Any plan on Upserting ?

Do you plan on adding upserting methods like in MongoDB ? Like in this example :

Foo foo = ...
var replaceOneResult = await collection.ReplaceOneAsync(
    doc => doc.Id == foo.Id, 
    foo, 
    new UpdateOptions {IsUpsert = true});

Much thanks for this useful library.

[mamidon]

Just adding my 👍 to this request; it’s a really useful feature when designing idempotent workloads.

My current ‘workaround’ (which is really more of pretty code than efficient): collection.InsertBulk(documentsToUpsert.Where(d => !collection.Update(d)).ToList());

[Dessix]

I’ve been working with a basic extension method to take the place of this behaviour until such a time when it is truly available. Here’s a simple implementation which relies on the type having an ID field that LiteDB can map correctly, or a mapping entry for the type in question that handles keying said objects. If the keys are equal, the item will be upserted. In short, it’s really an Update call followed by an Insert call on failure, but it works for me in cases where performance aren’t super critical. Implementation available here