org.mojavemvc.annotations

Annotation Type Action

@Retention(value=RUNTIME)
@Target(value=METHOD)
public @interface Action

A controller class's exposed methods are annotated with this annotation to flag them as action methods. A request always invokes a controller action method (unless it is intercepted by an interceptor). It's value is the value of the action parameter sent in the request. It's value is optional. If no value is specified, the method's name will be used as its value.

As an example, consider the following method (we'll assume it is declared in the context of a controller class, called "some-controller"):

 @Action
 public View sayHello() {
     return new JSP("hello");
 }
 

We can invoke this method by making the following request:

 http://.../some-controller/sayHello
 

If we provide a value to the annotation, then we specify the name of action that is referred to in the request parameter:

 @Action("say-hello")
 public View sayHello() {
     return new JSP("hello");
 }
 

We can invoke the above method by making the following request:

 http://.../some-controller/say-hello
 

A method annotated with this annotation must be public. It must also return a View. If it does not, the application will throw an Exception during the initialization of the application in the servlet container. An Exception will also be thrown if it returns a null View.

Action methods can also accept parameters. Please see Param for more information.

Author:

Luis Antunes

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
String	value

Element Detail

value

public abstract String value

Default:

""