Peoplesoft Application Class/ Application Packages

Application Class  What is an Application Class ?  Benefits of Application Class  Application Class Structure  Terminologies  System variables & Overriding Properties 

Questions ???

Application Class App Class is a PeopleCode Program at base level 

Ability to reuse – by writing Generic Code. Base classes are defined in a way that can be reused



Easy to Maintain – since all common code resides at one place.



Inheritance – Extensibility



Encapsulation – Ability to hide implementation details while extending the class; this is implemented through Private Instance variables and private methods.



Dynamic Execution – Call dynamic methods based on system variables.

General Class Structure  Imports  Class Name  Class Extensions  Declaration of Public External interface  Declaration of private instance variables and methods  Definition of Methods  Constructors

General Class Structure contd…

Subclass: An Extended Class – Inherits all the public properties and methods from the extended class

SuperClass:

Class being extended

Methods : 1. Procedure or set of PeopleCode – activated by an Object 2. Methods parameters can be passed by Reference or passed by value Property:

Attribute of an Object

Constructors: 1. A method with in a Class – holds the same name as the Class 2. Executed once an Object is instantiated for the Class – Objects are activated using the keyword Create () 3. Used to initialize default values for Properties & Instance variables System Variables: %This %Super

Class Definition

Class Constructor

Property – Get / Set

Calling Base Class

Class Extension

Instantiate Parent/Base class from Extended Class

Override Method in Extended Class

Call common method from Extended Class

Question 1

Question 2

Question 4