How can I determine the EntitySet that a bound Operation (function or action) belongs to given a Microsoft.Odata.Edm.IEdmModel?

Question

User-671945816 posted

I have an Microsoft.Odata.Edm.IEdmModel and I am trying to determine what EntitySet each operation belongs to. But it doesn't seem possible. I tried the following:

        var edm = WebApiConfig.GetOdataEdmModel();
        var operation = edm.SchemaElements.First(x => (x as IEdmOperation)?.Name == "GetRecentCustomers") as IEdmOperation;
        var boundTo = operation.FindParameter("bindingParameter");
        var matchingEntitySets = edm.EntityContainer.EntitySets()
                                    .Where(x => x.Type.FullTypeName() == boundTo.Type.Definition.FullTypeName())
                                    .ToList();

The problem is that matchingEntitySets can have more than one result. The reason is that the OData model is built this way:

e.g.,

        var builder = new ODataConventionModelBuilder();
        builder.EntitySet<BusinessEntity>("Customers");
        builder.EntitySet<BusinessEntity>("Vendors");
        builder.EntityType<BusinessEntity>()
               .Collection
               .Function(nameof(CustomersController.GetRecentCustomers))
               .ReturnsCollectionFromEntitySet<BusinessEntity>("Customers");

Is the answer simply that OData doesn't support more than one entity set with the same model type? If that is the case why doesn't the builder protect against this?

Answer 1

User665608656 posted

Hi sheamus,

According to your descriotion, I hope the following links can help you solve your issue:

https://www.odata.org/

Actions and Functions in OData v4 Using ASP.NET Web API 2.2

oData v4 - ordering outer entity on property in related one-to-many entities

Best Regards,

YongQing.

Answer 2

User-671945816 posted

Hello,

Thanks for the reply. However, those links talk about adding actions and entities.

I am trying to interrogate the EDM model so I can generate typescript bindings. However, I have an issue where via the EDM model I am unable to determine which endpoint an action belongs to, because I have two EntitySets with the same underlying Entity. Get I get the data about the action it tells me the underlying type, but not the entity set which means I don't know which endpoint to call that action off of.