Specify some types in the same container but not others, is this possible?

Describe the bug I’ve recently finished running through the Pluralsight course on data modelling in cosmos db and I thought it might be a fun exercise to see if I could implement the final container/type construction using the repository tooling. But I am unsure if either I’m not doing it right or it’s not possible.

To Reproduce I started off simple and worked through the meta data into the same container. For those which don’t have access to the course it’s essentially

Tag:

{
 "id" :"",
 "name" : "",
 "type": "tag"
}

Category:

{
 "id" :"",
 "name" : "",
 "type": "category"
}

Container: “meta” Partition Key: “/type”

(not pasted an image from the course slide as unsure about copyright etc).

Reproduction code:

using Microsoft.Azure.CosmosRepository;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

const string databaseName = "datamodelling";

var host = Host.CreateDefaultBuilder(args)
    .ConfigureServices(services =>
    {
        services.AddCosmosRepository(options =>
        {
            // do not do this; demo only to make obvious
            options.CosmosConnectionString = "AccountEndpoint=https://localhost:8081/;AccountKey=C2y6yDjf5/R+ob0N8A7Cgv30VRDJIWEHLM+4QDU5DE2nQ9nDuVTqobD4b8mGGyPMbIZnqyMsEcaGQy67XIw/Jw==";

            options.DatabaseId = databaseName;
            options.ContainerPerItemType = false;

            options.ContainerBuilder.Configure<Category>(builder =>
            {
                builder.WithContainer("meta")
                    .WithPartitionKey("/type");
            });

            options.ContainerBuilder.Configure<Tag>(builder =>
            {
                builder.WithContainer("meta")
                    .WithPartitionKey("/type");
            });

        });
    })
    .Build();

var tagsRepository = host.Services.GetService<IRepository<Tag>>();
await tagsRepository.CreateAsync(new Tag() { Name = "production" });
await tagsRepository.CreateAsync(new Tag() { Name = "staging" });
await tagsRepository.CreateAsync(new Tag() { Name = "development" });

var categoryRepository = host.Services.GetService<IRepository<Category>>();
await categoryRepository.CreateAsync(new Category() { Name = "Laptops" });
await categoryRepository.CreateAsync(new Category() { Name = "Desktops" });
await categoryRepository.CreateAsync(new Category() { Name = "Workstations" });

var tags = await tagsRepository.GetAsync(t => true);

//[Container("meta")]
//[PartitionKeyPath("/type")]
public class Tag : Item
{
    public string Name { get; set; }

    protected override string GetPartitionKeyValue()
    {
        return base.Type;
    }
}

//[Container("meta")]
//[PartitionKeyPath("/type")]
public class Category : Item
{
    public string Name { get; set; }

    protected override string GetPartitionKeyValue()
    {
        return base.Type;
    }
}

As you can see from the above I have tried the attributes to define the container and partition keys. I have also tried the builder options to define container and partition key values. And also various combinations of them both, but no luck.

Expected behavior Both types go into the container named “meta”

Actual behavior Both types go into the container named “container” which is the default container name in the package.

Environment summary SDK Version: latest (2.11.0) .NET Version: 6.0.0 OS Version (e.g. Windows, Linux, MacOSX): Windows 10

[mumby0168]

Hi, since you are using the container builder, you need to set the container per item type property to true, this gives you full control over where each type is stored. Hope this helps, we need to add this to the docs really.

[mumby0168]

Ah OK, will give it a go. The whole item per container set as true but trying to put more than one item in a single container confused me. Will let you know. Thanks 😊

Yes, I can see where you’re coming from, with that set to false it will put all item’s in the same container, using just the /id as the partition key, turning this to true is like saying, “I am taking control now” if that makes sense. You tell each IItem which container and what partition key to use.