Updating documents in RavenDB

Question

If you add, delete or rename a property on a persisted entity, what's the easiest way to update the documents in RavenDB?

Look at the documentation here, it is well described: http://ravendb.net/docs/client-api/partial-document-updates — Dofs, Jun 07 '12 at 10:24

score 21 · Answer 1 · edited Apr 23 '12 at 15:04

21

raven also has object tracking. so the following works:

var doc = _session.Load<MyDocType>(docId);
doc.PropertyToChange = "New Value";
_session.SaveChanges();

edited Apr 23 '12 at 15:04

jlew

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answered Jul 07 '11 at 11:49

Say, `MyDocType` contains less fields than there are in the document, will this remove all fields that are not in `MyDocType`? – Caramiriel Mar 11 '16 at 09:19
@Caramiriel Yes - because RavenDB is "self-healing", when you save the document back then only fields on the class will be saved back, and any other data from the document will be erased. This behaviour can be changed by setting `new DocumentStore().Conventions.PreserveDocumentPropertiesNotFoundOnModel`. – adrian Apr 12 '16 at 14:01

score 16 · Accepted Answer · edited Jul 03 '13 at 18:28

RavenDB supports PATCH commands, see the docs for more info for more info. This way you can update a document directly without having to pull it from the server, update it and then send it back.

Also you can run patches over multiple documents by using Set-based queries, see here for some more info. This lets you do the equivalent of

UPDATE Users
SET IsActive = false
WHERE LastLogin < '2010-05-10'

Updating documents in RavenDB

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