Bulk Update with Spring Data MongoDB Reactive

Question

How can I perform bulk perations using ReactiveMongoTemplate?

Basically I want to initialize bulk using db.<collection_name>.initializeUnorderedBulkOp() and execute it using <bulk>.execute().

I know there is a way to do this using simple MongoTemplate as specified here but I can't find any way how to do this in reactive.

Answer 1

I finally managed to perform bulk writing using MongoCollection.bulkWrite method.

reactiveMongoTemplate.getCollection("assets_refs").flatMap(mongoCollection -> {
        var operations = entities.stream().map(entity -> {
            Document doc = new Document();
            reactiveMongoTemplate.getConverter().write(entity, doc);
            var filter = new Document("externalId", entity.getExternalId());
            return new UpdateOneModel<Document>(filter, new Document("$set", doc), new UpdateOptions().upsert(true));
        }).toList();
        return Mono.from(mongoCollection.bulkWrite(operations));
    })