Monday, July 23, 2018

Patching RavenDB Metadata

On this post, let's understand how simple it is to patch the metadata of your documents using RavenDB Studio
On a previous post we talked about how to query metadata using RavenDB. Now, let's take a look at some ways to patch our metadata in RavenDB.

Patching Records with RavenDB

Patching records is RavenDB can be easy or less easy =). The easy way is doing it from RavenDB Studio. There you can do it by collection or index and write some JavaScript to it.

Patching using RavenDB Studio

Here's a simple example on how I can patch the Name and IsActivated fields in my Users collection:

Patching metadata using RavenDB Studio

But, you may be required to patch the metadata, how to do it? The answer is: Using the @metadata dictionary. Let's take a look.

Final Thoughts

In the example above, we're updating the document metadata property "Raven-Clr-Type" with "MyApp.Core.User, MyApp.Core":

this["@metadata"]["Raven-Clr-Type"] = "MyApp.Core.User, MyApp.Core";

You can obviously patch whatever you want in your metadata. In the previous example, I was patching the namespace of an entity that was refactored in my application.

Hope it helps!

See Also

A simple introduction to RavenDB
An in depth review of the RavenDB Cloud
Installing and Running RavenDB on Windows and Linux
Running RavenDB on Docker
Querying RavenDB Metadata

For more RavenDB posts on this blog, please click here.
Do you have any comment or suggestion about this post? Please contact me @BrunoHilden