Protected resource access in an object-oriented computing...

Details Protected resource access in an object-oriented computing... Protected resource access in an object-oriented computing...

2006-01-10

2006-01-10

Courtenay, III, St. John (Department: 2194)

Electrical computers and digital processing systems: interprogra

Interprogram communication using message

Object oriented message

C717S116000

Reexamination Certificate

active

06986144

ABSTRACT:
Access is provided in an object-oriented computing environment by an instance of a first class to a selected protected resource of an instance of a second class. This involves defining a third class that includes a protected virtual method for accessing the selected protected resource. The first class is defined as a subclass of the third class such that the first class inherits from the third class an access-resource method for the protected resource and a pointer to an instance of the second class as an implementation of the third class. The second class is defined as a subclass of the third class such that the second class inherits from the third class and implements the protected virtual method for accessing the selected protected resource by overloading that method. With this structure in place, an instance of the first class calls the access-resource method inherited from the third class, which access-resource method uses the pointer to the instance of the second class and the overloaded method to access the resource.

REFERENCES:
patent: 6507946 (2003-01-01), Alexander et al.
patent: 6658657 (2003-12-01), Lueh
patent: 6779188 (2004-08-01), Blandy et al.
Stroustrup, B.,The C++ Programming Language, New York Addison Wesley, pp. 191-193, 434-439, 457-465 (XP002018415).

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