Navigation decision centers

Linker

 A linker is a dynamic equivalent of the hypertext link in HTML. It links a web element to several other web elements that are not fragments. This decision center selects a target web element according to the result of the evaluation of the constraints and simulates a jump to this page. It inserts an URL to itself instead of the label in the generated text. The dynamic behavior of a linker is evaluated after the user has clicked on the link.

Properties

Name	Name of the decision center. Netsilon is able to generate a name or modify it if it is already defined.
Type	Link
Identifier	A unique number in the subsystem that identifies this decision center in the HTML formatted texts treated by Netsilon.
Default attachment	The name of the web element linked to this decision center by a default decision constraint or none if no default decision is defined.
Protocol	Defaults to "http": The name of the protocol used in the URL of the target page. Can be set for example to "https".
Host	Default to "": when empty, the host name of the current deployment site is used. If not empty, the result of the evaluation of this expression will be set as the host name in the URL of the target page.
Strip Session ID	If checked, the session is not transmitted to the target page.

Form

 The purpose of this decision center is to treat the forms; its label is thus found as the value of the attribute action of the HTML tag form. If the label is found in the HTML text of web file, Netsilon is able to retrieve the name of all input elements that can appear in a form. These names appear as variables in the local variable context of the form and are commented as //From form. Basically, these variables have the same behavior as User defined variables, they are just defined by Netsilon. They are initialized with the value that is extracted from the information posted during the submission of the form. The type of these variables is initially String but may be changed by the user. The value is automatically converted from its string representation to the type of the variable. In case of a collection type, values defined one or many times are inserted in a newly created collection. One can add User defined variables in the local context of the decision center when for example, the HTML text of the form is built by a sequence of compositions.

A form decision center should be linked to non fragment web elements.

Special treatment

When an input type image named for example im is used in a form, Netsilon will create two variables named im_x and im_y that will be initialized with the coordinates of the click in the image. The type of those variables is initially String but can be changed to an Integer subtype.

When using input types able to return multiple values, for example a multiple select input type, the name of the input type must be followed by [] in the HTML source and Netsilon will be able to create a variable with that name and the type Sequence(String).

Properties

Name	Name of the decision center. Netsilon is able to generate a name or modify it if it is already defined.
Type	Form
Identifier	A unique number in the subsystem that identifies this decision center in the HTML formatted texts treated by Netsilon.
Default attachment	The name of the web element linked to this decision center by a default decision constraint or none if no default decision is defined.
Protocol	Defaults to "http": The name of the protocol used in the URL of this page. Can be set for example to "https".
Host	Default to "": when empty, the host name of the current deployment site is used. If not empty, the result of the evaluation of this expression will be set as the host name in the URL of this page.
Strip Session ID	If checked, the session is not transmitted to the target page.
Erroneous variable	The name of a set of strings that contains the names of all the form variables whose value could not be converted from string to the specified type during the elaboration of the entry context.