|Title||The JOpera visual composition language|
|Publication Type||Journal Article|
|Year of Publication||2005|
|Authors||Pautasso, C., and G. Alonso|
|Journal||J. Vis. Lang. Comput.|
|Keywords||data flow, JOpera, visual composition languages, Web service composition, Web services|
Composing Web services into a coherent application can be a tedious and error-prone task when using traditional textual scripting languages or emerging XML-based approaches. As an alternative, complex interactions patterns and data exchanges between different Web services can be effectively modeled using a visual language. In this paper, we discuss the requirements of such an application scenario and we fully describe the JOpera Visual Composition Language. An extensive set of visual editing tools, a compiler and a debugger for the language have been implemented as part of the JOpera system with the goal of providing a true visual environment for Web service composition with usability features emphasizing rapid development and visual scalability.
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