Connect to Plaid Data in JRuby

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Plaid JDBC Driver

Rapidly create and deploy powerful Java applications that integrate with Plaid account data including Assets, Investments, Liabilities, Transactions, and more!

Create a simple JRuby app with access to live Plaid data.

JRuby is a high-performance, stable, fully threaded Java implementation of the Ruby programming language. The CData JDBC Driver for Plaid makes it easy to integrate connectivity to live Plaid data in JRuby. This article shows how to create a simple JRuby app that connects to Plaid data, executes a query, and displays the results.

Configure a JDBC Connection to Plaid Data

Before creating the app, note the installation location for the JAR file for the JDBC Driver (typically C:\Program Files\CData\CData JDBC Driver for Plaid\lib).

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

You can connect to Plaid using the embedded OAuth connectivity. When you connect, the Plaid OAuth endpoint opens in your browser. Log in and grant permissions to complete the OAuth process. See the OAuth section in the online Help documentation for more information on other OAuth authentication flows.

Optionally set the Account Id property to return data related to a specific Account.

Built-in Connection String Designer

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

java -jar cdata.jdbc.plaid.jar

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

Below is a typical JDBC connection string for Plaid:


Create a JRuby App with Connectivity to Plaid Data

Create a new Ruby file (for example: PlaidSelect.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 Plaid 2018/lib/cdata.jdbc.plaid.jar' url = "jdbc:plaid:AccountId=123456789;InitiateOAuth=GETANDREFRESH" conn = java.sql.DriverManager.getConnection(url) stmt = conn.createStatement rs = stmt.executeQuery("SELECT AccountId, Name FROM Transactions") while ( do puts rs.getString(1) + ' ' + rs.getString(2) end

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

jruby -S PlaidSelect.rb

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