A Formal Framework for Web Services Coordination
| Autor: | Manuel Mazzara, Claudio Guidi, Roberto Lucchi |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
long-running transactions
medicine.medical_specialty coordination General Computer Science business.industry Computer science computer.internet_protocol Business process Web application security computer.software_genre Theoretical Computer Science Choreography Business Process Execution Language World Wide Web π-calculus Web Services medicine Web service business WS-Policy computer Event calculus Web modeling event notification Computer Science(all) |
| Zdroj: | Electronic Notes in Theoretical Computer Science. 180:55-70 |
| ISSN: | 1571-0661 |
| Popis: | Recently the term Web Services Choreography has been introduced to address some issues related to Web Services Composition and Coordination. Several proposals for describing Choreography for Business Processes have been presented in the last years and many of these languages (e.g. BPEL4WS) make use of concepts as long-running transactions and compensations for coping with error handling. However, the complexity of BPEL4WS makes it difficult to formally define this framework, thus limiting the formal reasoning about the designed applications. In this paper, we formally address Web Services Coordination with particular attention to Web transactions. We enhance our past work - the Event Calculus - introducing two main novelties: i) a multicast event notification mechanism, and ii) event scope names binding. The former enables an easier specification of complex coordination scenarios — such as E-commerce applications require — while the latter allows many new interesting behaviors which can be very useful in business scenarios: the introduction of private event scope names — used to deal with security and privacy — and a dynamic event scopes definition that can be used to manage multiple instances of the same application. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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