![An example:
Code -> CFG (Control Flow Graph)->Sequence diagram
if (a.m1() || b.m2())
{
a.m3();
}
b.m4();
a.m3()
C1 = a.m1()
If (c1)
c2: b.m2()
If (c2)
b.m4()
Code CFG Sequence diagram
F
F
T
T
x:X a:A b:B
c1=m1()
m3()
c2=m2()
m3()
m4 ()
alt
[c1]
[c1]
opt
[c2]](https://image.slidesharecdn.com/rejuvenatingsoftwarenew-090430093339-phpapp01/85/Rejunevating-software-reengineering-processes-11-320.jpg)
![Session Based Testing: A Strategy for Game testing
Using existing tool
support
Code
(reengineered
system)
PIM (static +
behavior model)
UML - Class
Diagram
PSM (apply UML
extensions)
Algorithm [Olga Volgin et
al.]
Volgin Olga et al.
work continued …](https://image.slidesharecdn.com/rejuvenatingsoftwarenew-090430093339-phpapp01/85/Rejunevating-software-reengineering-processes-16-320.jpg)
![[1] Nierstrasz, Oscar and Demeyer, Serge. “Object-Oriented Reengineering
Patterns” 2004. Proceedings of the 26th International Conference on Software
Engineering (ICSE’04).
[2] Object Management Group; http://www.omg.org
[3] Model Driven Architecture; http://www.omg.org/mda
[4] Park, Wei-Jin; Min-Sang, Yoon; Bae, Doo-Hwan, and Mah, Pyeong-Soo. “Object–
Oriented Model Refinement Technique in Software Reengineering” IEEE Xplore.
[5] I. Jacobson and F. Lindstorm “Re-engineering of Old Systems to an Object-
oriented architecture” Proceedings of OOPSLA91, 1991, pp.77-83
[6] Gowthaman K., Mustafa K. and Khan R.A. “Reengineering Legacy Source Code
to Model Driven Architecture”. 2005. Proceedings of the Fourth Annual ACIS
International Conference on Computer and Information Science (ICIS’05)
[7] Green L., Bergey J., Lamia W., Smith D., “Proceedings of the First Annual
Software Engineering Techniques Workshop, May 1994: Software Reengineering”.
May 1994. pp. 1
References](https://image.slidesharecdn.com/rejuvenatingsoftwarenew-090430093339-phpapp01/85/Rejunevating-software-reengineering-processes-25-320.jpg)
![[8] L. Favre. “Formalizing MDA-based Reverse Engineering Processes”. IEEE
Sixth International Conference on Software Engineering Research, Management
and Applications. 2008.
[9] Rountev Atanas, Volgin Olga and Reddoch Meriam. “Static Control-Flow Analysis
for Reverse Engineering of UML Sequence Diagrams”. PASTE ‘05. 6th ACM
SIGPLAN-SIGSOFT Workshop on Program Analysis for Software Tools and
Engineering. 2005.
[10] B. Qiao, H.Yang, W. Chu and B. Xu,. “Bridging legacy systems to model
driven architecture”. In Proc. 27th Annual International Computer Aided Software
and Applications Conference. IEEE Press, 2003, pp. 304-309.
[11] http://www.suite101.com/article.cfm/reengineering/7669
Dr. Rosenberg. Linda H., “Software Re-engineering”
[12] Byrne, Eric J., "Software Reverse Engineering: A Case Study", Software-
Practice and Experience, 12/91.
[13] http://portal.acm.org/citation.cfm?id=1402527
Vinita, Jain Amita, Tayal Devendra K., “On reverse engineering an object-oriented
code into UML class diagrams incorporating extensible mechanisms”. ACM SIGSOFT
References](https://image.slidesharecdn.com/rejuvenatingsoftwarenew-090430093339-phpapp01/85/Rejunevating-software-reengineering-processes-26-320.jpg)
![Software Engineering Notes, Volume 33, Issue 5 (September 2008) , Article No. 9,
Year of Publication: 2008, ISSN:0163-5948
[14] Katsimpa, T., Panagis, Y., Sakkopoulos, E., Tzimas, G., Tsakalidis, A. (2006)
“Application Modelling using Reverse Engineering Techniques”. Proceedings
Symposium on Applied Computing (SAC’06), pp1250-1255.
