Polymorphic zone

A polymorphic zone is an element of presentation whose appearance is delegated to a display method in the business model. The separation between the look and the behavior is preserved because a display method is again associated to a web element in the presentation and navigation model

Entry context

A polymorphic zone must be associated to an operation in a class of the business model. That imposes the existence of particular variables in the entry context:

• a variable named this with the type of the class selected: it contains the object on which the display method is applied
• variables corresponding to each parameter of the operation selected: they contain the values transmitted to the display method. A display operation must return Void, String or Text. If the operation returns String or Text, all output is buffered before it is written in the output stream.

All other non session variables are useless in the case of a polymorphic zone.

Entry action

A polymorphic zone has no entry action, however, each executable web element associated to a display method can have one.

Properties

Name	Name of the polymorphic zone. It is mandatory. It will be part of the URL that will be used to access a web element in this web folder.
Folder	Qualified name of the parent web folder
HTML file	Always checked
Entry file	A polymorphic zone can never be an entry page since the this variable must be defined.
HTML fragment	Check if this polymorphic zone is treated as a fragment.
Filter out to tag	Ignored
Interfacing	Ignored
For test purpose	If checked and this zone is in an imported module, this zone does not participate in the generation of the entire web application.
Source filter	Ignored