class function

Syntax

class ClassName [{extends | implements} SuperClassName]
   [Method_declarations]
   [Property_declarations]
[protected
   [Method_declarations]
   [Instance_declarations]
   [Constant_declaration]]
[private
   [Method_declarations]
   [Instance_declarations]
   [Constant_declaration]]
end-class

Where Method_declarations are of the form:

method methodname([MethodParam1 [, MethodParam2...] [Returns Datatype]] [abstract])

Where Property_declarations are of the form:

property DataType PropertyName {{[get] | [set]} | [abstract] | [readonly]}

Where Instance_declarations are of the form:

instance DataType &Variable1 [, &Variable2...]

Where Constant_declarations are of the form:

constant &Constant = {Number  | String | True | False | Null }

Description

Use the Class language construct to build application classes in an application package. All classes within a package must be uniquely named, however, classes contained in different packages do not have to be named uniquely.

External function declarations are allowed in application classes, in the global and component variable declarations, after the class declaration (after the end-class statement), and before the method definitions.

Parameters

Parameter	Description
ClassName	Specify the name of the class that you are creating. All classes within a package must be uniquely named, however, classes contained in different packages do not have to be named uniquely.
extends | implements SuperClassName	For a regular class, specify the name of the class that this class extends. If the class is an interface type of class, specify the name of the interface that this class implements. Important: You must import the class to extend it.
Method_declarations	Specify the methods (and their signature) as used in this class.
Property_declarations	Specify the properties, and their usage, in this class.
protected	Use this keyword to declare any methods, constants, or instance variables as protected to the class, that is, are only visible to the declaring class and subclasses.
private	Use this keyword to declare any methods, constants, or instance variables as private to the class, that is, they can't be accessed by any other classes.
Instance_declarations	Specify any variables that should be in any instance (object) of the class.
Constant_declarations	Specify any constants that should be used with this class.

Returns

None.

Example

class Example extends ExampleBase
   method NumToStr(&Num As number) Returns string;
   method AppendSlash();
   property number SlashCount get;
   property number ImportantDayOfWeek get set;
   property string SlashString readonly;
   property date ImportantDate;
private
   method NextDayOfWeek(&DoW As number) Returns date;
   constant &Sunday = 1;
   instance number &BaseString;
end-class;