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Connect to DigitalOcean Data in JRuby

Create a simple JRuby app with access to live DigitalOcean data.

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

Configure a JDBC Connection to DigitalOcean 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 DigitalOcean\lib).

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

DigitalOcean uses OAuth 2.0 authentication. To authenticate using OAuth, you can use the embedded credentials or register an app with DigitalOcean.

See the Getting Started guide in the CData driver documentation for more information.

Built-in Connection String Designer

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

java -jar cdata.jdbc.digitalocean.jar

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

Below is a typical JDBC connection string for DigitalOcean:

jdbc:digitalocean:InitiateOAuth=GETANDREFRESH

Create a JRuby App with Connectivity to DigitalOcean Data

Create a new Ruby file (for example: DigitalOceanSelect.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 DigitalOcean 2018/lib/cdata.jdbc.digitalocean.jar' url = "jdbc:digitalocean:InitiateOAuth=GETANDREFRESH" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT Id, Name FROM Droplets") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S DigitalOceanSelect.rb

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