Create a Data Access Object for Tanda Data using JDBI

JDBI is a SQL convenience library for Java that exposes two different style APIs, a fluent style and a SQL object style. The CData JDBC Driver for Tanda integrates connectivity to live Tanda data in Java applications. By pairing these technologies, you gain simple, programmatic access to Tanda data. This article explains how to build a basic Data Access Object (DAO) and the accompanying code to read Tanda data.

Create a DAO for the Tanda ActiveShifts Entity

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 MyActiveShiftsDAO {
  //request specific data from Tanda (String type is used for simplicity)
  @SqlQuery("SELECT UserId FROM ActiveShifts WHERE Status = :status")
  String findUserIdByStatus(@Bind("status") String status);

  /*
   * close with no args is used to close the connection
   */
  void close();
}

Open a Connection to Tanda

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

Start by setting the Profile connection property to the location of the Tanda Profile on disk (e.g. C:\profiles\Tanda.apip). Next, set the ProfileSettings connection property to the connection string for Tanda (see below).

Tanda API Profile Settings

Register an OAuth application at the Tanda applications page by clicking New App and entering your app name and redirect URI.

Built-in Connection String Designer

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

java -jar cdata.jdbc.api.jar

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

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

jdbc:api:Profile=C:\profiles\Tanda.apip;Authscheme=OAuth;OAuthClientId=your_client_id;OAuthClientSecret=your_client_secret;CallbackUrl=your_callback_url;

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:api:Profile=C:\profiles\Tanda.apip;Authscheme=OAuth;OAuthClientId=your_client_id;OAuthClientSecret=your_client_secret;CallbackUrl=your_callback_url;");
MyActiveShiftsDAO dao = dbi.open(MyActiveShiftsDAO.class);

//do stuff with the DAO

dao.close();

Read Tanda Data

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

//disply the result of our 'find' method
String userId = dao.findUserIdByStatus("clocked_in");
System.out.println(userId);

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