Create a Data Access Object for Bitly 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 Bitly integrates connectivity to live Bitly data in Java applications. By pairing these technologies, you gain simple, programmatic access to Bitly data. This article explains how to build a basic Data Access Object (DAO) and the accompanying code to read Bitly data.

Create a DAO for the Bitly BitlinkCities 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 MyBitlinkCitiesDAO {
  //request specific data from Bitly (String type is used for simplicity)
  @SqlQuery("SELECT Clicks FROM BitlinkCities WHERE Country = :country")
  String findClicksByCountry(@Bind("country") String country);

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

Open a Connection to Bitly

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

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

Bitly API Profile Settings

Log into your Bitly account, go to Settings > Developer Settings, and generate a Generic Access Token.

Built-in Connection String Designer

For assistance in constructing the JDBC URL, use the connection string designer built into the Bitly 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 Bitly will typically look like the following:

jdbc:api:Profile=C:\profiles\Bitly.apip;ProfileSettings='APIKey=your_access_token';

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\Bitly.apip;ProfileSettings='APIKey=your_access_token';");
MyBitlinkCitiesDAO dao = dbi.open(MyBitlinkCitiesDAO.class);

//do stuff with the DAO

dao.close();

Read Bitly Data

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

//disply the result of our 'find' method
String clicks = dao.findClicksByCountry("United States");
System.out.println(clicks);

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