Patch with client API?

[Brian Vallelunga]

Are there any examples of being able to patch a document using the
client API? I read in another thread that it's possible via the
IDocumentStore object, but can't find any documentation on it.

Thanks

[Ayende Rahien]

DocumentStore.DatabaseCommands.Batch(

  new PatchCommandData{

        Key = "users/15",

        Patches = new [] {

            Type = "Set",

            Name = "Email",

            Value = "Ayende"

        }

   }

);

[Brian Vallelunga]

Thanks. What about modifying a property of an indexed value in a
document?

Given a document of a class Foo:

public class Foo {
public string Id { get; set; } // Raven key
public Bar[] Children { get; set; }
}

with Bar being:

public class Bar {
public Guid BarId { get; set; } // Never stored as a separate
document
public bool Flag { get; set; }
}

Is it possible to patch a single instance of Bar contained in Foo's
Children array, given Foo's key and Bar's BarId?

[Ayende Rahien]

No, that isn't possible. You have to know the position of the value to modify it

[Brian Vallelunga]

Correct me if I'm wrong, but there's no concept of child documents/sub
documents, correct? Ideally in my situation, I'd be able to update one
of the child Bar instances directly, even though it's always contained
in a parent document.

The lack of being able to patch a subset of the document contained
within an array might make me redesign this portion of my application.
I might have to break out my Bar instances into individual documents,
even though most of the time I want to access them in distinct sets
under an umbrella of another document.

[Ayende Rahien]

Brian,

There are considered values, yes.

I wouldn't be too hasty to redesign, though.

There are two other options:

a) create a small plugin for Raven that'll do that for you

b) suggest a syntax for a more complex where for patch

[Daniel Steigerwald]

I would rename Name to Key, since in JSON Name and Index are both
Keys.
obj["Name"] or obj [1], same syntax.

Simple syntax to reach any prop in document:
monsterDocument.children[0].name

For more complex syntax where to patch, a to be convenient with JSON
world, I would chose http://goessner.net/articles/JsonPath/

[Ayende Rahien]

Oh, we can certainly do that right now, no need to do anything.

[Daniel Steigerwald]

LINQ to JSON?

On 3 srp, 11:05, Ayende Rahien <aye...@ayende.com> wrote:
> Oh, we can certainly do that right now, no need to do anything.
>
> On Tue, Aug 3, 2010 at 12:03 PM, Daniel Steigerwald
> <dan...@steigerwald.cz>wrote:
>
>
>
> > I would rename Name to Key, since in JSON Name and Index are both
> > Keys.
> > obj["Name"] or obj [1], same syntax.
>
> > Simple syntax to reach any prop in document:
> > monsterDocument.children[0].name
>
> > For more complex syntax where to patch, a to be convenient      with JSON

> > world, I would chosehttp://goessner.net/articles/JsonPath/

[Ayende Rahien]

No, using PATCH

http://www.ravendb.net/documentation/docs-http-api-patch

[Daniel Steigerwald]

I meant LINQ instead of JsonPath in PATCH
curl -X PATCH http://localhost:8080/docs/{document_id} -d
"var a = [{ type: 'patch', linq: 'from doc in docs from foo in
doc.foos ....' value: ''}];

[Ayende Rahien]

That would require compiling the code, which results in assembly loads, which results in an effective mem leak

[John]

So, like this, how can update multiple properties in a Document ?

[Matt Warren]

If you can move to the newer builds, you're better off using the new patching functionality, see http://ayende.com/blog/157185/awesome-ravendb-feature-of-the-day-evil-patching and http://blog.hibernatingrhinos.com/12705/new-option-in-the-ravendb-studiondash-patching

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