WCF Data Services consuming data from EF based repository

Posted by John Kattenhorn on Stack Overflow See other posts from Stack Overflow or by John Kattenhorn
Published on 2010-05-11T11:31:32Z Indexed on 2010/05/11 11:34 UTC
Read the original article Hit count: 750

Filed under:

OData

|

wcf

|

repository

|

c#

|

entity-framework

We have an existing repository which is based on EF4 / POCO and is working well. We want to add a service layer using WCF Data Services and looking for some best practice advice.

So far we have developed a class which has a IQueryable property and the getter triggers the repository 'get all users' method. The problem so far have been two-fold:

1) It required us to decorate the ID field of the poco object to tell data service what field was the id. This now means that our POCO object is not 'pure'.

2) It cannot figure out the relationships between the objects (which is obvious i guess).

I've now stopped this approach and i'm thinking that maybe we should expose the OBjectContext from the repository and use more 'automatic' functionality of EF.

Has anybody got any advice or examples of using the repository pattern with WCF Data Services ?

© Stack Overflow or respective owner

Related posts about OData

OData.org updated, gives clues about future SQL Azure enhancements

as seen on SQL Blog - Search for 'SQL Blog'
The OData website at http://www.odata.org/home has been updated today to provide a much more engaging page than the previous sterile attempt. Moreover its now chockful of information about the progress of OData including a blog, a list of products that produce OData feeds plus some live… >>> More
Pre-filtering and shaping OData feeds using WCF Data Services and the Entity Framework - Part 1

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
The Open Data Protocol, referred to as OData, is a new data-sharing standard that breaks down silos and fosters an interoperative ecosystem for data consumers (clients) and producers (services) that is far more powerful than currently possible. It enables more applications to make sense of a broader… >>> More
Tracking My Internet Provider Speeds

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Of late, our broadband internet has been feeling sluggish. A call to the company took way more hold-time than I wanted to spend, and it only fixed the problem for a short while. Thus a perfect opportunity to play with some new tech to solve a problem, in this case, documenting a systemic issue from… >>> More
Pre-filtering and shaping OData feeds using WCF Data Services and the Entity Framework - Part 2

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
In the previous post, you saw how to create an OData feed and pre-filter the data. In this post, we will see how to shape the data. A sample project is attached at the bottom of this post. Pre-filtering and shaping OData feeds using WCF Data Services and the Entity Framework - Part 1 … >>> More
Data Services Update for .NET 3.5 SP1…

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
I have started writing OData style services for a couple of clients, and I noticed that a lot of the classes in the API were missing… That’s because I needed to download the update, just having .net 3.5 sp1 wasn’t enough.. http://blogs.msdn.com/astoriateam/archive/2010/01/27/data-services-update-for-net-3-5-sp1-available-for-download… >>> More

Related posts about wcf

Calling a WCF service from another WCF service

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi ! I have a WCF service hosted on a windows service on my Server1. It also has IIS on this machine. I call the service from a web app and it works fine. But within this service, I have to call another WCF sevice (also hosted on a windows service) located on Server2. The security credentials are… >>> More
wcf + Byte array through wcf service using MTOM

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, How to pass Byte array through wcf service using MTOM..please give me any sample >>> More
WCF 4.0 new enhancements over WCF 3.5

as seen on Stack Overflow - Search for 'Stack Overflow'
What are the new enhancements in WCF 4.0 and how easy would it be to upgrade existing WCF services to 4.0? >>> More
Reuse classes and objects for both WCF and non-WCF

as seen on Stack Overflow - Search for 'Stack Overflow'
I have several classes such as Order, Customer, etc. These classes serve for holding data and nothing more. I want to be able to reuse these classes in other projects in the future, but for some reason I don't quite understand, WCF forces me to decorate the data members with the [DataMember] attribute… >>> More
Summarizing client side asynchronous invocations in WCF/WCF Silverlight

as seen on Code Project - Search for 'Code Project'
Summarizing client side asynchronous invocations in WCF/WCF Silverlight. Introducing ServiceClient class. >>> More