/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

2 votes144 views1 answer
Android list[index]
Java
1 vote135 views1 answer
Lambda function java
Java
0 vote152 views2 answers
Https://github.com/nuxt/nuxt.js/issues/8315#:~:text=%3Chtml%20lang%3D%22ru%22%20data%2Dn%2Dhead%3D%22%257B%2522lang%2522%3A%257B%2522ssr%2522%3A%2522ru%2522%257D%257D%22%3E
Java
1 vote140 views1 answer
Android navigation bar color change
Java
0 vote204 views1 answer
How to acces every char of a String in java
Java
0 vote138 views1 answer
Jfxsa-run-no-another-jvm java fxml error
Java
0 vote141 views1 answer
"https://unpkg.com/[email protected]/dist/ThaanaKeyboard.min.js
Java
9 votes150 views4 answers
Java clear console
Java
0 vote171 views2 answers
Extract substring in string java
Java
0 vote174 views1 answer
Javafx arabic letters
Java