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JRuby からSybase Data にデータ連携

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

Sybase 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 Sybase\lib).

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

To authenticate with Sybase, set User and Password. Additionally, set IntegratedSecurity; to true to use Windows authentication otherwise, Sybase authentication is used. Set the Server and Database properties. To secure connections with TLS/SSL, set Encrypt to true.

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 Sybase JDBC Driver.Either double-click the JAR file or execute the jar file from the command-line.

java -jar cdata.jdbc.sybase.jar

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

Below is a typical JDBC connection string for Sybase:

jdbc:sybase:User=myuser;Password=mypassword;Server=localhost;Database=mydatabase;

Sybase Data への接続性を持つJRuby アプリを作成

Create a new Ruby file (for example: SybaseSelect.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 Sybase 2018/lib/cdata.jdbc.sybase.jar' url = "jdbc:sybase:User=myuser;Password=mypassword;Server=localhost;Database=mydatabase;" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT Id, ProductName FROM Products") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S SybaseSelect.rb

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

 
 
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