Object oriented programming based global registry system, method, and article of manufacture

• US 5,822,580 A
• Filed: 01/19/1996
• Issued: 10/13/1998
• Est. Priority Date: 01/19/1996
• Status: Expired due to Term

• Current Assignee: Apple Inc.
• Original Assignee: Object Technology Licensing Corporation (Apple Inc.)
• Inventors: Leung, Wyatt
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): MIZRAHI, DIANE D
• Application Number:
  US08/590,344
• Time in Patent Office: 998 Days
• Field of Search: 395/610, 395/614, 395/683
• US Class Current: 717/164
• CPC Class Codes: G06F 9/465 Distributed object oriented systems remote method invocation [RMI] G06F9/548
• CPC Class Codes: Y10S 707/955 Object-oriented
• CPC Class Codes: Y10S 707/99944 Object-oriented database structure

Abstract

A data-driven global registry method for use to extend a framework in an object oriented programming (OOP) based computer system is provided. The method includes providing a new class defined in a shared class library which has data members and member functions related to a particular task. In addition, a new class attributes file which specifies attributes associated with the new class is generated. The new class attributes file is placed in a global registry configuration directory in a computer system such that a plurality of client applications can access the global registry configuration directory to determine if the new class has been installed in the class library. In an alternative embodiment, an object-based global registry method is provided. In addition, a storage device readable by a computer system for implementing either OOP-based global registry method and OOP-based global registries themselves are provided.

Claims

1. A data-driven global registry method to extend any framework in an object oriented programming (OOP) based computer system, the method comprising the steps of:

(a) providing a new class defined in a shared class library on the server which has data members and member functions related to a particular task;

(b) generating a new class attributes file which specifies attributes associated with the new class; and

(c) placing the new class attributes file in a global registry configuration directory such that a plurality of clients can access the global registry configuration directory to determine if the new class has been installed in the class library.

2. The data-driven global registry method of claim 1 further comprising the steps of:

(d) retrieving a list of classes which match a client'"'"'s attribute query based on contents of a plurality of class attributes files in the global registry configuration directory;

(e) selecting a particular class from the retrieved list of classes based on a predetermined preference set;

(f) generating an instance of the selected class as a new object; and

(g) initializing the new object with client specified parameters.

3. The data-driven global registry method of claim 2 wherein the initializing step comprises initializing the new object with default client specified parameters unless particular client specified parameters are obtained from the client.

4. The data-driven global registry method of claim 2 further comprising the step of scanning the global registry configuration directory for class attributes files to generate a lookup table containing an entry for each class and the associated attributes in the class attributes files and wherein the retrieving step comprises generating the list of classes by searching the lookup table for entries which match the client'"'"'s attribute query.

5. A program storage device readable by a computer system tangibly embodying a program of instructions executable by the computer system to perform an object oriented programming (OOP) based data-driven global registry method for use by a client, the method emodied on the storage device comprising the steps of:

(a) providing a new class defined in a shared class library which has data members and member functions related to a particular task;

(b) generating a new class attributes file which specifies attributes associated with the new class; and

(c) placing the new class attributes file in a global registry configuration directory such that a plurality of client'"'"'s can access the global registry configuration directory to determine if the new class has been installed in the class library.

6. The program storage device of claim 5 wherein the method further comprises the steps of:

(d) retrieving a list of classes which match a client'"'"'s attribute query based on contents of a plurality of class attributes files in the global registry configuration directory;

(e) selecting a particular class from the retrieved list of classes based on a predetermined preference set;

(f) generating an instance of the selected class as a new object; and

(g) initializing the new object with client specified parameters.

7. The program storage device of claim 6 wherein the initializing step of the method comprises initializing the new object with default client specified parameters unless particular client specified parameters are obtained from the client.

8. The program storage device of claim 6 wherein the method further comprises the step of scanning the global registry configuration directory for class attributes files to generate a lookup table containing an entry for each class and the associated attributes in the class attributes files and wherein the retrieving step comprises generating the list of classes by searching the lookup table for entries which match the client'"'"'s attribute query.

9. A data-driven global registry for use to extend a framework in an object oriented programming (OOP) based computer system, comprising:

(a) storage means, on a server in the OOP based computer system, for storing OOP-based classes, the classes including a new class defined in a shared class library, which has data members and member functions related to a particular task; and

(b) a processor, operatively coupled to the storage means, which generates a new class attributes file that specifies attributes associated with the new class and places the new class attributes file in a global registry configuration directory on the storage means such that a plurality of clients can access the global registry configuration directory to determine if the new class has been installed in the class library.

10. The data-driven global registry of claim 9 further comprising an object instantiation means, operatively coupled to the storage means, for retrieving a list of classes which match a client'"'"'s attribute query based on contents of a plurality of class attributes files in the global registry configuration directory, selecting a particular class from the retrieved list of classes based on a predetermined preference set, generating an instance of the selected class as a new object, and initializing the new object with client specified parameters.

