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JRuby からDataRobot Data にデータ連携

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

DataRobot 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 DataRobot\lib).

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

To connect to DataRobot, the following connection properties are required: User, Password, and PredictionInstance. DataRobotKey may also be required depending on your type of DataRobot predictions instance. If using the Predictions API, DataFile is required. The CSV DataFile should include a header row as the first row of the datafile. APIKey is not required, but can be supplied. If not supplied, the driver will handle obtaining an APIKey.

User, DataRobotKey, and APIKey are the credentials for the DataRobot account.

ProjectID, DataFile, and ModelId are the parameters for the project, dataset, and model type.

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

java -jar cdata.jdbc.datarobot.jar

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

Below is a typical JDBC connection string for DataRobot:

jdbc:datarobot:PredictionInstance=myinstance.orm.datarobot.com;DataFile=PATH\TO\input_file.csv;DataRobotKey=123-abc-456-def;User=username;Password=password;

DataRobot Data への接続性を持つJRuby アプリを作成

Create a new Ruby file (for example: DataRobotSelect.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 DataRobot 2018/lib/cdata.jdbc.datarobot.jar' url = "jdbc:datarobot:PredictionInstance=myinstance.orm.datarobot.com;DataFile=PATH\TO\input_file.csv;DataRobotKey=123-abc-456-def;User=username;Password=password;" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT Id, Prediction1Value FROM Predictions") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S DataRobotSelect.rb

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

 
 
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