Industrial experience with building a web portal product line using a lightweight, reactive approach

ABSTRACT

Imprecise, frequently changing requirements and short time-to-market create challenges for application of conventional software methods in Web Portal engineering. To address these challenges, ST Electronics (Info-Software Systems) Pte. Ltd. applied a lightweight, reactive approach to support a Web Portal product line. Unique characteristics of the approach were fast, low-cost migration from a single conventional Web Portal towards a reusable "generic Web Portal" solution, effective handling of large number of functional variants and their dependencies, the ability to rapidly develop new Web Portals from the generic one, and to independently evolve multiple Web Portals without ever losing a connection between them and the "generic Web Portal". The initial Web Portal was built using state-of-the-art conventional methods. The Web Portal was not flexible enough to reap the benefits of new business opportunities that required the company to rapidly develop and further maintain many similar Web Portals. To overcome the limitations of the conventional solution, a reuse technique called XVCL was applied incrementally. Over a period of three weeks, the conventional solution was converted into a Web architecture capable of handling nine Web Portals from a base of code smaller than the original Web Portal. In the paper, we describe the process that led to building the above Web Portal product line. We explain the difficulties in building an effective generic Web solution using conventional techniques. We analyze our reuse-based solution in qualitative and quantitative ways.

REFERENCES

• 1: Active Server Pages - ASP, http://msdn.microsoft.com/library/default.asp?url=/nhp/default.asp?contentid=28000522
• 2: Lerina Aversano , Gerardo Canfora , Andrea de Lucia , Pierpaolo Gallucci, Web Site Reuse: Cloning and Adapting, Proceedings of the 3rd International Workshop on Web Site Evolution (WSE'01), p.107, November 10-December 10, 2001
• 3: Hamid Abdul Basit , Damith C. Rajapakse , Stan Jarzabek, Beyond templates: a study of clones in the STL and some general implications, Proceedings of the 27th international conference on Software engineering, May 15-21, 2005, St. Louis, MO, USA [doi>10.1145/1062455.1062537]
• 4: Paul G. Bassett, Framing software reuse: lessons from the real world, Prentice-Hall, Inc., Upper Saddle River, NJ, 1996
• 5: BigLever Software Inc. www.biglever.com
• 6: Jan Bosch, Design and use of software architectures: adopting and evolving a product-line approach, ACM Press/Addison-Wesley Publishing Co., New York, NY, 2000
• 7: Rafael Capilla , Juan C. Dueñas, Light-Weight Product-Lines for Evolution and Maintenance of Web Sites, Proceedings of the Seventh European Conference on Software Maintenance and Reengineering, p.53, March 26-28, 2003
• 8: Ivica Crnkovic , Per Willför, Change Measurements in an SCM Process, Proceedings of the SCM-8 Symposium on System Configuration Management, p.26-32, July 20-21, 1998
• 9: System Configuration Management SCM-8 proceedings, Brussels, Belgium. January 1998.
• 10: Clements, P. and Northrop, L. Software Product Lines: Practices and Patterns, Addison-Wesley, 2002.
• 11: James R. Cordy, Comprehending Reality " Practical Barriers to Industrial Adoption of Software Maintenance Automation, Proceedings of the 11th IEEE International Workshop on Program Comprehension, p.196, May 10-11, 2003
• 12: Krzysztof Czarnecki , Ulrich W. Eisenecker, Generative programming: methods, tools, and applications, ACM Press/Addison-Wesley Publishing Co., New York, NY, 2000
• 13: Deelstra, S., Sinnema, M. and Bosch, J. "Experiences in Software Product Families: Problems and Issues during Product Derivation," Proc. Software Product Lines Conference, SPLC3, Boston, Aug. 2004, LNCS 3154, Springer-Verlag, pp. 165--182.
• 14: Erich Gamma , Richard Helm , Ralph Johnson , John Vlissides, Design patterns: elements of reusable object-oriented software, Addison-Wesley Longman Publishing Co., Inc., Boston, MA, 1995
