OData

Create and consume RESTful APIs in a simple and standard way

Tutorial: Build gRPC & OData in ASP.NET Core

April 20, 2022 Apr 20, 2022 04/20/22
Sam Xu
Introduction gRPC (google Remote Procedure Call) is a high-performance remote procedure call framework that helps developers to build and consume remote services using the same way as calling local APIs. Different from gRPC, OData (Open Data Protocol) is an OASIS standard that defines a set of best practices for developers to build and ...

Customizing $filter for spatial data in ASP.NET Core OData 8

February 22, 2022 Feb 22, 2022 02/22/22
Kennedy Kangethe Munga
Background The OData URI parser parses the $filter query to a FilterClause. The FilterBinder translates an OData $filter parse tree represented by a FilterClause to an Expression. The Expression can be applied to an IQueryable and passed to an ORM (e.g Entity Framework Core) for processing. The FilterBinder contains the default ...
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$compute and $search in ASP.NET Core OData 8

January 11, 2022 Jan 11, 2022 01/11/22
Sam Xu
Introduction OData system query options, such as $filter, $orderby, are a set of query string parameters that control the amount and order of the data returned for the resource identified by the URL. In the latest version of ASP.NET Core OData, two new system query options as follows are enabled: $compute: allows clients to define ...

The Future of OData NxT (Neo)

January 4, 2022 Jan 4, 2022 01/4/22
Hassan Habib
Few months ago I announced a collaboration with the OData team to start building a new version of OData that can withstand the forever changing requirements in software design and architecture. I got together with Sam Xu and we decided to kick-off a spin-off version of OData.NET that I called OData NxT (Neo) OData Neo is an attempt to ...

Support for fetching nested paths in OData Web API

August 26, 2021 Aug 26, 2021 08/26/21
Clément Habinshuti
Background OData services use nested paths to access properties or entities related to a resource. For example, if you want to access orders of a given customer, you would use a request path like: http://localhost:8080/Customers/1/Orders Microsoft.AspNetCore.OData 7.x provides two main approaches for handling such requests: convention ...
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Build formatter extensions in ASP.NET Core OData 8 and hooks in ODataConnectedService

August 23, 2021 Aug 23, 2021 08/23/21
Sam Xu
Introduction In this post, I will create formatter extensions in an OData web service and request/response hooks in an OData client application to generate/consume ETag control information. ETag (aka entity tag), one of OData control information that may be applied to an entity or collection in response, can be used in a subsequent request to...

Tutorial: Creating a Service with ASP.NET Core OData 8.0 for .NET 5

July 30, 2021 Jul 30, 2021 07/30/21
Lisi Case
In this document, we will walk through the process of creating a local service using OData 8.0, which is optimized to support ASP.NET Core 5. To learn more about the changes, check out ASP.NET Core OData 8.0 Preview for .NET 5 (which also references ASP.NET Core OData now Available), written by my colleague, Sam. You'll notice that this post ...

Up & Running w/ OData in ASP.NET 6

July 10, 2021 Jul 10, 2021 07/10/21
Hassan Habib
In this article, I'm going to walk you through the simplest way you can follow to get up and running with OData 8.0 on ASP.NET 6.0 - including source code examples, video walk-throughs and a glimpse into the future of OData.

API versioning extension with ASP.NET Core OData 8

July 9, 2021 Jul 9, 2021 07/9/21
Sam Xu
Introduction API versioning can help evolving our APIs without changing or breaking the existing API services. URL segment, request header, and query string are three ways to achieve API versioning in ASP.NET Core application. ASP.NET Core OData 8, built upon ASP.NET Core, has the built-in API versioning functionality via route URL prefix ...