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

Create a DAO for the Float Accounts 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 MyAccountsDAO {
  //request specific data from Float (String type is used for simplicity)
  @SqlQuery("SELECT Name FROM Accounts WHERE Active = :active")
  String findNameByActive(@Bind("active") String active);

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

Open a Connection to Float

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

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

Float API Profile Settings

Obtain your API key from your Float Account Settings page under the API Access Token section.

Built-in Connection String Designer

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

jdbc:api:Profile=C:\profiles\Float.apip;ProfileSettings='APIKey=your_api_key';

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\Float.apip;ProfileSettings='APIKey=your_api_key';");
MyAccountsDAO dao = dbi.open(MyAccountsDAO.class);

//do stuff with the DAO

dao.close();

Read Float Data

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

//disply the result of our 'find' method
String name = dao.findNameByActive("true");
System.out.println(name);

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