hirondelle.web4j.action
Interface Action

All Known Implementing Classes:

ActionImpl, ActionTemplateListAndEdit, ActionTemplateSearch, ActionTemplateShowAndApply

public interface Action

Process an HTTP request, and return a ResponsePage.

This interface is likely the most important abstraction in WEB4J. Almost every feature implemented by the programmer will need an implementation of this interface.

Typically, one of the ActionXXX abstract base classes are used to build implementations of this interface.

Method Summary

ResponsePage

execute() Execute desired operation.

Method Detail

execute

ResponsePage execute()
                     throws AppException

Execute desired operation.

Typical operations include :

• validate user input
• interact with the database
• place required objects in the appropriate scope
• set the appropriate ResponsePage.

Returns an identifier for the resource (for example a JSP) which will display the end result of this Action (using either a forward or a redirect).

Throws:

AppException