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Connect to SendGrid Data in JRuby


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

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

Configure a JDBC Connection to SendGrid 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 SendGrid\lib).

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

To make use of all the available features, provide the User and Password connection properties.

To connect with limited features, you can set the APIKey connection property instead. See the "Getting Started" chapter of the help documentation for a guide to obtaining the API key.

Built-in Connection String Designer

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

java -jar cdata.jdbc.sendgrid.jar

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

Below is a typical JDBC connection string for SendGrid:

jdbc:sendgrid:User=admin;Password=abc123;

Create a JRuby App with Connectivity to SendGrid Data

Create a new Ruby file (for example: SendGridSelect.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 SendGrid 2018/lib/cdata.jdbc.sendgrid.jar' url = "jdbc:sendgrid:User=admin;Password=abc123;" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT Name, Clicks FROM AdvancedStats") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S SendGridSelect.rb

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