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ECOWS
2006
Springer

Design Patterns for Wrapping Similar Legacy Systems with Common Service Interfaces

13 years 7 months ago
Design Patterns for Wrapping Similar Legacy Systems with Common Service Interfaces
Web Services are increasingly being used to create a wide range of distributed systems, many of which involve legacy software. Developing service interfaces for these legacy systems can be difficult, as for interoperability reasons it is advantageous to use a common service interface that is independent of the particular legacy system behind it. This enables other services to interoperate with like legacy systems regardless of their implementation. Unfortunately, similar legacy systems can offer subtly different functionality from each other, making agreeing on a common interface difficult. This paper introduces three design patterns for managing this problem: Lowest Common Denominator, Most Popular and Negotiated Interfaces. It formally presents these patterns and reflects on how they have been used within the domain of e-learning to wrap legacy systems that function as databases of objective questions.
David E. Millard, Yvonne Margaret Howard, Swapna C
Added 22 Aug 2010
Updated 22 Aug 2010
Type Conference
Year 2006
Where ECOWS
Authors David E. Millard, Yvonne Margaret Howard, Swapna Chennupati, Hugh C. Davis, Ehtesham-Rasheed Jam, Lester Gilbert, Gary B. Wills
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