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Connect to Azure Table Data in JRuby


Create a simple JRuby app with access to live Azure Table data.

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

Configure a JDBC Connection to Azure Table 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 Azure Table\lib).

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

Specify your AccessKey and your Account to connect. Set the Account property to the Storage Account Name and set AccessKey to one of the Access Keys. Either the Primary or Secondary Access Keys can be used. To obtain these values, navigate to the Storage Accounts blade in the Azure portal. You can obtain the access key by selecting your account and clicking Access Keys in the Settings section.

Built-in Connection String Designer

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

java -jar cdata.jdbc.azuretables.jar

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

Below is a typical JDBC connection string for Azure Table:

jdbc:azuretables:AccessKey=myAccessKey;Account=myAccountName;

Create a JRuby App with Connectivity to Azure Table Data

Create a new Ruby file (for example: AzureTablesSelect.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 Azure Table 2018/lib/cdata.jdbc.azuretables.jar' url = "jdbc:azuretables:AccessKey=myAccessKey;Account=myAccountName;" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT Name, Price FROM NorthwindProducts") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S AzureTablesSelect.rb

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