Transformation: The Missing Link of MDA
ICGT '02 Proceedings of the First International Conference on Graph Transformation
Feature-based survey of model transformation approaches
IBM Systems Journal - Model-driven software development
ATL: A model transformation tool
Science of Computer Programming
Model Synchronisation: Definitions for Round-Trip Engineering
ICMT '08 Proceedings of the 1st international conference on Theory and Practice of Model Transformations
Towards Model Round-Trip Engineering: An Abductive Approach
ICMT '09 Proceedings of the 2nd International Conference on Theory and Practice of Model Transformations
Supporting Parallel Updates with Bidirectional Model Transformations
ICMT '09 Proceedings of the 2nd International Conference on Theory and Practice of Model Transformations
Bidirectional Transformations: A Cross-Discipline Perspective
ICMT '09 Proceedings of the 2nd International Conference on Theory and Practice of Model Transformations
Refinement via Consistency Checking in MDA
Electronic Notes in Theoretical Computer Science (ENTCS)
A Taxonomy of Model Transformation
Electronic Notes in Theoretical Computer Science (ENTCS)
JTL: a bidirectional and change propagating transformation language
SLE'10 Proceedings of the Third international conference on Software language engineering
Dagstuhl seminar on bidirectional transformations (BX)
ACM SIGMOD Record
A Formal Framework for Retainment Patterns for Trace-Based Model Transformations
SEAA '11 Proceedings of the 2011 37th EUROMICRO Conference on Software Engineering and Advanced Applications
Incremental model transformation for the evolution of model-driven systems
MoDELS'06 Proceedings of the 9th international conference on Model Driven Engineering Languages and Systems
GRoundTram: An integrated framework for developing well-behaved bidirectional model transformations
ASE '11 Proceedings of the 2011 26th IEEE/ACM International Conference on Automated Software Engineering
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Context: Model-to-model (M2M) transformations play an important role within model-driven development. Modern M2M approaches support incremental updates to the target model according to changes in the source model(s). Bidirectional transformation approaches even allow to incrementally translate target model changes back to the source model. Objective: A model transformation's target model may need to be refined later on either manually or automatically. Therefore, modellers may want to specify that target model changes are not overwritten if the original transformation is re-executed. There is currently only weak support for this kind of retainment by transformation engines. Method: In many transformation engines a transformation trace is available which keeps record of a transformation's actions. In this paper, we exploit this information and define patterns which allow transformation engineers to trim transformations to facilitate the handling of target model changes. Results: We describe a formal framework which serves as basis for realizing the patterns as what we call retainment policies. Based on this framework we present an implementation of the retainment policy approach for QVT Relations. Conclusions: The retainment policies which allow a transformation developer to develop transformation rules that will retain manual changes to the target model. The implementation of the approach for QVT Relations shows that it is realisable in state-of-the art transformation techniques. However, being defined on a theoretical level, also other transformation approaches will benefit from our work.