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

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  sheamus08

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  How can I determine the EntitySet that a bound Operation (function or action) belongs to given a...

  Jan 29, 2020 06:58 PM|sheamus08|LINK

  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?

• • Reply
  Yongqing Yu

  Contributor

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  1043 Posts

  Re: How can I determine the EntitySet that a bound Operation (function or action) belongs to give...

  Jan 30, 2020 06:54 AM|Yongqing Yu|LINK

  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.

  MSDN Community Support
  
  Please remember to click "Mark as Answer" the responses that resolved your issue.
  
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• • Reply
  sheamus08

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  Re: How can I determine the EntitySet that a bound Operation (function or action) belongs to give...

  Jan 31, 2020 06:46 PM|sheamus08|LINK

  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.