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Design error and reusabilty

Published: 01 June 2007 Publication History

Abstract

Failure to account for the placement of components of a complex system on different servers leads to problems in reusability. We examine a case involving an Enterprise JavaBean (EJB) application using Java 2 Platform, Enterprise Edition (J2EE). In creating an EJB entity bean class to represent persistent data, the designer assumed that all EJB client objects would be local. Attempts by developers, whose programs were on another server, to create an entity bean object, failed. Lack of documentation by the original designer and lack of training in use of entity beans led to long delays in construction of new applications.

References

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Artiges, Mark, Gurpreet Singh Bhasin, Bernard Ciconte, Malcolm Garland, Saranathan Govindarajan, James Huang, Subramanian Kovilmadam, Kunal Mittal, Paul J. Perrone, Tom Schwenk, BEA WebLogic Server 8.1 Unleashed. SAMS, Indianapolis, IN, 2003.
[2]
Aston, Philip, "To Begin at the Beginning, JNDI Initial Contexts: A primary step in J2EE programs" in Dev2Dev, 01/23/2004. <http://dev2dev.bea.com/pub/a/2004/01/142.html> (Dec 3, 2006)
[3]
Crawford, William & Jonathan Kaplan, J2EE Design Patterns. O'Reilly Media Inc, Sebastopol, CA, 2003.
[4]
Gamma, Eric, Richard Helm, Ralph Johnson and John Vlissides, Design Patterns: Elements of Reusable Object-Oriented Software. Addison-Wesley, New York, NY, 1995.
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Mills, Duncan "J2EE Patterns: Understanding MVC" ODTUG Technical Journal, June 2003 <http://www.oracle.com/technology/oramag/webcolumns/2003/techarticles/mills_mvc.html> (Nov 26, 2006).
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Wutka, Mark, "JNDI---Java Naming and Directory Interface" Special Edition: Using Java 2 Enterprise Edition. Que Publishing, April 5, 2002. <http://www.informit.com/articles/article.asp?p=26231&seqNum=1&rl=1>&rl=1>>(Dec 3, 2006)

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Information & Contributors

Information

Published In

cover image ACM SIGCSE Bulletin
ACM SIGCSE Bulletin  Volume 39, Issue 2
June 2007
158 pages
ISSN:0097-8418
DOI:10.1145/1272848
Issue’s Table of Contents

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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 01 June 2007
Published in SIGCSE Volume 39, Issue 2

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Author Tags

  1. design patterns
  2. human error
  3. reusability

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