JOpera: a Toolkit for Efficient Visual Composition of Web Services (2003)
| Venue: | International Journal of Electronic Commerce (IJEC |
| Citations: | 13 - 6 self |
BibTeX
@TECHREPORT{Pautasso03jopera:a,
author = {Cesare Pautasso and Gustavo Alonso},
title = {JOpera: a Toolkit for Efficient Visual Composition of Web Services},
institution = {International Journal of Electronic Commerce (IJEC},
year = {2003}
}
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Abstract
Web services are increasingly attracting attention for their ability to pro-vide standard interfaces to heterogeneous distributed services. Through these standard interfaces, it is possible to compose more complex services out of basic ones. In this paper, we tackle the problem of visual service compo-sition and the efficient and scalable execution of the resulting composite services. Our efforts revolve around the JOpera system, which combines a visual programming environment for Web services with a flexible execution engine capable of interacting with Web services through the SOAP protocol, described with WSDL, and registered with an UDDI registry. In the paper we describe the syntax of the JOpera Visual Composition Language (JVCL), its implementation, and how to provide different QoS levels in the execution of composite services.