11. The data-driven global registry of claim 10 wherein the object builder means comprises means for initializing the new object with default client specified parameters unless particular client specified parameters are obtained from the client.

12. The data-driven global registry of claim 10 wherein the object builder means comprises:

(a) means for scanning the global registry configuration directory for class attributes files to generate a lookup table containing an entry for each class and the associated attributes in the class attributes files; and

(b) means for generating the list of classes by searching the lookup table for entries which match the client'"'"'s attribute query.

13. An object-based global registry method for use to extend a framework in an object oriented programming (OOP) based computer system, comprising the steps of:

(a) providing a new class defined in a shared class library on the server which has data members and member functions related to a particular task; and

(b) providing an object factory class for the new class, defined in the shared class library, which has data members and member functions related to creating instances of the new class and related to attributes associated with the new class such that a plurality of client can access the class library to determine if the new class has been installed in the class library by accessing the provided object factory class.

14. The object-based global registry method of claim 13 further comprising the steps of:

(c) retrieving a list of object factory classes which match a client'"'"'s attribute query based on contents of a plurality of object factory classes in the class library;

(d) selecting an object factory class from the retrieved list of object factory classes based on a predetermined preference set;

(e) generating an instance of a new class as a new object with the selected object factory class; and

(f) initializing the new object with client application specified parameters.

15. The object-based global registry method of claim 14 wherein the initializing step comprises initializing the new object with default client specified parameters unless particular client specified parameters are obtained from the client.

16. The object-based global registry method of claim 13 further comprising the step of storing the object factory class for the new class along with a plurality of other object factory classes in a single global registry file.

17. The object-based global registry method of claim 14 further comprising the step of storing the object factory class for the new class along with a plurality of other object factory classes in a global registry file and wherein the retrieving step comprises resurrecting only those object factory classes from the global registry file which match a client'"'"'s attribute query to form the list of object factory classes.

18. A program storage device readable by a computer system tangibly embodying a program of instructions executable by the computer system to perform an object oriented programming (OOP) based global registry method for use to extend a framework, the method embodied on the storage device comprising the steps of:

(a) providing a new class defined in a shared class library on the server which has data members and member functions related to a particular task; and

(b) providing an object factory class for the new class, defined in the shared class library, which has data members and member functions related to creating instances of the new class and related to attributes associated with the new class such that a plurality of clients can access the class library to determine if the new class has been installed in the class library by accessing the provided object factory class.

19. The program storage device of claim 18 wherein the method further comprises the steps of:

(c) retrieving a list of object factory classes which match a client'"'"'s attribute query based on contents of a plurality of object factory classes in the class library;

(d) selecting an object factory class from the retrieved list of object factory classes based on a predetermined preference set;

(e) generating an instance of a new class as a new object with the selected object factory class; and

(f) initializing the new object with client specified parameters.

20. The program storage device of claim 19 wherein the initializing step comprises initializing the new object with default client specified parameters unless particular client specified parameters are obtained from the client.

21. The program storage device of claim 18 wherein the method further comprises the step of storing the object factory class for the new class along with a plurality of other object factory classes in a single global registry file.

22. The program storage device of claim 19 wherein the method further comprises the step of storing the object factory class for the new class along with a plurality of other object factory classes in a global registry file and wherein the retrieving step comprises resurrecting only those object factory classes from the global registry file which match a client'"'"'s attribute query to form the list of object factory classes.

23. A global registry for use to extend a framework in an object oriented programming (OOP) based computer system, comprising:

(a) storage means, on a server in the computer system, for storing OOP-based classes, the classes, including;

(i) a new class defined in a shared class library on the server which has data members and member functions related to a particular task; and

(ii) an object factory class for the new class, defined in the shared class library, which has data members and member functions related to creating instances of the new class and related to attributes associated with the new class such that a plurality of clients can access the class library to determine if the new class has been installed in the class library by accessing the object factory class; and

(b) a processor, operatively coupled to the storage means, which generates a new class object as an instance of the new class stored in the storage means upon request by a client.

24. The global registry of claim 23 further comprising an object instantiation means, operatively coupled to the storage means, for retrieving a list of object factory classes which match a client'"'"'s attribute query based on contents of a plurality of object factory classes in the class library, selecting an object factory class from the retrieved list of object factory classes based on a predetermined preference set, generating an instance of a new class as a new object with the selected object factory class, and initializing the new object with client specified parameters.

25. The global registry of claim 24 wherein the object builder means comprises means for initializing the new object with default client specified parameters unless particular client specified parameters are obtained from the client.

26. The global registry of claim 23 further comprising means for storing the object factory class for the new class along with a plurality of other object factory classes in a single global registry file.

27. The global registry of claim 24 further comprising means for storing the object factory class for the new class along with a plurality of other object factory classes in a global registry file and wherein the object builder means comprises means for resurrecting only those object factory classes from the global registry file which match a client'"'"'s attribute query to form the list of object factory classes.