Round-Trip Modeling Using OPM/PL

In this work we present OPM/PL, a suite of modeling tools based on the Object-Process Methodology (OPM) and implemented in Prolog. OPM/PL includes tools for model authoring, querying and visualization, as well as code parsing and code generation. OPM/PL aims at integrating the information from the source code, models and requirements of a software project into a single database with a uniform format. This approach extends the role of a modeling tool to include a representation of the code and its relations to the model. The OPM/PL database contains both model elements and information from code parsing. This combined representation allows developers to flesh out a model from existing code, and update the code according changes in the model. Thus, OPM/PL provides a system for round-trip modeling.