Access to Instance Variables within the same Class

ChiliJoe — Mon, 02 Jul 2007 10:19:23 +0000

In PeopleSoft application classes, instance variables are analogous to private variables in most object-oriented languages. This means that instance variables are inaccessible from PeopleCode outside the class where it is declared. I used to assume that a specific object (instance of a class) would only have access to its own instance variables. This appears not to be the case, as the following paragraphs in PeopleBooks (PeopleCode API Reference > Application Class > Self-Reference) states:

If you declare an instance variable as private you can still access it as a private property in another instance of the same class. For example, given the following declaration:
class Example
  private
     instance number &Num;
end-class;
A method of Example could reference another Example instance’s &Num instance variable as follows:
   &X = &SomeOtherExample.Num;

(more…)

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Access to Instance Variables within the same Class