Controller Interface

You implement the Controller interface to create an instance of a worker class and call its methods to perform operations.

For more, see Working with Pages and Classes and ControllerResponse Class.

execute

This method is called when a user submits a <form> in a page with an action attribute that specifies the URL of a class that implements the Controller interface.

Your implementation of this method does the following:

• Creates an instance of a worker bean
• Creates an instance of ControllerResponse
• Calls the worker bean's methods
• Sets the return data via ControllerResponse.setData
• Sets the next page to display via ControllerResponse.setTargetPage

Syntax

ControllerResponse execute(HashMap params) throws Exception;

Parameters

params

The HTML form <input> fields in the page. For each field:

• The key of params is the name attribute of the <input> tag
• The value of params is the value attribute of the <input> tag

Return

See ControllerResponse Class.