CanDI Pattern Tutorial: GetServlet

GetServlet retrieves the service pattern, demonstrating that the service is shared between all injecting classes

Demo Links

• SetServlet blue (/set?color=blue)
• SetServlet red (/set?color=red)
• GetServlet (/get)
• index.jsp
• index.php
• CanDI pattern tutorial

CanDI Service Pattern

CanDI Plugin/Extension Pattern

1. BlueResourceBean[blue resource]
2. GreenResourceBean[default]
3. RedResourceBean[red resource]
4. StartupResourceBean[MyStartupBean: initial value]

CanDI Startup Pattern

Demo Architecture

Code

public class GetServlet extends HttpServlet {
  // service pattern
  private @Inject MyService _service;

  // plugin/extension pattern
  private @Any Instance<MyResource> _resources;

  // startup pattern
  private @Inject StartupResourceBean _startupResource;

  ...
}