Method and apparatus using dictionary of methods and states for high performance context switching between build and run modes in a computer application builder program

• US 5,463,769 A
• Filed: 12/15/1993
• Issued: 10/31/1995
• Est. Priority Date: 12/15/1993
• Status: Expired due to Fees

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Chow, Alex C., Gest, Stephen B., Tate, Bruce A.
• Primary Examiner(s): Black, Thomas G.
• Assistant Examiner(s): HOMERE, JEAN RAYMOND
• Application Number:
  US08/168,104
• Time in Patent Office: 685 Days
• Field of Search: 395/600, 395/650, 395/159, 395/425, 364/DIG. 1
• US Class Current: 719/315
• CPC Class Codes: G06F 8/34 Graphical or visual programming

Abstract

A system and method for changing the methods of an object based on the mode of the application. Two types of dictionaries are used, a first type which defines all of the methods for an object for a particular mode and a second type which defines all of the modes supported by an application. In addition, a variable can be used to store the dictionary of methods for the current mode. This invention uses object oriented programming techniques.

Claims

1. An object oriented method for mode switching between build and run modes in a computer application builder program, comprising the steps of:

providing a plurality of dictionaries as dam structures which use keys to identify objects which implement methods, wherein at least first and second ones of said dictionaries define one or more methods for a first and a second mode and a third one of said dictionaries is a mode dictionary which defines build and run modes for an application program being programmed using the computer application builder program;

identifying one or more keys for each of said dictionaries; and

switching between build and run modes of the application program being programmed using the computer application builder program by using said one or more keys for said mode dictionary to retrieve a method dictionary for a corresponding mode.

2. An object oriented method for mode switching, as recited in claim 1, further comprising the step of providing a variable in which said key for one of said method dictionaries is maintained.

3. A method for context switching between modes, as recited in claim 2, wherein said step of switching further includes updating said variable with said key of said method dictionary, said key corresponding to the current mode.

4. A method for context switching between modes, as recited in claim 1, further comprising the step of invoking a method of the dictionary obtained for a new mode.

5. An apparatus for context switching between build and run modes in a computer application builder, comprising:

a plurality of dictionaries in computer storage as data structures which use keys to identify objects which implement methods, wherein at least first and second ones of said dictionaries define one or more methods for a first and second mode and a third one of said dictionaries is a mode dictionary which defines build and run modes for an application program being programmed by said computer application builder and each of said dictionaries include one or more keys for each of said dictionaries; and

switching means for context switching between build and run modes of the application program being programmed on the computer application builder, said switching means reading said one or more keys for said mode dictionary to retrieve a method dictionary for a corresponding mode.

6. An apparatus for context switching, as recited in claim 5, further comprising means for invoking a method of the dictionary obtained for the current mode.

7. An apparatus for context switching, as recited in claim 5, further comprising a variable in computer storage in which said key for one of said method dictionaries is maintained.

8. An apparatus for context switching, as recited in claim 7, wherein said switching means further includes means for updating said variable with said key for one of said method dictionaries, said key corresponding to the current mode.