/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

0 vote113 views1 answer
Add a value to a list java in java hashmap
Java
0 vote109 views1 answer
Get time until start of next hour in java
Java
0 vote135 views1 answer
TestException = com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field
Java
1 vote110 views1 answer
Javafx add event handler to button
Java
0 vote131 views1 answer
Android @Parcelize not resolving
Java
1 vote124 views1 answer
Convert biginteger to string java
Java
31 votes103 views6 answers
Java for loop example
Java
2 votes110 views1 answer
Com.android.builder.dexing.DexArchiveMergerException:
Java
-1 vote115 views1 answer
MapToString in java
Java
0 vote109 views1 answer
How to change text of textview in slide menu bar header android
Java