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JDBI からDataRobot Data のデータアクセスオブジェクトを作成

JDBI でDataRobot data 用のSQL オブジェクトAPIを作成する方法を概説します。

JDBI は、Fluent スタイルとSQL オブジェクトスタイルという2つの異なるスタイルAPI を公開する、Java 用のSQL コンビニエンスライブラリです。CData JDBC Driver for DataRobot は、Java アプリケーションとリアルタイムDataRobot data のデータ連携を実現します。これらの技術を組み合わせることによって、DataRobot data へのシンプルなコードアクセスが可能になります。ここでは、基本的なDAO(Data Access Object )とそれに付随するDataRobot data の読み書きのためのコードの作成について説明します。

DataRobot Predictions Entity のDAO を作成

The interface below declares the desired behavior for the SQL object to create a single method for each SQL statement to be implemented.

public interface MyPredictionsDAO { //request specific data from DataRobot (String type is used for simplicity) @SqlQuery("SELECT Prediction1Value FROM Predictions WHERE Id = :id") String findPrediction1ValueById(@Bind("id") String id); /* * close with no args is used to close the connection */ void close(); }

DataRobot への接続を開く

Collect the necessary connection properties and construct the appropriate JDBC URL for connecting to DataRobot.

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.

A connection string for DataRobot will typically look like the following:

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

Use the configured JDBC URL to obtain an instance of the DAO interface.The particular method shown below will open a handle bound to the instance, so the instance needs to be closed explicitly to release the handle and the bound JDBC connection.

DBI dbi = new DBI("jdbc:datarobot:PredictionInstance=myinstance.orm.datarobot.com;DataFile=PATH\TO\input_file.csv;DataRobotKey=123-abc-456-def;User=username;Password=password;"); MyPredictionsDAO dao = dbi.open(MyPredictionsDAO.class); //do stuff with the DAO dao.close();

DataRobot Data について

With the connection open to DataRobot, simply call the previously defined method to retrieve data from the Predictions entity in DataRobot.

//disply the result of our 'find' method String prediction1Value = dao.findPrediction1ValueById("1"); System.out.println(prediction1Value);

Since the JDBI library is able to work with JDBC connections, you can easily produce a SQL Object API for DataRobot by integrating with the CData JDBC Driver for DataRobot.Download a free trial and work with live DataRobot data in custom Java applications today.

 
 
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