Connect to Onfleet Data in JRuby

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

Configure a JDBC Connection to Onfleet 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 Onfleet\lib).

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

Onfleet uses HTTP ApiKey Authentication. Your Onfleet API Key is used to authenticate requests. You can generate or view your API Key in the Onfleet dashboard under Settings > API.

Using ApiKey Authentication

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

• AuthScheme: Set this to APIKey.
• APIKey: Set this to your Onfleet API Key.

Example connection string:

Profile=C:\profiles\Onfleet.apip;AuthScheme=APIKey;ProfileSettings="ApiKey=your_api_key";

Built-in Connection String Designer

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

java -jar cdata.jdbc.api.jar

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

Below is a typical JDBC connection string for Onfleet:

jdbc:api:Profile=C:\profiles\Onfleet.apip;AuthScheme=APIKey;ProfileSettings="ApiKey=your_api_key";

Create a JRuby App with Connectivity to Onfleet Data

Create a new Ruby file (for example: APISelect.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 Onfleet 2018/lib/cdata.jdbc.api.jar'

url = "jdbc:api:Profile=C:\profiles\Onfleet.apip;AuthScheme=APIKey;ProfileSettings="ApiKey=your_api_key";"
conn = java.sql.DriverManager.getConnection(url)
stmt = conn.createStatement
rs = stmt.executeQuery("SELECT , FROM Administrators")
while (rs.next) do
 puts rs.getString(1) + ' ' + rs.getString(2)
end

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

jruby -S APISelect.rb

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