bulk upserts return a private MultiBulkWriteResult

[Tom Howland]

bulk upserts return a private MultiBulkWriteResult. Consequently, we have flows that have return types that can't be declared.

I bet there is a reason it was designed like this. Does anyone know what that might have been?

[Cédric Chantepie]

There is misunderstanding.

MultiBulkWriteResult is not private, its constructor is (and only the driver can build it).

Anyway, as a type specific to DB, it's not intended to be leaked out in your own API.

[Tom Howland]

> MultiBulkWriteResult is not private, its constructor is (and only the driver can build it).

it.is definitely private. See 1.1.0-RC11 commands/MultiBulkWriteResultFactory.scala

Due to a design flaw, our bulk upsert commands return private instances, preventing the declaration of Flow return values.

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[Cédric Chantepie]

final class X private (...) { ... }

Doesn't mean that the class is private.

I suggest you have a look the documentation about Scala class syntax.

[Tom Howland]

It is a design flow

How should I declare my method?

object Pack is not a member of package reactivemongo.api.bson.collection
import reactivemongo.api.bson.collection.{BSONCollection, Pack}

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[Cédric Chantepie]

To do so, you need to work with dependent type.

That's rather a X/Y problem.

You should rather use `val ops = update(false); ops.many(..)` (BTW I doubt mixing JSON as update with BSON as value, and it generally making code overcomplex).