Supported Types

The Gently System supports the following types:

int and int[]
boolean
String and String[]

In forms, you use input elements (widgets) to supply actual parameters for the formal parameters of the generated method, which is called, when the form's submit button is pressed.

You can't use every input element with every target type. Example given, it is not sensible to use a HTML-textfield to enter a boolean value.

The following table specifies which combinations of widgets and types are admitted by Gently. Wrong combinations are refused by Gently's static type checker. The first column of the table shows the Gently keyword used in the gently form specification.

Gently keyword

widget

int

int[]
boolean

String

String[]

TEXT

XXX

XXX

TEXTAREA

XXX

CHECKBOX

XXX

RADIOBUTTON

XXX

XXX

COMBOBOX

XXX

XXX

MULTIPLELIST

XXX

XXX

HIDDEN PARAMETER

XXX

XXX

XXX

XXX

XXX

If an HTML textfield is used to enter an int value, the generated system dynamically checks, if the entered value is really an int. If not an error is reported.
With Gently, the only possibility to enter boolean values interactively is a chekbox field.
Note that a group of radioboxes does not fit with array types, but just with ground types int and String. So it serves as an enumeration. This is true for comboxes as well.
With Gently, the only possibility to enter an array of values interactively is to use a select option structure with the multiple option set. Such a structure is generated in Gently by using the MULTIPLELIST keyword.
Hidden parameters may be of any types.

Gently keyword	widget	int	int[]	boolean	String	String[]
TEXT		XXX			XXX
TEXTAREA					XXX
CHECKBOX				XXX
RADIOBUTTON		XXX			XXX
COMBOBOX		XXX			XXX
MULTIPLELIST			XXX			XXX
HIDDEN PARAMETER		XXX	XXX	XXX	XXX	XXX