Section: Software

Jolie

Members of Focus have recently developed Jolie [7] (Java Orchestration Language Interpreter Engine, see http://www.jolie-lang.org/ ). Jolie is a service-oriented programming language. Jolie can be used to program services that interact over the Internet using different communication protocols. Differently from other Web Services programming languages such as WS-BPEL, Jolie is based on a user-friendly C/Java-like syntax (more readable than the verbose XML syntax of WS-BPEL) and, moreover, the language is equipped with a formal operational semantics. This language is used for the proof of concepts developed around Focus activities. For instance, contract theories can be exploited for checking the conformance of a Jolie program with respect to a given contract. A spin-off, called “Italiana Software”, has been launched around Jolie, its general aim is to transfer the expertise in formal methods for Web Services matured in the last few years onto Service Oriented Business Applications. The spin-off is a software producer and consulting company that offers service-oriented solutions (for instance, a “`single sign-on” application) based on the Jolie language.

In 2011 the development of Jolie has continued. The main activities have been:

• A new session message-routing mechanism, based on correlation sets has been implemented. This mechanism makes message routing programmable from inside Jolie code.

• a new primitive for (smart) service aggregation.

• a graphical editor.

• an integrated development environment.

Moreover, this year Jolie has been used for teaching, in a 30-hour master course at IT University of Copenhagen, Denmark.