Describing Tools and Methodologies used and that will be used to develop the GMF editors of Bonita Open Solution Studio. It is an eclipse RCP application awarded "Best Modeling Application" during Eclipse Community Awards 2011 and was finalists in "Best Application" category during Eclipse Community Awards 2012.

1. Tools and Methodologies for GMF
Aurélien Pupier
R&D Engineer, Studio Project Leader
GMF-Runtime Committer
@apupier
EclipseDay Delft , September 27, 2012

2. Agenda
Show me a GMF editor
GMF Big Picture
Methodologies
Tooling
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3. GMF BIG PICTURE
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4. GMF
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5. GMF Basic Workflow
Semantic Diagram
Model (ecore) Model
Mapping
GMF codegen
Code generation
Diagram code
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6. What happens after the first
generation?
Requirements update
Introduce specific behavior
I’m not able to do a one shot!
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7. METHODOLOGIES
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8. Update the model!
Straightforward
Best maintainability
Easiest solution
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9. GMF Extension points
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Classical Eclipse way
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10. Extension points – Typical pattern
GENERATED Diagram PLUG-IN
XXXEditPartProvider Reference XXXEditPart
extends extends
Custom Diagram PLUG-IN
CustomXXXEditPartProvider Reference CustomXXXEditPart
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11. Generation templates
When?
Apply to a whole kind of elements
Ultimately
Useful for:
Regeneration
New element introduced
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12. Generation aspect templates
Reduce amount of code to maintain
Avoid code duplication
Down grain from class to method
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13. Generation aspect templates
.xpt
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14. Another tip to reduce size of
custom generation templates?
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15. Utility plugin – why?
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16. Utility plugin – how?
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17. Modify Generated code
@Generated NOT
Sandbox
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18. Projects Structure (1/2)
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19. Projects Structure (2/2)
Generation Templates
Semantic Model
Diagram Model
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20. GMF Workflow
Semantic Diagram Model
Model (ecore) Model
Model
Mapping
Utility plugin
GMF codegen
Code generation Aspect Template
Diagram code
Extension points
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21. TOOLING

22. GMF-Tooling
Official tooling of GMF
● Several editors
● Wizards
● GMF Dashboard
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23. SWTBot4GEF
Automated UI tests
Simple API:
click
drag
select
activateTool
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24. Code generation Ant Task
Generate code at build time
Avoid reconcilier issues
Avoid modification of your sandbox commited
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25. OCL Editor and Interpreter
Write and Test constraints
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26. Simple Mapping Editor (1/2)
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27. Simple Mapping Editor (2/2)
All-in-one editor
Keep separation of concerns available
Eating your own dog food
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28. EDapt
Big underlying model modifications
PoC for BOS 6.0
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29. Keep in mind
Great tooling ecosystem
Proven methodologies for continuous
improvement
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30. To go further
Eclipse GMF Forum:
http://www.eclipse.org/forums/index.php/f/16/
Eclipse GMF Wiki:
http://wiki.eclipse.org/GMF
Talk together 
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31. aurelien.pupier@bonitasoft.com
Twitter: @apupier
Eclipse blog: www.bonitasoft.org/blog/category/eclipse
Talk to me about Bonita, BPMN2, Eclipse Modeling and more
Company: www.bonitasoft.com
Community: www.bonitasoft.org
Twitter: @bonitasoft