Search

Web 2.0 phenomenon, REST services and growing mobile service consumption, among other factors, are leading the development of web applications to a new paradigm, named cross-device web application. Those web sites let organizations of all sizes provide a pervasive and contextual access to their information and services, to customers, employees and partners via potentially any kind of device. Most organizations often possess legacy systems that should face an ongoing evolution process to enhance its accessibility and interoperability. Yesterday they had to evolve to provide the user with a Web layer, and now they should evolve again to adapt to the new ways of data and services consumption on the Web. In such scenario, REST services play a key role, defining the interaction layer between the legacy system and all its heterogeneous front ends. This work presents a model-driven approach to derive a REST service layer from a legacy web application within the frame defined by a modernization process. This approach departs from a conceptual model of the legacy application generated by reverse engineering techniques. In this work we detail the generation process and provide a sample implementation instrumenting one of the studied web development frameworks to evaluate the suitability of the approach.

Web applications are evolving towards an inter-organizational environment where new requirements arise (application integration by means of the composition of different enterprise business processes) and where these requirements need to be faced within the application development process. In this work we propose an extension to the OOWS Web Engineering method for the development of Web applications based on business processes. In this extension we have taken into account both the existence of manual tasks carried out by human participants and the fact that processes within a B2B context usually involve the use of distributed functionality, which is normally provided by means of Web Services. Moreover, the use of model transformation techniques (such as the standard QVT) allows us to obtain from business process specifications both (1) the graphical user interfaces that allow the execution of these processes and (2) the executable specification of the process defined in WS-BPEL.

The navigational model, in many methods for hypermedia development, is built based on the structural elements. The dynamic aspects that affect the navigation are not taken in account, although some recent approaches include these dynamic aspects after the generation of a navigational model based on the data structures. In this work we show how to obtain navigational models from process models, as a result the navigational model are more realistic. The method follows a model driven and object oriented approach, for the definition of model transformations. The transformations between the elements in the process model and the navigational model are given. Finally, the applications of that rules are shown through an example.

In this paper we present an aspect-oriented approach to define the navigational concern of Web business processes. Web business processes introduce important modifications into the navigational space and structure of e-commerce applications. From an aspect-oriented perspective, Web business processes are crosscutting concerns, whose elements are scattered and tangled with the rest of navigational elements of e-commerce systems. Web business process modeling lacks modularity, decreasing the system comprehensibility and adaptability. In this paper, we present an aspect-oriented approach to model reusable Web business process. This paper also states Web engineering approaches must be aware of the concepts and techniques introduced by the Aspect Oriented community.