An Approach to Evolving Legacy Software System into Cloud Computing Environment

2.1. Resource Oriented Software Evolution

In (Huang et al. 2003), various issues and challenges in web-based systems development and maintenance are described, especially in the public domain. Evolvable web-based system architecture is introduced for management systems, and some designs and implementation tradeoffs are discussed as well. (Stroulia et al. 2000) suggest applying conventional reverse engineering techniques, such as code analysis and clone detection, to reduce duplicated content and to maintain web-based systems. The developed system includes the HTML parser and analysers that separate content from layout by integrating into HTML pages scripts for retrieving the dynamic data from special database.

In (Tonella et al. 2003), the researchers propose a cluster method, which is based on the automatic extraction by the keywords in web pages. Lixto (Estievenart et al. 2003) is a wrapper generation tool that is well suitable for building HTML/XML wrappers. (Moreira et al. 2001) propose an approach to integrating WWW information, which is based on the development of a canonical domain model in XML and the wrapping of existing WWW applications with wrappers capable of communicating about entities in this common model with the applications and with an intermediary mediator.