- From: Roberto Lucchi <lucchi@cs.unibo.it>
- Date: Tue, 13 Sep 2005 12:31:19 +0200 (CEST)
- To: public-ws-chor@w3.org
- Cc: Claudio Guidi <cguidi@cs.unibo.it>
Dear all, I would like to point out that a paper which deals with choreography languages and in particular on the interaction patterns when alignment property is considered has been published in the proceeding of 2nd International Workshop on Web Services and Formal Methods WS-FM'05, LNCS 3670. Here we report the abstract, we hope this can help and stimulate the discussion about the right interaction patterns that should be used at the choreography level. Abstract: Choreography languages provide a top-view design way for describing complex systems composed of services distributed over the network. The basic building block of such languages is the interaction between two peers which are of two kinds: request and request-respond. WS-CDL, which is the most representative choreography language, supports a pattern for programming the request interaction and two patterns for the request-respond one. Furthermore, it allows to specify if an interaction is aligned or not whose meaning is related to the possibility to control when the interaction completes. In this paper we reason about interaction patterns by analyzing their adequacy when considering the fact that they have to support the alignment property. We show the inadequacy of the two patterns supporting the request-respond interaction; one of them because it does not permit to reason on alignment at the right granularity level and the other one for some expressiveness lacks. The paper is also available at the following URL: http://www.cs.unibo.it/~lucchi/pubbl.html Best regards, Roberto
Received on Tuesday, 13 September 2005 10:31:32 UTC