Provide OData Services of Amazon Marketplace Data from a WCF Application

The CData ADO.NET Provider for AmazonMarketplace enables you to use the Windows Communication Foundation (WCF) framework to rapidly develop service-oriented applications that provide Amazon Marketplace data to OData consumers. This article shows how to create an entity data model to provide the underlying connectivity to the Amazon Marketplace data, as well as how to create a WCF Data Service to expose the OData service. You can then consume the feed with any OData client, for example, Power Pivot or an application that uses the CData ADO.NET Provider for OData.

Create the OData Service

Follow the steps below to create a WCF service application that will provide connectivity to Amazon Marketplace data via OData.

1. Open Visual Studio and create a new project. Select the WCF Service Application template.
2. Delete the autogenerated IService.cs and Service1.svc.
3. Click Project -> Add New Item -> ADO.NET Entity Data Model.
4. In the Entity Data Model wizard that is displayed, select the 'EF Designer from Database' option.
5. In the resulting Choose Your Connection dialog, click New Connection.

6. In the Connection properties dialog, select the CData Amazon Marketplace Data Source and enter the necessary credentials. A typical connection string is below:

   Marketplace=Japan;Sellerid=mySellerId;Mwsauthtoken=amzn.mws.myAWSAuthToken;

   Amazon Marketplace Appstore 認証を使って接続が可能です。

   • Amazon Marketplace Appstore で、CData Amazon Marketplace Drivers のページを開きます。
   • 「今すぐ承認」をクリックしで、「次へ」と進みます。出品者ID などの必要情報を記入してCData Drivers にAmazon Marketplace データへのアクセス権を付与します。
   • 手続きが完了すると、「MWS 認証トークン」が取得できます。
   • CData Drivers の接続設定画面で「Marketplace」（任意のマーケットプレイスの国）、「Sellerid」（出品者ID）、「Mwsauthtoken」（先に取得したMWS 認証トークン）を入力して接続を行います。

   See the help documentation for guides to connecting in Visual Studio.

7. Select Amazon Marketplace tables and views that you want OData clients to access.
8. Click Project -> Add New Item -> WCF Data Service.

9. Specify the data source class and configure access to the new WCF Data Service. In the example below, the Access Rule for the entities is set to All. This means that any user will be able to read and modify data.

   using System; using System.Collections.Generic; using System.Data.Services; using System.Data.Services.Common; using System.Linq; using System.ServiceModel.Web; using System.Web; namespace AmazonMarketplaceService{ public class AmazonMarketplaceDataService : DataService { public static void InitializeService(DataServiceConfiguration config) { config.SetEntitySetAccessRule("*", EntitySetRights.All); config.DataServiceBehavior.MaxProtocolVersion = DataServiceProtocolVersion.V3; } } }
10. Run the project. Applications that support OData can now access the Salesforce data and reflect any changes. You can access the feed in your browser. The feed will resemble the following:

Consume the OData Service from Power Pivot

You can now use the service from any OData client; for example, Excel Power Pivot.

1. Open Excel and click on the Power Pivot Window button.
2. A new pop-up will appear. Select the option From Data Feeds.
3. In the resulting Table Import Wizard, enter the OData URL. For example, http://localhost:12449/AmazonMarketplaceDataService.svc/.
4. After connecting to the OData service, click the Next button at the bottom of the window.
5. A table listing of the available tables will appear in the next window of the wizard. Select which tables you want to import and click Finish.
6. Click Close to import the data in Power Pivot.