Spring data mongo bulk update

Question

Bulk updates are supported from spring-data-mongodb from 1.9.0.RELEASE.

BulkOperations ops = template.bulkOps(BulkMode.UNORDERED, Match.class);
for (User user : users) {
    Update update = new Update();
    ...
    ops.updateOne(query(where("id").is(user.getId())), update);
}
ops.execute();

mongoTemplate has the function called void save(Object objectToSave); I want to insert/update the whole record but not some particular fields. Is there any way or function that I can void the Update class?

Maybe something like this..?

BulkOperations ops = template.bulkOps(BulkMode.UNORDERED, Match.class);
for (User user : users) {
    ...
    ops.save(query(where("id").is(user.getId())), user);
}
ops.execute();

Answer 1

It seems that the upsert(Query query, Object object) it is not supported in the Spring Data MongoDB bulk operations.

However we can use Update.fromDBObject method to generate an Update object from a DBObject:

    BulkOperations bulkOps = mongoOperations.bulkOps(BulkOperations.BulkMode.ORDERED, entityInformation.getJavaType()); 

    // add "save" operation for each entity
    MongoConverter converter = mongoOperations.getConverter();
    ConversionService conversionService = converter.getConversionService();
    com.mongodb.DBObject dbObject;
    for (S entity : entities) {
        if (entityInformation.isNew(entity)) { // --- if NEW entity, then generate id and INSERT ---

            // generate NEW id
            ID id = conversionService.convert(new ObjectId(), entityInformation.getIdType());                
            entity.setId(id);
            // insert
            bulkOps.insert(entity);

        } else { // --- if EXISTING entity, then UPSERT ---

            // convert entity to mongo DBObject
            dbObject = new BasicDBObject();
            // NULL fields will NOT BE UPDATED - will be ignored when converting an entity to a {@link com.mongodb.DBObject} 
            // and thus they will not be added to the {@link Update} statement.
            converter.write(entity, dbObject);                
            // upsert
            bulkOps.upsert(new Query(Criteria.where(UNDERSCORE_ID).is(dbObject.get(UNDERSCORE_ID))),
                           Update.fromDBObject(new BasicDBObject("$set", dbObject)));
        }
    }
    // execute bulk operations
    bulkOps.execute();