long> itemIds = orderRequest.getItems().stream().map(id -> id.getId()).collect(Collectors.toSet());
            for (ItemRequest itemRequest : orderRequest.getItems()) {
                Iterator<Item> item = orderFromDb.getItems().iterator();
                Item i;
                while (item.hasNext()) {
                    i = item.next();
                    if (!itemIds.contains(i.getId())) {
                        item.remove();
                        continue;
                    }
                    if (i.getId() == itemRequest.getId()) {
                        i.setName(itemRequest.getName());
                    }
                }
            }
        } else {
            // if there are more or same items in update request and database
            for (ItemRequest itemRequest : orderRequest.getItems()) {
                // assuming for newly added items id will not be there(db should generate)
                if (itemRequest.getId() == null) {
                    Item item = new Item();
                    item.setName(itemRequest.getName());
                    item.setOrder(orderFromDb);
                    orderFromDb.getItems().add(item);
                    continue;
                }
                for (Item item : orderFromDb.getItems()) {
                    if (item.getId() == itemRequest.getId()) {
                        item.setName(request.getName());
                    }
                }
            }
        }
    }

Source: stackoverflow.com

Similar codes

6 votes182 views2 answers
Tostring java
Java
0 vote241 views1 answer
Combinations in java
Java
1 vote247 views1 answer
Java class from string
Java
0 vote285 views1 answer
Component spring
Java Spring
1 vote226 views1 answer
Java jcheckbox get value
Java
0 vote243 views1 answer
How to not allow a user to enter a mark greater than 100 or below 0 in java
Java
0 vote247 views1 answer
How to make a ordering system in microsoft visual basic 2010 express console application
Java
0 vote233 views1 answer
Java program for wind-chill temperature
Java
44 votes227 views1 answer
Java jcombobox selected item changed
Java
1 vote262 views1 answer
Public static void main vs static public void main
Java