SeamlessMDD: Framework for Seamless Integration of Generated and Hand-Written Code

This paper presents SeamlessMDD - our open-source framework for a gradual and effortless transition from traditional development to MDD (Model-Driven Development) that allows maintaining hand-written and generated code intertwined without the need to adjust the web application architecture or the established way of work. We propose a novel workflow that is based on the following: (1) Incremental and iterative transformations derived from model versions comparison so that only code for affected model elements is generated or modified; (2) Integration of generated and hand-written code using API-based code generators, which operate on syntax trees of target programming languages; (3) Case-specific support for change propagation and conflict resolution (contrary to the VCS-based systems operating on the single line).