Updating a property

[JanivZ]

Hi all,

Im new to raven so i have a beginer question.

I have a set of document Id's on the server side. After I've finished working on them I'd like to send an 'update' command to update a state property on all the documents in my document list.

What would be the right way to do this ? Batch multiple Patch commands  ? ( can i have an example ? ) or something else ? 

Thank you.

[Oren Eini (Ayende Rahien)]

The easiest is to load the entity and modify it. this is simplest, easiest to understand and more than likely to be the most performant option.

You can also use: 

http://ravendb.net/docs/client-api/partial-document-updates 

[JanivZ]

Hi Oren and thanks for the quick reply.

Just another small question:

Returning the whole list of documents to the server requires the re-serialization of all of them ( which in turn causes the problems you resolved for me in this question - http://stackoverflow.com/questions/10030704/raven-db-documentstore-throws-out-of-memory-exception), and then 

sending them all over the wire. This seems like a lot of work when i already know the document Id's i want to update. 

I don't mind a 'more complicated - but more efficient' solution - as this is going to be high scale app that needs to be as efficient as possible. Perhaps there's another direction i could try ? 

Thanks again !

On Sunday, 8 April 2012 15:13:09 UTC+3, Oren Eini wrote:

The easiest is to load the entity and modify it. this is simplest, easiest to understand and more than likely to be the most performant option.

You can also use: 

http://ravendb.net/docs/client-api/partial-document-updates 

[Oren Eini (Ayende Rahien)]

You need to make sure that you send all of the patch command in the same Batch, not as inidividual Patch calls.

[JanivZ]

Thank you very much,

I'll give it a go. 

[JanivZ]

Something like this i guess ? 

        internal void Patch()
        {
            List<string> docIds = new List<string>() { "596548a7-61ef-4465-95bc-b651079f4888", "cbbca8d5-be45-4e0d-91cf-f4129e13e65e" };
            using (var session = _documentStore.OpenSession())
            {
                session.Advanced.DatabaseCommands.Batch(GenerateCommands(docIds));
            }
        }

        private List<ICommandData> GenerateCommands(List<string> docIds )
        {
            List<ICommandData> retList = new List<ICommandData>();
 
            foreach (var item in docIds)
            {
                retList.Add(new PatchCommandData()
                {
                    Key = item,
                    Patches = new[] { new  Raven.Abstractions.Data.PatchRequest () {
                    Name = "Processed",
                    Type = Raven.Abstractions.Data.PatchCommandType.Set,
                    Value = new RavenJValue(true)
                }}});
            }
            
            return retList;
        }

[Oren Eini (Ayende Rahien)]

Yes

[JanivZ]

thx !

On Sunday, 8 April 2012 17:21:29 UTC+3, Oren Eini wrote:

Yes