Abstract
Due to the simplicity, attractiveness and effectiveness for collaborative authoring and knowledge management, wikis are now massively disseminated and used in different domains. This workshop focuses on wikis for the specific domain of software engineering. It aims at bringing together researchers, practitioners, and enthusiasts interested on researching, exploring and learning how wikis can be improved, customized and used to better support software engineering. Based on lessons learned and obstacles identified, a research agenda will be defined with key opportunities and challenges. This edition at WikiSym'2009 follows others at ICSE'2009, WikiSym'2008 and WikiSym'2007. Copyright © 2009 ACM.

Abstract
This paper presents an approach to analyse the application of tactics in architectural patterns. We define and illustrate the approach using ARCHERY, a language for specifying, analysing and verifying architectural patterns. The approach consists of characterising the design principles of an architectural pattern as constraints, expressed in the language, and then, establishing a refinement relation based on their satisfaction. The application of tactics preserving refinement ensures that the original design principles, expressed themselves as constraints, still hold in the resulting architectural pattern. The paper focuses on fault-tolerance tactics, and identifies a set of requirements for a semantic framework characterising them. The application of tactics represented as model transformations is then discussed and illustrated using two case studies.

Abstract
Even if we have recognized many short-term benefits of agile methods, we still know very little about their long-term effects. In this panel, we discuss the long-term perspective of the agile methods. The panelists are either industrial or academic representatives. They will discuss problems and benefits related to the long-term lifecycle system management in agile projects. Ideally, the panel's outcome will provide ideas for future research.

Abstract
Aspect Oriented Programming (AOP) is a powerful programming technique with the objective of improving modularity by encapsulating crosscutting concerns. The nature of AOP makes it prone to unexpected and harmful interactions between the different components of a system. The claim behind this PhD is that unit tests can be used to detect these interactions. In this paper we explain how these can be accomplished. A brief state of the art, work plan and a support tool (drUID) are also presented.

Abstract
Knowledge plays a key role in software development, and the effectiveness of how it is captured into artifacts, and acquired by other team members, is of crucial importance to a project's success. The life-cycle of knowledge in software development is derived from the adopted artifacts, practices and tools. These axes are here reviewed from a knowledge capture and acquisition perspective, and several open research issues are identified. The present work is being carried out in the context of the author's doctoral research. The research objectives are derived from the presented open issues, and a research strategy is outlined. Some preliminary results are also presented.

Abstract
Software development is a social activity. Teams of developers join together to coordinate their efforts to produce software systems. This effort encompasses the development of a shared understanding surrounding multiple artifacts throughout the process. Frameworks are a powerful technique for large-scale reuse, but its complexity makes them hard to understand and learn how to use. Developers resort to their colleagues for help and insight, at the expense of time and intrusion, as documentation is often outdated and incomplete. This paper presents an approach to harness this collective knowledge of the team through a collaborative environment. Teams can share, rank and recommend their learning knowledge without too much intrusion and follow best practices of framework understanding.