Lambda syntax in MongoDb driver to update an array element in a document

Question

I'm using MongoDb C# driver in my application and I need to update a sub-item in my document. I found the way doing something like this:

var query = Query<User>.ElemMatch(_=>_.Item, qb=>qb.EQ(x => x.Valid,false));

var update = Update.Set("Item.$.Valid", true); <-- can I use lambda here?

var result = collection.Update(query, update);

Now I want to ask you: Can I use lambda syntax to remove the fixed string "Item.$.Valid" enabling compile-time check (like Update<Item>.Set(x=>x...)?

Inside driver source code I've found nothing about this!

It's an interesting question :-)

daniele3004
– daniele3004

2014-10-30 12:21:33 +00:00
Commented Oct 30, 2014 at 12:21 — daniele3004
– daniele3004, Commented Oct 30, 2014 at 12:21
@daniele3004 you can upvote to indicate that

thumbmunkeys
– thumbmunkeys

2014-10-30 12:41:51 +00:00
Commented Oct 30, 2014 at 12:41 — thumbmunkeys
– thumbmunkeys, Commented Oct 30, 2014 at 12:41

Craig Wilson · Accepted Answer · 2014-10-30 17:17:29Z

2

Not right now. This is the JIRA ticket for it. https://jira.mongodb.org/browse/CSHARP-588

Coming up with a good syntax for this without doubling all the helper methods is difficult. We are completely open to suggestions, so please comment on the JIRA ticket if you have some.

answered Oct 30, 2014 at 17:17

Craig Wilson

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