• Presented by: Saverio Giallorenzo
  • Advisor: Maurizio Gabbrielli
  • External Examiner: Gianluigi Zavattaro

Abstract

The main contribution of this master thesis work is the description, verification, and demonstration of the realisability in the Jolie language of Control-Flow and Resources Workflow Patterns — defined by the Workflow Patterns Initiative (WPI).

The thesis is divided into four chapters. The first chapter presents a general description of the programming paradigm behind the Jolie language, Service-Oriented Computing, and its main context of application, Business Process Automation (BPA). The presentation is mainly focussed on the principles of Service-Oriented Architectures (SOA) and ultimately describes the main methods concerning service composition — orchestration and choreography. The last section of the chapter considers SOC in a strictly industrial perspective, highlighting its strategic features.

The second chapter focuses on the description of Jolie. This chapter is not intended as a comprehensive description of the features in the language but rather gives an overview of the theoretical concepts, data structures, operators, and constructs of Jolie, used to demonstrate the realisability of the considered Workflow Patterns.

The third chapter contains the actual realisation of the considered Workflow Patterns in Jolie. Each pattern is first reported and explained in terms of Coloured Petri Nets, realised as a Jolie program (or architecture of programs), reporting the rationale behind the realisation.

The fourth chapter summarises the results from this thesis work, showing a comparison between Jolie and other BPA languages, as reported by WPI. The chapter also contains a discussion on future work: the completion of this study with an analysis on the remaining patterns from the WPI and their impact on the evolution of the Jolie language.