Exploring Differences in Exchange Formats - Tool Support
and Case Studies;
7th Europ. Conf. Software Maintenance and Reengineering
(CSMR 2003), 26-28 March 2003, Benevento, Italy,
IEEE Computer Society;
Abstract: XML-based markup languages are widely used, e.g., for
information exchange and as file formats in various software
development and exploration tools. Still, using a metalanguage,
such as XML, does not guarantee tool interoperability. The
particular XML-based languages used by different tools often vary.
They can, nonetheless, be processed by the same methods and tools.
In most UML-based software development tools, support for tool
interoperability is provided by using OMG s XML Metadata
Interchange (XMI)as a file format. However, in many cases XMI has
turned out to be insufficient for storing all information from the
UML models. Thus the tool vendors typically extend and/or modify
the language so introduce their own XMI dialect. This, in turn,
means that the tool interoperability is sacrified. In this paper
we discuss a method and a tool called DTD-compaper for exploring
differences in exchange formats. DTD-compaper can, in general, be
used to identify differences in grammars of XML-based languages.
Further, we discuss three different case studies in which we used
DTD-comparer. We first compare few commonly used XMI dialects. We
further use the tool for comparing different versions of the Graph
eXchange Language (GXL).