Use the API Server and JSON ADO.NET Provider to Access JSON Services in Microsoft PowerPivot

This article will explain how to use the API Server and the ADO.NET Provider for JSON (or any of 200+ other ADO.NET Providers) to provide JSON services as OData services and then consume the data in Microsoft Excel's PowerPivot business intelligence tool. Follow the steps below to retrieve and edit JSON services in Power Pivot.

Set Up the API Server

Follow the steps below to begin producing secure JSON OData services:

Deploy

The API Server runs on your own server. On Windows, you can deploy using the stand-alone server or IIS. On a Java servlet container, drop in the API Server WAR file. See the help documentation for more information and how-tos.

The API Server is also easy to deploy on Microsoft Azure, Amazon EC2, and Heroku.

Connect to JSON

After you deploy the API Server and the ADO.NET Provider for JSON, provide authentication values and other connection properties needed to connect to JSON by clicking Settings -> Connections and adding a new connection in the API Server administration console.

See the Getting Started chapter in the data provider documentation to authenticate to your data source: The data provider models JSON APIs as bidirectional database tables and JSON files as read-only views (local files, files stored on popular cloud services, and FTP servers). The major authentication schemes are supported, including HTTP Basic, Digest, NTLM, OAuth, and FTP. See the Getting Started chapter in the data provider documentation for authentication guides.

After setting the URI and providing any authentication values, set DataModel to more closely match the data representation to the structure of your data.

The DataModel property is the controlling property over how your data is represented into tables and toggles the following basic configurations.

• Document (default): Model a top-level, document view of your JSON data. The data provider returns nested elements as aggregates of data.
• FlattenedDocuments: Implicitly join nested documents and their parents into a single table.
• Relational: Return individual, related tables from hierarchical data. The tables contain a primary key and a foreign key that links to the parent document.

See the Modeling JSON Data chapter for more information on configuring the relational representation. You will also find the sample data used in the following examples. The data includes entries for people, the cars they own, and various maintenance services performed on those cars.

You can then choose the JSON entities you want to allow the API Server access to by clicking Settings -> Resources.

Additionally, click Settings -> Server and set the Default Format to XML (Atom) for compatibility with Excel.

Authorize API Server Users

After determining the OData services you want to produce, authorize users by clicking Settings -> Users. The API Server uses authtoken-based authentication and supports the major authentication schemes. Access can also be restricted based on IP address; by default, only connections to the local machine are allowed. You can authenticate as well as encrypt connections with SSL.

Import JSON Tables in Power Pivot

Follow the steps below to import tables that can be refreshed on demand:

1. In Excel, click the PowerPivot Window icon in the PowerPivot tab to open PowerPivot.
2. Click Home -> Get External Data -> From Data Service -> From OData Data Feed.

3. Add authentication parameters. Click Advanced and set the Integrated Security option to Basic. You will need to enter the User Id and Password of a user who has access to the CData API Server. Set the password to the user's authtoken.

4. In the Base URL box, enter the OData URL of the CData API Server. For example, http://localhost:8032/api.rsc.

   

5. Select which tables you want to import and click Finish.

   

You can now work with JSON services in Power Pivot.