From Theory to Practice in Transactional Composition of Web Services

We address the problem of composing Web Services in long-running transactional business processes, where compensations must be dealt with appropriately. The framework presented in this paper is a Java API called Java Transactional Web Services (JTWS), which provides suitable primitives for wrapping and invoking Web Services as activities in long-running transactions. JTWS adheres to a process calculi formalisation of long-running transactions, called Na¨ıve Sagas, which fixes unambiguously the implemented compensation policy. In particular, the primitives provided by JTWS are in one-to-one correspondence primitives of Sagas, and they are abstract enough to hide the complex details of their realization, thus favouring usability. Moreover, JTWS orchestrates business processes in a distributed way.

• Type: Conference
• Year: 2005
• Where: EPEW
• Authors: Roberto Bruni, Gian Luigi Ferrari, Hernán C. Melgratti, Ugo Montanari, Daniele Strollo, Emilio Tuosto
• Keywords: EPEW 2005, Long-running Transactional Business, Long-running Transactions, Web Services