Connect to Guru Data in JRuby

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

Configure a JDBC Connection to Guru 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 Guru\lib).

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

Start by setting the Profile connection property to the location of the Guru Profile on disk (e.g. C:\profiles\Guru.apip). Next, set the ProfileSettings connection property to the connection string for Guru (see below).

Guru API Profile Settings

In Guru, navigate to Settings > API and click Create New API Token. Use your email address as the User and the generated token as the Password.

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the Guru 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 Guru:

jdbc:api:Profile=C:\profiles\Guru.apip;ProfileSettings='User=your_email;Password=your_api_token';

Create a JRuby App with Connectivity to Guru 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 Guru 2018/lib/cdata.jdbc.api.jar'

url = "jdbc:api:Profile=C:\profiles\Guru.apip;ProfileSettings='User=your_email;Password=your_api_token';"
conn = java.sql.DriverManager.getConnection(url)
stmt = conn.createStatement
rs = stmt.executeQuery("SELECT User, Type FROM Analytics")
while (rs.next) do
  puts rs.getString(1) + ' ' + rs.getString(2)
end

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

jruby -S APISelect.rb

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