Build a Simple VCL Application for CircleCI Data

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData ODBC Driver for CircleCI, you gain access to live CircleCI data within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to retrieve CircleCI data. This article will walk through connecting to CircleCI and creating a simple VCL application with the Form Designer.

Create a Connection to CircleCI Data

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.

Using API Key Authentication

CircleCI uses personal API tokens to authenticate API requests. To generate a personal API token, log in to your CircleCI account, navigate to User Settings > Personal API Tokens, and click Create New Token. Copy the token value immediately as it is only shown once.

After setting the following connection properties, you are ready to connect:

• AuthScheme: Set this to APIKey.
• APIKey: Set this to your CircleCI personal API token.

Example connection string:

Profile=C:\profiles\CircleCI.apip;AuthScheme=APIKey;ProfileSettings='APIKey=your_personal_api_token';

You can then follow the steps below to use the Data Explorer to create a FireDAC connection to CircleCI data.

1. In a new VCL Forms application, expand the FireDAC node in the Data Explorer.
2. Right-click the ODBC Data Source node in the Data Explorer.
3. Click Add New Connection.
4. Enter a name for the connection.
5. In the FireDAC Connection Editor that appears, set the DataSource property to the name of the ODBC DSN for CircleCI.

Create VCL Applications with Connectivity to CircleCI Data

Follow the procedure below to start executing queries to CircleCI data from a simple VCL application that displays the results of a query in a grid.

1. Drop a TFDConnection component onto the form and set the following properties:

   • ConnectionDefName: Select the FireDAC connection to CircleCI data.
   • Connected: Select True from the menu and, in the dialog that appears, enter your credentials.

2. Drop a TFDQuery component onto the form and set the properties below:

   • Connection: Set this property to the TFDConnection component, if this component is not already specified.

   • SQL: Click the button in the SQL property and enter a query. For example:

     SELECT ,  FROM Artifacts WHERE ProjectSlug = 'github/MyOrg/my-repo'
     

   • Active: Set this property to true.

3. Drop a TDataSource component onto the form and set the following property:

   • DataSet: In the menu for this property, select the name of the TFDQuery component.

4. Drop a TDBGrid control onto the form and set the following property:

   • DataSource: Select the name of the TDataSource.
5. Drop a TFDGUIxWaitCursor onto the form — this is required to avoid a run-time error.

You now have an executable application that displays the results of the SQL Query set in the TFDQuery object.

Related Articles

Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.

• DataBind Controls to CircleCI Data in C++Builder
• DataBind Controls to CircleCI Data in Delphi
• Viewing CircleCI Data in RAD Studio Data Explorer