JRuby はRuby プログラミング言語の高性能で安定した、完全にスレッド化されたJava 実装です。CData JDBC Driver for Streak を使用すると、JRuby からリアルタイムStreak data へのデータ連携を簡単に実装できます。ここでは、Streak data に接続し、クエリを実行して結果を表示する簡単なJRuby アプリを作成する方法を説明します。
Before creating the app, note the installation location for the JAR file for the JDBC Driver (typically C:\Program Files\CDatat\CData JDBC Driver for Streak\lib).
JRuby natively supports JDBC, so you can easily connect to Streak and execute SQL queries.Initialize the JDBC connection with the getConnection function of the java.sql.DriverManager class.
Use the following steps to generate a new API key for authenticating to Streak.
For assistance in constructing the JDBC URL, use the connection string designer built into the Streak JDBC Driver.Either double-click the JAR file or execute the jar file from the command-line.
java -jar cdata.jdbc.streak.jar
Fill in the connection properties and copy the connection string to the clipboard.
Below is a typical JDBC connection string for Streak:
jdbc:streak:ApiKey=8c84j9b4j54762ce809ej6a782d776j3;
Create a new Ruby file (for example: StreakSelect.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 Streak 2018/lib/cdata.jdbc.streak.jar'
url = "jdbc:streak:ApiKey=8c84j9b4j54762ce809ej6a782d776j3;"
conn = java.sql.DriverManager.getConnection(url)
stmt = conn.createStatement
rs = stmt.executeQuery("SELECT UserKey, Email FROM Users")
while (rs.next) do
puts rs.getString(1) + ' ' + rs.getString(2)
end
With the file completed, you are ready to display your Streak data with JRuby.To do so, simply run your file from the command line:
jruby -S StreakSelect.rb
Writing SQL-92 queries to Streak allows you to quickly and easily incorporate Streak data into your own JRuby applications.Download a free trial today!