Connect to Telegram Data in JRuby

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

Configure a JDBC Connection to Telegram 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 Telegram\lib).

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

Using API Key Authentication

Telegram uses Bot Tokens to authenticate API requests. You can obtain a Bot Token by creating a bot via BotFather on Telegram (https://t.me/BotFather). Once created, BotFather will provide a token in the format

123456789:ABCdefGhIJKlmNoPQRsTUVwxyZ

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

• AuthScheme: Set this to APIKey.
• APIKey: Set this to your Telegram Bot Token obtained from BotFather.

Example connection string

Profile=C:\profiles\Telegram.apip;ProfileSettings='APIKey=your_bot_token';

Built-in Connection String Designer

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

jdbc:api:Profile=C:\profiles\Telegram.apip;ProfileSettings='APIKey=your_bot_token';

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

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

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

jruby -S APISelect.rb

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