[15] T. Philip, R. Ramsundar, “A Reengineering Framework for Small Scale Software”,
Software Engineering Notes , 20 (5), 1995, 51-55
[16] Tmothy C Lethbridge & Nicolas Anquetil, “Architecture of source code
Exploration Tool: A Software Engineering Case study”, SITE, University of Ottawa,
Canada, Technical report 1997-07.
[17] Bergey, J. K.; Smith, Dennis B.; & Weiderman, N. H. DoD, “Legacy System
Migration Guidelines”, (CMU/SEI-99-TN-013, ADA370621). Pittsburgh, PA: Software
Engineering Institute, Carnegie Mellon University, September 1999.
[18] JeanBezivin, Slimane Hammoudi, Denivaldo Lopes,Fr´ed´eric Jouault, “Applying
MDA Approach forWeb Service Platform”, Proceedings of the 8th IEEE Intl Enterprise
Distributed Object Computing Conf(EDOC 2004). 2004.
References](https://image.slidesharecdn.com/rejuvenatingsoftwarenew-090430093339-phpapp01/85/Rejunevating-software-reengineering-processes-27-320.jpg)
Rejunevating software reengineering processes
- 1. Rejuvenating software reengineeringRejuvenating software reengineering processes throughprocesses through Model Driven ArchitectureModel Driven Architecture
- 3. Model Driven Architecture OMG – Object Management Group An open membership and no-profitAn open membership and no-profit consortium.consortium. 1989: OMG founded 1991: CORBA 1.0, IDL 1996: CORBA 2.0 1997: UML, MOF, CWM 2001: MDA
- 4. MDA MetamodelMDA Metamodel MOF Other languages UML Metamodel PIM Mapping techniques PSM Mapping techniques PIM PSM <<expressed with>><<expressed with>> <<expressed with>><<expressed with>> <<expressed with>><<expressed with>> <<based on>><<based on>> <<based on>><<based on>> <<described with>><<described with>> <<described with>><<described with>> <<depends on>><<depends on>> <<independant of>><<independant of>> Infrastructure
- 5. Session Based Testing: A Strategy for Game testing Introduction | Game Development Cycle and Software Development Cycle Software Reengineering Software ReengineeringSoftware Reengineering • Software reengineering is the process of creating an abstract description of a system, reasoning about a change at a higher level of abstraction, and then re-implementing the system.
- 6. Review Design Extract structure and functionality information Extract data-flow and control flow information Generate documentation c c Program Information Detailed Design Information Recovered Design Information High-level Design Information New Documentation Software Reverse Engineering Process
- 7. Re-engineering without using MDA
- 8. On reverse engineering an object-oriented code into UML class diagrams incorporating extensible mechanisms by Vinita, Jain Amita, Tayal Devendra K The authors propose an algorithm to reverse engineer an object-oriented code into UML class diagram. The algorithm generates rules for a complete set of constructs available in UML class diagrams. It includes classes, relationships, objects, attributes, operations, inheritance, associations, interfaces & other extensible mechanisms also. This algorithm can be viewed as a solution to reverse engineer any available object-oriented software. Input : Object oriented code Output: UML class diagram.
- 9. An Example – Composition & Inheritance class Point { /*...*/ } class Circle { private: Point center; /*...*/ } Circle Point -center: Point 1 class Customer { protected: int custno; }; class Human_cust: public Customer { protected: char sex; char bdate; }; class Inst_cust: public Customer { protected: int noofemp; char orgtype; }; #noofemp: int #orgtype: char #sex: char #bdate: char Inst_custHuman_cust #cusNo: int Customer
- 10. Static Control-Flow Analysis for Reverse Engineering of UML Sequence Diagrams by Rountev Atanas, Volgin Olga and Reddoch Meriam The authors propose simple UML extensions that are necessary to capture general flow of control. An algorithm is proposed that maps a reducible exception free intra-procedural control-flow graph to UML Sequence diagram, using the proposed extensions. The 4 kinds of interaction fragments of particular importance are - An opt fragment describes optional behavior guarded by some condition. An alt fragment describes two or more mutually-exclusive alternatives in behavior. The sequence enclosed in a loop fragment is repeated until the guard condition becomes false. A break fragment represents a breaking. scenario: first the fragment sequence inside the break fragment is executed, and then the execution of the fragment enclosing the break completes immediately.
