Lub: a DSL for Dynamic Context Oriented Programming
- 1. Lub A language for Dynamic Context Oriented Programming Steven Costiou Mickaël Kerboeuf, Glenn Cavarlé, Alain Plantec UMR CNRS 6285, Lab-STICC/MOCS Université de Bretagne Occidentale
- 2. Drone 1 + GPS Drone 2 + GPS Target
- 3. Drone 2 NO GPS GPS loss Drone 1 + GPS
- 5. Unanticipated = Not foreseen at design time
- 6. Unanticipated = Not foreseen at design time = The behavior we need was not expected
- 7. ▪ Schéma 4 : Adaptation proposition GPS sharing Drone 1 + GPS Drone 2 NO GPS
- 8. Unanticipated behavior adaptation at runtime
- 10. Minimal anticipation = Anticipate the need to face unanticipated adaptation
- 11. Minimal anticipation = Anticipate the need to face unanticipated adaptation = Build Support (frameworks)
- 12. Dynamic context oriented programming (COP)
- 14. ● Instance based adaptation ● Adapted object preserve their identity
- 15. How do we adapt ?
- 16. ● Free adaptation strategy ● Easy and controlled behavior selection
- 17. LUB An extension of Pharo
- 18. Behavior adaptation through dynamic lookup control
- 19. #pinPoint
- 21. Lookup starts in the object’s lookup base Lookup #pinPoint
- 23. New lookup base
- 24. lub := LookupBase named: ‘PeerTrackerLookupBase’ targetClass: PeerPositionTracker
- 26. bind
- 27. positionTracker lookupBase: lub. positionTracker pinPoint lub := LookupBase named: ‘PeerTrackerLookupBase’ targetClass: PeerPositionTracker
- 28. #pinPoint
- 29. #pinPoint
- 32. Selection of the behavior to adapt ?
- 33. lub := LookupBase named: ‘PeerTrackerLookupBase’ targetClass: PeerPositionTracker with: #(#pinPoint). positionTracker lookupBase: lub. positionTracker pinPoint. positionTracker position.
- 35. #pinPoint
- 36. #position
- 37. ● Instance based adaptation ● Adapted object preserve their identity Binding an object to a meta object that controls the lookup ● Free adaptation strategy ● Easy and controlled behavior selection
- 38. Issues ?
- 39. States consistency with an adaptation ?
- 41. Validation and consistency of the adapted behavior ?
- 42. Experiments on a physical device ?
- 43. Lub A language for Dynamic Context Oriented Programming Steven Costiou Mickaël Kerboeuf, Glenn Cavarlé, Alain Plantec UMR CNRS 6285, Lab-STICC/MOCS Université de Bretagne Occidentale