Document metadata in linq

[Idsa]

Document metadata help page contains the following example:

from doc in docs
where doc["@metadata"]["Raven-Entity-Name"] != null
select new { Tag = doc["@metadata"]["Raven-Entity-Name"] };

I didn't manage to make it compilable. What docs is? Is it documentSession.Query<Something>? It doesn't work this way as my entities do not contain indexer. 

[Oren Eini (Ayende Rahien)]

What do you mean, make it compilable?

Did you run it against the server? What error did you get?

[Alexander Sidorov]

To run it I need to know what docs is first. I tried to treat docs as documentSession.Query<SomeCollection> and obviously it doesn't build as my entities do not have indexer.

2012/7/29 Oren Eini (Ayende Rahien) <aye...@ayende.com>

[Oren Eini (Ayende Rahien)]

This is an index that is defined on the server side, or a string on the client side, it is not meant to be compiled client side.

[Alexander Sidorov]

Oh, sorry, didn't get. So there is no way to treat metadata by dynamic index?

[Oren Eini (Ayende Rahien)]

There is the MetadayaFor method