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Consume Certinia OData Feeds in PowerBuilder
This article demonstrates how to consume Certinia data as OData feeds from PowerBuilder using the API Server.
The CData API Server, when paired with the ADO.NET Provider for Certinia (or any of 200+ other ADO.NET Providers), produces secure feeds of Certinia data that you can consume in PowerBuilder DataWindows. The API Server supports the major Web services, including OData, Atom, JSON, HTML, CSV, TSV, and RSS. It also supports the major authentication schemes and SSL.
This article shows how to create a DataWindow that uses the CData API Server to execute reads and writes.
Set Up the API Server
Follow the steps below to begin producing secure Certinia 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 Certinia
After you deploy the API Server and the ADO.NET Provider for Certinia, provide authentication values and other connection properties needed to connect to Certinia by clicking Settings -> Connections and adding a new connection in the API Server administration console.
There are several authentication methods available for connecting to Certinia: login credentials, SSO, and OAuth.
Authenticating with a Login and Token
Set the User and Password to your login credentials. Additionally, set the SecurityToken. By default, the SecurityToken is required, but you can make it optional by allowing a range of trusted IP addresses.
To disable the security token:
- Log in to Certinia and enter "Network Access" in the Quick Find box in the setup section.
- Add your IP address to the list of trusted IP addresses.
To obtain the security token:
- Open the personal information page on certinia.com.
- Click the link to reset your security token. The token will be emailed to you.
- Specify the security token in the SecurityToken connection property or append it to the Password.
Authenticating with OAuth
If you do not have access to the user name and password or do not want to require them, use the OAuth user consent flow. See the OAuth section in the Help for an authentication guide.
Connecting to Certinia Sandbox Accounts
Set UseSandbox to true (false by default) to use a Certinia sandbox account. Ensure that you specify a sandbox user name in User.
You can then choose the Certinia entities you want to allow the API Server access to by clicking Settings -> Resources.
Additionally, click Settings -> Server and change the following settings for compatibility with PowerBuilder:
- Default Format: Select XML (Atom) in the menu.
- Default Version: Select 2.0 in the menu.
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.
Create a Profile for Certinia
Follow the steps below to use the Database Painter tool to create a database profile for the OData API of the API Server. In the Database Painter, you can graphically manipulate data as well as execute SQL queries.
- Click Tools -> Database Painter.
- Right-click the OData node and click New Profile.
- In the Database Profile Setup dialog, enter the following:
- Profile Name: Enter a user-friendly name for the profile.
- URI: Enter the URL to the OData endpoint of the API Server. This URL will resemble the one below:
http://MyServer:8032/api.rsc - Supply User Id and Password: Click this option to use HTTP Basic authentication. Note that the API Server also supports Windows authentication.
- User Id: Enter the name of an user in the API Server.
- Password: Enter the authtoken of an user in the API Server.
- To view and modify a table, right-click a table and then click Edit Data -> Grid.
Using Certinia Data with PowerBuilder Controls
You can use standard PowerBuilder objects to connect to OData feeds and execute queries. The following example shows how to retrieve Certinia data into a DataWindow.
You can add the following code to the open method:
SQLCA.DBMS = "ODT"
SQLCA.DBParm = "ConnectString='URI=http://MyServer:8032/api.rsc;UID=MyAPIUser;PWD=MyAuthtoken'";
CONNECT USING SQLCA;
dw_account.SetTransObject(SQLCA);
dw_account.Retrieve();
