Price definition in the establishment of electronic contracts for web services
Felipe Gonçalves Marchione, Marcelo Fantinato, Maria Beatriz Felgar de Toledo, Itana Maria de Souza Gimenes · 2009
The large amount of information in electronic contracts hampers their establishment due to high complexity. An approach inspired in software product line and based on feature modeling was proposed to make this process more systematic through information reuse and structuring. To allow the coverage assessment of this and other similar approaches, this paper presents a set of requirements that should be met by an approach in order to obtain success in supporting the process of Web services negotiation and contracting. By assessing the feature-based approach in relation to the proposed requirements, it was showed that the approach does not allow the price of services and of quality of services (QoS) attributes to be considered in the negotiation and included in the electronic contract. Thus, this paper also presents an extension of such approach in which prices and price types associated to Web services and QoS levels are applied. An extended toolkit prototype is also presented as well as an experimentation example of the proposed approach.