- 11. An example: Code -> CFG (Control Flow Graph)->Sequence diagram if (a.m1() || b.m2()) { a.m3(); } b.m4(); a.m3() C1 = a.m1() If (c1) c2: b.m2() If (c2) b.m4() Code CFG Sequence diagram F F T T x:X a:A b:B c1=m1() m3() c2=m2() m3() m4 () alt [c1] [c1] opt [c2]
- 12. Application Modelling using Reverse Engineering Techniques by Katsimpa, T., Panagis, Y., Sakkopoulos, E., Tzimas, G., Tsakalidis, A. The authors present a technique that enables effective reverse engineering procedures for web applications. This work shows a method that allows us to transform existing web applications developed with ASP.NET, into WebML models represented first with the appropriate graph DAG (Directed Acyclic Graph) to enable further meta-modeling.
- 13. Steps for Application modeling using reverse engineering .ASPX Analysis Data source analysis Final Application graph Labels WebML ASPX pages Text files .NET Web applicaition Correspondence Matrix DAG Tree
- 15. Session Based Testing: A Strategy for Game testing • In this work Olga Volgin et al. proposes – “An algorithm for mapping a reducible exception-free intraprocedural control-flow graph to UML.” • Extensions proposed by us – Combine static analysis (using available tool support) and behavioral analysis (as shown in Olga Volgin et al.) Static Control-Flow Analysis for Reverse Engineering of UML Sequence Diagrams by Rountev Atanas, Volgin Olga and Reddoch Meriam
- 16. Session Based Testing: A Strategy for Game testing Using existing tool support Code (reengineered system) PIM (static + behavior model) UML - Class Diagram PSM (apply UML extensions) Algorithm [Olga Volgin et al.] Volgin Olga et al. work continued …
- 17. Session Based Testing: A Strategy for Game testing • In this work L. Favre proposes – “… proposes a MDA technique to model static and dynamic behavior from a migrated object oriented code..” “Formalizing MDA-based Reverse Engineering Processes”. by L. Favre. Parser Metamodel Extractor Reverse Engineering Data Flow Analysis ISM code AST DFG / patterns PIM code PSM code
- 18. Session Based Testing: A Strategy for Game testing Static and dynamic analysis Static and dynamic analysis formalizes Legacy source code L. Favre work continued …
- 19. Session Based Testing: A Strategy for Game testing • B.Qiao et al. propose use RWSL {Re- engineering Wide Spectrum Language} to recover the architecture of a legacy system. “…The full support for reverse engineering guarantees the correctness of following evolution phases, i.e., integration with MDA, model establishment and implementation.” Bridging legacy systems to model driven architecture by B. Qiao, H.Yang, W. Chu and B. Xu
- 20. Session Based Testing: A Strategy for Game testing HTML etc. XMI DOC / DTD UML profile for RWSL PSM (UML) PIM (UML) New Features Initial Architecture in RWSL Components / Connectors Code in RWSL (CSL / COOL) Existing / Legacy Systems Decomposition ImplementationSADL2UML Translation Transfer Configuration IntegrationXSLT UML2XMI Transform Addition Abstraction Restructuring B. Qiao et al. work continued … MDA Models
- 21. Observations Tool support exists to re-engineer software systems without MDA; however the tools fail to provide design models of the application. Language translators often generate poorly structured code, cryptic variable names and non-optimal data structures. Mapping platform services from source to target environment has always been a manual task as this is difficult to automate. However, using formalizing MDA approach we can automate the mapping of platform services during re-engineering.
