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JRuby からSQL Server Data にデータ連携

リアルタイムSQL Server data に連携するシンプルなJRuby アプリケーションを作成します。

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 SQL Server を使用すると、JRuby からリアルタイムSQL Server data へのデータ連携を簡単に実装できます。ここでは、SQL Server 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。

SQL Server Data にJDBC で接続

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 SQL Server\lib).

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

Connecting to Microsoft SQL Server

Connect to Microsoft SQL Server using the following properties:

  • Server: The name of the server running SQL Server.
  • User: The username provided for authentication with SQL Server.
  • Password: The password associated with the authenticating user.
  • Database: The name of the SQL Server database.

Connecting to Azure SQL Server and Azure Data Warehouse

You can authenticate to Azure SQL Server or Azure Data Warehouse by setting the following connection properties:

  • Server: The server running Azure. You can find this by logging into the Azure portal and navigating to "SQL databases" (or "SQL data warehouses") -> "Select your database" -> "Overview" -> "Server name."
  • User: The name of the user authenticating to Azure.
  • Password: The password associated with the authenticating user.
  • Database: The name of the database, as seen in the Azure portal on the SQL databases (or SQL warehouses) page.

ビルトイン接続文字列デザイナー

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

java -jar cdata.jdbc.sql.jar

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

Below is a typical JDBC connection string for SQL Server:

jdbc:sql:User=myUser;Password=myPassword;Database=NorthWind;Server=myServer;Port=1433;

SQL Server Data への接続性を持つJRuby アプリを作成

Create a new Ruby file (for example: SQLSelect.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 SQL Server 2018/lib/cdata.jdbc.sql.jar' url = "jdbc:sql:User=myUser;Password=myPassword;Database=NorthWind;Server=myServer;Port=1433;" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT ShipName, Freight FROM Orders") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S SQLSelect.rb

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

 
 
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