Connect to Suadeo Data in JRuby

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

Configure a JDBC Connection to Suadeo 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 Suadeo\lib).

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

The driver uses the OAuth 2.0 Resource Owner Password Credentials (ROPC) grant to authenticate to Suadeo. Authentication occurs directly using your credentials; there is no browser-based authorization flow or refresh token.

Set the following connection properties:

• URL: The base URL of your Suadeo instance.
• User: Your Suadeo username.
• Password: Your Suadeo password.
• AuthenticationName: The name identifier for the authentication configuration in your Suadeo instance. Different authentication names can be configured for different environments or use cases.

When you connect, the driver sends your credentials to the Suadeo OAuth token endpoint, receives an access token, and uses it for all subsequent requests. A new access token is obtained automatically when needed during the session.

Built-in Connection String Designer

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

java -jar cdata.jdbc.suadeo.jar

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

Below is a typical JDBC connection string for Suadeo:

jdbc:suadeo:URL=https://mysuadeoinstance;User=username;Password=password;AuthenticationName=your_auth_name;

Create a JRuby App with Connectivity to Suadeo Data

Create a new Ruby file (for example: SuadeoSelect.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 Suadeo 2018/lib/cdata.jdbc.suadeo.jar'

url = "jdbc:suadeo:URL=https://mysuadeoinstance;User=username;Password=password;AuthenticationName=your_auth_name;"
conn = java.sql.DriverManager.getConnection(url)
stmt = conn.createStatement
rs = stmt.executeQuery("SELECT Id, Name FROM Customers")
while (rs.next) do
  puts rs.getString(1) + ' ' + rs.getString(2)
end

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

jruby -S SuadeoSelect.rb

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