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JRuby からFreshBooks Data にデータ連携

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

FreshBooks 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 FreshBooks\lib).

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

To connect to FreshBooks, you can set the CompanyName and Token connection properties. Alternatively, you can use the OAuth authentication standard.

OAuth can be used to enable other users to access their own company data. To authenticate using OAuth, you will need to obtain the OAuthClientId and OAuthClientSecret by registering an app. See the "Getting Started" chapter of the help documentation for a guide to using OAuth.

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

java -jar cdata.jdbc.freshbooks.jar

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

Below is a typical JDBC connection string for FreshBooks:

jdbc:freshbooks:CompanyName=CData;Token=token;

FreshBooks Data への接続性を持つJRuby アプリを作成

Create a new Ruby file (for example: FreshBooksSelect.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 FreshBooks 2018/lib/cdata.jdbc.freshbooks.jar' url = "jdbc:freshbooks:CompanyName=CData;Token=token;" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT Username, Credit FROM Clients") while (rs.next) do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S FreshBooksSelect.rb

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

 
 
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