Connect to Discourse Data from PowerBuilder via ODBC

The CData ODBC Driver for Discourse can be used from any platform or development technology that supports ODBC, including PowerBuilder. This article shows how to connect to Discourse data and execute queries from the Database Painter and controls such as the DataWindow.

Connect to Discourse as an ODBC Data Source

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

The Discourse API uses API Key authentication.

Using API Key Authentication

Discourse requires API Key and Username for authentication. API Keys are generated in the Discourse Admin panel under the API section. You can create user-specific API keys or all-users API keys. Once you have obtained the API Key, set it along with the Domain and Username in the ProfileSettings connection property.

Example Connection string

Profile=C:\profiles\Discourse.apip;ProfileSettings='Domain=forum.example.com;APIKey=your_api_key;Username=your_username;'AuthScheme=APIKey;

Create a Profile for the ODBC Driver for Discourse

Follow the steps below to use the Database Painter tool to create a database profile based on an ODBC DSN (data source name) for Discourse. In the Database Painter, you can use wizards and the UI to work with Discourse data.

1. In PowerBuilder, click Tools -> Database Painter.
2. In the Objects window in the Database Painter, right-click the ODBC node and click New Profile.
3. On the Connection tab, enter a name for the profile and select the Discourse DSN in the Data Source menu.
4. To view and modify a table, right-click a table and then click Edit Data -> Grid.

Using Discourse Data with PowerBuilder Controls

You can use standard PowerBuilder objects to connect to ODBC data sources and execute queries. The following example shows how to retrieve Discourse data into a DataWindow. You can add the following code to the open method:

SQLCA.DBMS = "ODBC"
SQLCA.DBParm = "ConnectString='DSN=CData API Source'"
CONNECT USING SQLCA;
dw_backups.SetTransObject(SQLCA);
dw_backups.Retrieve();