Connect to Salesforce Data Cloud Data in JRuby

JRuby is a high-performance, stable, fully threaded Java implementation of the Ruby programming language. The CData JDBC Driver for Salesforce Data Cloud makes it easy to integrate connectivity to live Salesforce Data Cloud data in JRuby. This article shows how to create a simple JRuby app that connects to Salesforce Data Cloud data, executes a query, and displays the results.

Configure a JDBC Connection to Salesforce Data Cloud Data

Before creating the app, note the installation location for the JAR file for the JDBC Driver (typically C:\Program Files\CData\CData JDBC Driver for Salesforce Data Cloud\lib).

JRuby natively supports JDBC, so you can easily connect to Salesforce Data Cloud and execute SQL queries. Initialize the JDBC connection with the getConnection function of the java.sql.DriverManager class.

Salesforce Data Cloud supports authentication via the OAuth standard.

OAuth

Set AuthScheme to OAuth.

Desktop Applications

CData provides an embedded OAuth application that simplifies authentication at the desktop.

You can also authenticate from the desktop via a custom OAuth application, which you configure and register at the Salesforce Data Cloud console. For further information, see Creating a Custom OAuth App in the Help documentation.

Before you connect, set these properties:

• InitiateOAuth: GETANDREFRESH. You can use InitiateOAuth to avoid repeating the OAuth exchange and manually setting the OAuthAccessToken.
• OAuthClientId (custom applications only): The Client ID assigned when you registered your custom OAuth application.
• OAuthClientSecret (custom applications only): The Client Secret assigned when you registered your custom OAuth application.

When you connect, the driver opens Salesforce Data Cloud's OAuth endpoint in your default browser. Log in and grant permissions to the application.

The driver then completes the OAuth process as follows:

• Extracts the access token from the callback URL.
• Obtains a new access token when the old one expires.
• Saves OAuth values in OAuthSettingsLocation so that they persist across connections.

For other OAuth methods, including Web Applications and Headless Machines, refer to the Help documentation.

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the Salesforce Data Cloud JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

java -jar cdata.jdbc.salesforcedatacloud.jar

Fill in the connection properties and copy the connection string to the clipboard.



Below is a typical JDBC connection string for Salesforce Data Cloud:

jdbc:salesforcedatacloud:InitiateOAuth=GETANDREFRESH

Create a JRuby App with Connectivity to Salesforce Data Cloud Data

Create a new Ruby file (for example: SalesforceDataCloudSelect.rb) and open it in a text editor. Copy the following code into your file:

require 'java' require 'rubygems' require 'C:/Program Files/CData/CData JDBC Driver for Salesforce Data Cloud 2018/lib/cdata.jdbc.salesforcedatacloud.jar' url = "jdbc:salesforcedatacloud:InitiateOAuth=GETANDREFRESH" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT [Account ID], [Account Name] FROM Account") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

With the file completed, you are ready to display your Salesforce Data Cloud data with JRuby. To do so, simply run your file from the command line:

jruby -S SalesforceDataCloudSelect.rb

Writing SQL-92 queries to Salesforce Data Cloud allows you to quickly and easily incorporate Salesforce Data Cloud data into your own JRuby applications. Download a free trial today!