Model-based Mining of Source Code Repositories

Abstract. The Mining Software Repositories (MSR) field analyzes the rich data available in source code repositories (SCR) to uncover interest-ing and actionable information about software system evolution. Major obstacles in MSR are the heterogeneity of software projects and the amount of data that is processed. Model-driven software engineering (MDSE) can deal with heterogeneity by abstraction as its core strength, but only recent efforts in adopting NoSQL-databases for persisting and processing very large models made MDSE a feasible approach for MSR. This paper is a work in progress report on srcrepo: a model-based MSR system. Srcrepo uses the NoSQL-based EMF-model persistence layer EMF-Fragments and Eclipse’s MoDisco reverse engineering framework to create EMF-models of whole SCRs that comprise all code of all re-visions at an abstract syntax tree (AST) level. An OCL-like language is used as an accessible way to finally gather information such as software metrics from these SCR models.