- 22. As new technology arrives at a fast rate, old technologies do not disappear, but are concentrated in the legacy software. As a consequence the evolution problem is augmented by a heterogeneity problem. The middleware landscape has continually shifted and evolved e.g. CORBA, .NET, EJB, XML/SOAP. Further, there is no one winner or a de facto standard available to develop software systems. Hence, the re-engineering approach which provides an implementation independent model will be advantageous. Observations
- 23. This study at present does not provide any empirical results on reengineering a legacy system with or without MDA. As future work we aim to test our observation of reengineering a legacy system with MDA using available tool support. Future Work
- 24. “…The most interesting and challenging side of software engineering may not be building brand new software systems, but rejuvenating existing ones.” - Oscar Nierstrasz et al.
- 25. [1] Nierstrasz, Oscar and Demeyer, Serge. “Object-Oriented Reengineering Patterns” 2004. Proceedings of the 26th International Conference on Software Engineering (ICSE’04). [2] Object Management Group; http://www.omg.org [3] Model Driven Architecture; http://www.omg.org/mda [4] Park, Wei-Jin; Min-Sang, Yoon; Bae, Doo-Hwan, and Mah, Pyeong-Soo. “Object– Oriented Model Refinement Technique in Software Reengineering” IEEE Xplore. [5] I. Jacobson and F. Lindstorm “Re-engineering of Old Systems to an Object- oriented architecture” Proceedings of OOPSLA91, 1991, pp.77-83 [6] Gowthaman K., Mustafa K. and Khan R.A. “Reengineering Legacy Source Code to Model Driven Architecture”. 2005. Proceedings of the Fourth Annual ACIS International Conference on Computer and Information Science (ICIS’05) [7] Green L., Bergey J., Lamia W., Smith D., “Proceedings of the First Annual Software Engineering Techniques Workshop, May 1994: Software Reengineering”. May 1994. pp. 1 References
- 26. [8] L. Favre. “Formalizing MDA-based Reverse Engineering Processes”. IEEE Sixth International Conference on Software Engineering Research, Management and Applications. 2008. [9] Rountev Atanas, Volgin Olga and Reddoch Meriam. “Static Control-Flow Analysis for Reverse Engineering of UML Sequence Diagrams”. PASTE ‘05. 6th ACM SIGPLAN-SIGSOFT Workshop on Program Analysis for Software Tools and Engineering. 2005. [10] B. Qiao, H.Yang, W. Chu and B. Xu,. “Bridging legacy systems to model driven architecture”. In Proc. 27th Annual International Computer Aided Software and Applications Conference. IEEE Press, 2003, pp. 304-309. [11] http://www.suite101.com/article.cfm/reengineering/7669 Dr. Rosenberg. Linda H., “Software Re-engineering” [12] Byrne, Eric J., "Software Reverse Engineering: A Case Study", Software- Practice and Experience, 12/91. [13] http://portal.acm.org/citation.cfm?id=1402527 Vinita, Jain Amita, Tayal Devendra K., “On reverse engineering an object-oriented code into UML class diagrams incorporating extensible mechanisms”. ACM SIGSOFT References
- 27. Software Engineering Notes, Volume 33, Issue 5 (September 2008) , Article No. 9, Year of Publication: 2008, ISSN:0163-5948 [14] Katsimpa, T., Panagis, Y., Sakkopoulos, E., Tzimas, G., Tsakalidis, A. (2006) “Application Modelling using Reverse Engineering Techniques”. Proceedings Symposium on Applied Computing (SAC’06), pp1250-1255. [15] T. Philip, R. Ramsundar, “A Reengineering Framework for Small Scale Software”, Software Engineering Notes , 20 (5), 1995, 51-55 [16] Tmothy C Lethbridge & Nicolas Anquetil, “Architecture of source code Exploration Tool: A Software Engineering Case study”, SITE, University of Ottawa, Canada, Technical report 1997-07. [17] Bergey, J. K.; Smith, Dennis B.; & Weiderman, N. H. DoD, “Legacy System Migration Guidelines”, (CMU/SEI-99-TN-013, ADA370621). Pittsburgh, PA: Software Engineering Institute, Carnegie Mellon University, September 1999. [18] JeanBezivin, Slimane Hammoudi, Denivaldo Lopes,Fr´ed´eric Jouault, “Applying MDA Approach forWeb Service Platform”, Proceedings of the 8th IEEE Intl Enterprise Distributed Object Computing Conf(EDOC 2004). 2004. References