Returning both old and new entities from Spring/MongoDB findAndModify

Is there some way to return both old and new entities from findAndModify?

No, there's no way to return both old and new value with findAndModify.

No, there's no way to return both old and new value with findAndModify.

But if you want to compare entitiy state before and after updating do the below steps

1. Just before updating retrieve the data using primary key and store in oldData variable
2. in your findAndModify query change returnNew to true to save it under newData

Below sample sudocode will return you both values

    public Pair<Data> saveItems(String id, List<Item> items) {    final Query findById = ...;    final Update update = new Update();    // This is what we actually update    update.set(ENTITY_FIELD_ITEMS, newItems);    update.inc(ENTITY_FIELD_VERSION, 1);    // Try updating and return the old data     final Data oldData = findById(); //query to retrieve existing data    final Data newData = operations.findAndModify(findById, update,        FindAndModifyOptions.options().upsert(true).returnNew(true), Data.class);      return new Pair<Data>(oldData, newData);    }