CREOLE: a Universal Language for Creating, Requesting, Updating and Deleting Resources

Mayleen Lacouture
(ASCOLA Research Team (Mines de Nantes-INRIA, LINA) - Ecole des Mines de Nantes, France)
Hervé Grall
(ASCOLA Research Team (Mines de Nantes-INRIA, LINA) - Ecole des Mines de Nantes, France)
Thomas Ledoux
(ASCOLA Research Team (Mines de Nantes-INRIA, LINA) - INRIA Rennes-Bretagne Atlantique, France)

In the context of Service-Oriented Computing, applications can be developed following the REST (Representation State Transfer) architectural style. This style corresponds to a resource-oriented model, where resources are manipulated via CRUD (Create, Request, Update, Delete) interfaces. The diversity of CRUD languages due to the absence of a standard leads to composition problems related to adaptation, integration and coordination of services. To overcome these problems, we propose a pivot architecture built around a universal language to manipulate resources, called CREOLE, a CRUD Language for Resource Edition. In this architecture, scripts written in existing CRUD languages, like SQL, are compiled into Creole and then executed over different CRUD interfaces. After stating the requirements for a universal language for manipulating resources, we formally describe the language and informally motivate its definition with respect to the requirements. We then concretely show how the architecture solves adaptation, integration and coordination problems in the case of photo management in Flickr and Picasa, two well-known service-oriented applications. Finally, we propose a roadmap for future work.

In MohammadReza Mousavi and Gwen Salaün: Proceedings Ninth International Workshop on the Foundations of Coordination Languages and Software Architectures (FOCLASA 2010), Paris, France, 4th September 2010, Electronic Proceedings in Theoretical Computer Science 30, pp. 16–30.
Published: 28th July 2010.

ArXived at: bibtex PDF

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