CVSSearch is a tool that searches for fragments of source code by using CVS comments. CVS is a version control system that is widely used in the open source community [4]. Our search tool takes advantage of the fact that a CVS comment typically describes the lines of code involved in the commit and this description will typically hold for many future versions. In other words, CVSSearch allows o...

The ability to reproduce a program execution has many applications. Especially in software debugging, reproducing a failure is often time consuming if not impossible. Can we automate the task? The goal of this master project is to design and implement a framework to reproduce executions for Eiffel programs. The framework uses Capture/Replay, a technique to reproduce program executions by simula...

In this paper we describe a study whose goal is to answer the question: “Is exception handling a reusable aspect”? To this end, we have systematically attempted to reuse exception handling AspectJ aspects across seven different real applications, some of them from the same domain, some based on the same development platform. Our preliminary results indicate that, due to a number of reasons, int...

Most complex software projects are compiled using a build tool (e.g. make), which runs commands in an order satisfying userdefined dependencies. Unfortunately, most build tools require all dependencies to be specified before the build starts. This restriction makes many dependency patterns difficult to express, especially those involving files generated at build time. We show how to eliminate t...

A. WebEx Interface WebEx, a Web-based tool for interactive exploration of programming examples, was designed to overcome the problems listed above. A program example in WebEx appears to be just the same as it looked in a program editor (Figure 1). The only visible difference is the presence of green or white navigation bullets to the left of each line. A green bullet indicates the availability ...

Currently, POSTGRES is about 90,000 lines of code in C and is being used by assorted ‘‘bold and brave’’ early users. The system has been constructed by a team of 5 part time students led by a full time chief programmer over the last three years. During this period, we have made a large number of design and implementation choices. Moreover, in some areas we would do things quite differently if w...

In empirical comparisons of Aspect-Oriented (AO) to ObjectOriented (OO) systems, system properties such as understandability, maintainability, reusability, and testability have often been inferred from other metrics, such as lines of code, sites of change, and modularity. However, in traditional OO metrics suites such system properties are assessed separately from these measures. We applied OO ...

A lot of functionality is needed when an application, such as a museum cataloguing system, is extended with semantic capabilities, for example ontological indexing functionality or multi-facet search. To avoid duplicate work and to enable easy and cost-efficient integration of information systems with the Semantic Web, we propose a web widget approach. Here, data sources are combined with funct...

We have examined 365 versions of Linux. For every version, we counted the number of instances of common (global) coupling between each of the 17 kernel modules and all the other modules in that version of Linux. We found that the number of instances of common coupling grows exponentially with version number. This result is significant at the 99.99% level, and no additional variables are needed ...

Massive quantities of data are today collected from many sources. However, it is often labor-intensive to handle and integrate these data sources into a data warehouse. Further, the complexity is increased when specific requirements exist. One such new requirement, is the right to be forgottenwhere an organization upon request must delete all data about an individual. Another requirement is whe...