PASS Middleware for Distributed and Autonomous XML Message Processing

Basic message processing tasks, such as well-formedness checking and grammar validation, can be off-loaded from the service providers´ own infrastructures. To enable effective off-loading of processing tasks, we introduce the Prefix Automata SyStem - PASS, a middleware architecture which distributively processes XML payloads of Web service SOAP messages during their routing towards Web servers. PASS is based on a network of automata, where PASS-nodes independently but cooperatively process parts of the SOAP message XML payload.