WO1997013206B1 - Method and apparatus for controlling change propagation at run-time - Google Patents

Method and apparatus for controlling change propagation at run-time

Info

Publication number
WO1997013206B1
WO1997013206B1 PCT/US1996/015977 US9615977W WO9713206B1 WO 1997013206 B1 WO1997013206 B1 WO 1997013206B1 US 9615977 W US9615977 W US 9615977W WO 9713206 B1 WO9713206 B1 WO 9713206B1
Authority
WO
WIPO (PCT)
Prior art keywords
change
barrier
run
propagation
data
Prior art date
Application number
PCT/US1996/015977
Other languages
French (fr)
Other versions
WO1997013206A1 (en
Filing date
Publication date
Priority claimed from US08/540,392 external-priority patent/US5634056A/en
Application filed filed Critical
Priority to EP96936206A priority Critical patent/EP0870242A4/en
Priority to JP9514482A priority patent/JP2000509524A/en
Publication of WO1997013206A1 publication Critical patent/WO1997013206A1/en
Publication of WO1997013206B1 publication Critical patent/WO1997013206B1/en

Links

Abstract

A method for controlling the propagation of changes made to a data file in a system (300) of interrelated data files (404) is described. In one embodiment of the method of the invention, a run-time dependency management facility (380) is provided on the computer system (300) which is effective to generate under computer control a graph indicating relationships among the data files (304) and software tools (332) present on the system. A change is made to at least one of the data files (304) and a determination is made as to whether that change is significant. If a significant change is made, then at least one propagation barrier (384) is provided which is effective to prevent computer implemented propagation of the change in said data files (304) through at least one data file which is interdependent with the data file. In another embodiment, a computer readable medium (120) contains program instructions (400) for providing a run-time dependency management facility on a computer in which the run-time dependency is effective to generate under computer control a graph indicating relationship among the data files (304) and the software tools (316) residing on the system (300). The computer readable medium (120) further includes program instructions (400) for determining under computer control that the change to data in at least one of the data files (320) is not a significant change.

Claims

AMENDED CLAIMS[received by the International Bureau on 31 March 1997 (31.03.97); original claims 1, 10 and 14 amended; remaining claims unchanged (2 pages)]
1. A method for controlling the computer-implemented propagation of changes made to at least one data file throughout a system of interrelated data files resident on a computer system, said data files being interrelated by one or more software tools resident on said computer system, the method comprising the steps of:
a) providing a run-time dependency management facility on said computer system, said run-time dependency management facility being effective to generate under computer control a graph indicating relationships among said data files and said software tools;
b) changing data in at least one of said data files under computer control;
c) determining under computer control that said change to said data in said data file is not a significant change in response to said changing; and
d) activating under computer control at least one propagation barrier in response to said deteπnination, said propagation barrier being effective to prevent computer- implemented propagation of said change in said data file through at least one data file which is interrelated with said data file.
2. The method of claim 1 , wherein said propagation barrier is an input barrier which is activated in response to a determination that no significant change occurred since the last invocation of said tool.
3. The method of claim 2, wherein said step of activating said input barrier is performed by said run-time dependency management facility.
4. The method of claim 3, wherein said step of activating comprises sending a message from said run-time dependency management facility to said tools indicating that said input barrier is active.
5. The method of claim 4, wherein at least one of said tools activates an output barrier in response to said message from said run-time dependency management system.
6. The method of claim 2, wherein said propagation barrier is an output barrier which is activated in response to a determination that changes made to at least one of the output files of said tool is not a significant change.
7. The method of claim 6, wherein said step of determining that said change is not a significant change is performed by said tool.
8. The method of claim 7, wherein said tool notifies said run-time dependency facility that said change is not a significant change.
9. The method of claim 1, wherein said software tools are clever tools.
10. A computer system for controlling the computer-implemented propagation of changes made to at least one data file throughout a system of interrelated data files resident on a computer system, said data files being interrelated by one or more software tools resident on said computer system, said system comprising:
a) a run-time dependency management facility, said run-time dependency management facility being effective to generate under computer control a graph indicating relationships among said data files and said software tools;
b) an evaluator for determining under computer control that said change to said data in said data file is not a significant change, said evaluator being configured to be activated by a change in one of said data files; and
c) a propagation barrier activator for activating under computer control at least one propagation barrier in response to a determination by said evaluator that said change is not significant, wherein said propagation barrier is effective to prevent computer-implemented propagation of said change in said data file through at least one data file which is interdependent with said changed data file.
11. The computer system of claim 10, wherein said propagation barrier activator activates an input barrier in response to a determination by said evaluator that no significant change has occurred to said changed file since the last invocation of said tool.
12. The computer system of claim 11, wherein said propagation barrier activator activates an output barrier in response to a determination by said evaluator that said change is not a significant change.
13. The computer system of claim 10, wherein said tool is a clever tool.
14. A computer readable medium containing program instructions for:
a) providing a run-time dependency management facility on a computer system, said run-time dependency management facility being effective to generate under computer control a graph indicating relationships among interrelated data files and software tools resident on the computer system;
b) determining under computer control that said change to data in at least one of said data files is not a significant change, in response to said changing; and
18
PCT/US1996/015977 1995-10-06 1996-10-04 Method and apparatus for controlling change propagation at run-time WO1997013206A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96936206A EP0870242A4 (en) 1995-10-06 1996-10-04 Method and apparatus for controlling change propagation at run-time
JP9514482A JP2000509524A (en) 1995-10-06 1996-10-04 Method and apparatus for controlling runtime change propagation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/540,392 US5634056A (en) 1995-10-06 1995-10-06 Run time dependency management facility for controlling change propagation utilizing relationship graph
US08/540,392 1995-10-06

Publications (2)

Publication Number Publication Date
WO1997013206A1 WO1997013206A1 (en) 1997-04-10
WO1997013206B1 true WO1997013206B1 (en) 1997-05-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/015977 WO1997013206A1 (en) 1995-10-06 1996-10-04 Method and apparatus for controlling change propagation at run-time

Country Status (4)

Country Link
US (1) US5634056A (en)
EP (1) EP0870242A4 (en)
JP (1) JP2000509524A (en)
WO (1) WO1997013206A1 (en)

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