• 15: Athula Ginige , San Murugesan, Guest Editors' Introduction: Web Engineering— An Introduction, IEEE MultiMedia, v.8 n.1, p.14-18, January 2001 [doi>10.1109/93.923949]
• 16: Athula Ginige , San Murugesan, Guest Editors' Introduction: The Essence of Web Engineering— Managing the Diversity and Complexity of Web Application Development, IEEE MultiMedia, v.8 n.2, p.22-25, April 2001 [doi>10.1109/MMUL.2001.917968]
• 17: Stan Jarzabek , Li Shubiao, Eliminating redundancies with a "composition with adaptation" meta-programming technique, Proceedings of the 9th European software engineering conference held jointly with 11th ACM SIGSOFT international symposium on Foundations of software engineering, September 01-05, 2003, Helsinki, Finland
• 18: Filippo Lanubile , Teresa Mallardo, Finding Function Clones in Web Applications, Proceedings of the Seventh European Conference on Software Maintenance and Reengineering, p.379, March 26-28, 2003
• 19: Krueger, C. "Eliminating the Adoption Barrier," Point-Counter Point Column, in IEEE Software, special issue on Initiating Software Product Lines, July/August 2002, pages 28--31.
• 20: Krueger, C. "Salion's Experience with a Reactive Software Product Line Approach," 5th Int. Workshop Product Family Engineering PFE5, 2003, LNCS 3014, Springer-Verlag, pp. 317--322.
• 21: Carma McClure, CASE is software automation, Prentice-Hall, Inc., Upper Saddle River, NJ, 1988
• 22: Personal Web Portal, http://www.ulfpettersson.com/
• 23: PHP: http://www.php.net/
• 24: Roger S. Pressman , Ted Lewis , Ben Adida , Ellen Ullman , Tom DeMarco , Thomas Gilb , Brent Gorda , Watts Humphrey , Ray Johnson, Can Internet-Based Applications Be Engineered?, IEEE Software, v.15 n.5, p.104-110, September 1998 [doi>10.1109/MS.1998.714869]
• 25: Prieto-Diaz, R. "Domain analysis for reusability," Proc. COMPSAC'87, October 1987, Tokyo, Japan, pp. 23--29.
• 26: Damith C. Rajapakse , Stan Jarzabek, An investigation of cloning in web applications, Special interest tracks and posters of the 14th international conference on World Wide Web, May 10-14, 2005, Chiba, Japan [doi>10.1145/1062745.1062800]
• 27: Gustavo Rossi , Daniel Schwabe , Fernando Lyardet, Abstraction and Reuse Mechanisms in Web Application Models, Proceedings of the Workshops on Conceptual Modeling Approaches for E-Business and The World Wide Web and Conceptual Modeling: Conceptual Modeling for E-Business and the Web, p.76-88, October 09-12, 2000
• 28: Daniel Schwabe , Luiselena Esmeraldo , Gustavo Rossi , Fernando Lyardet, Engineering Web Applications for Reuse, IEEE MultiMedia, v.8 n.1, p.20-31, January 2001 [doi>10.1109/93.923950 ]
• 29: Wong, K., "Toward Reusable and Evolvable Web Sites," Proc. 1st Annual Workshop on Web Site Evolution, (WSE'99), pp. 49--52.
• 30: Tak Wong , Stan Jarzabek , Soe Myat Swe , Ru Shen , Hongyu Zhang, XML implementation of frame processor, Proceedings of the 2001 symposium on Software reusability: putting software reuse in context, p.164-172, May 2001, Toronto, Ontario, Canada
• 31: Zhang, H. and Jarzabek, S., "An XVCL-based Approach to Software Product Line Development", Proc. 15th Int. Conf. on Software Engineering and Knowledge Engineering (SEKE'03), San Francisco, USA, 1--3 July, 2003.
• 32: XVCL (XML-based Variant Configuration Language) method and tool for managing software changes during evolution and reuse, http://fxvcl.sourceforge.net

INDEX TERMS

Primary Classification:
  D. Software
  D.2 SOFTWARE ENGINEERING
      D.2.2 Design Tools and Techniques

Additional Classification:
  D. Software
  D.1 PROGRAMMING TECHNIQUES
      D.1.2 Automatic Programming
  D.2 SOFTWARE ENGINEERING
        D.2.13 Reusable Software
            Subjects: Domain engineering
      D.2.2 Design Tools and Techniques

General Terms:
Design, Experimentation, Languages

Keywords:
maintenance, program synthesis, reuse, software product lines, static meta-programming, web engineering