Acceleo and Android

Acceleo code generation, from the model to an Android application. Thanks to the use of Eclipse modeling, you will see how we can use a domain specific model to generate an Android application.

Transcript

1. Gaël Blondelle gael.blondelle@obeo.fr Acceleo Code Generation From the model to the Android app Stéphane Bégaudeau stephane.begaudeau@obeo.fr
2. Goals of the tutorial
3. Goals of the tutorial Beginners See a simple concrete case study Acceleo addicts Discover new killing features Android experts Learn enough to build a full fledged generator
4. I 'm I 'm not not an Android an Android development expert development expert
5. 1. Acceleo: A new code generator
6. A long history... A long history... Version 3.0 is part of the Eclipse Helios release train From Acceleo.org in 2006... ...to Eclipse.org in 2009
7. A long history... A long history... Acceleo 2 Acceleo 3
8. 8 Metamodel and templates based technology Implementation of the Model To Text OMG standard (MTL) Eclipse Modeling / M2T Project Tooling to help starting a new generator from scratch A new code generation language
9. 9 Acceleo Runtime (Compiler + Engine) Acceleo Development Tools + = Eclipse independant: can be run anywhere (plain old Jar, OSGi, Eclipse...) The Acceleo SDK
10. 2. Prototype based approach
11. Let's have a look at the Android prototype
12. 12 Unlock the power of your models Java UI Java DB XML Properties Different kinds of source artifacts to be generated
13. 13 One kind of file to be generated... ...one MTL file to be created Good Practice
14. Manifest, database adapter, properties file, edition page, edition page layout...
15. 15 A little bit of syntax Header
16. 16 Body A little bit of syntax
17. 17 A little bit of syntax Queries can return any kind of objects Templates are better for generating text and return a string You can call Java services from a template or a query The result of a query is stored in a cache.
18. 18 The workflow file The MTL file calling the other ones @main annotation
19. 19 Initialize the generation project 1. Create new Acceleo project 2. Use the wizard (update file paths) 3. Create a workflow file
20. 20 3... 2... 1... Launch configuration Anything that can launch Java... Generated Java Main Stand alone Same VM as Eclipse Standalone Standalone
21. 21 Ignition 1. Launch the generator (launch config as Eclipse plugin)
22. From a static generator... … to a one dynamic 3.
23. 23 Quick replacement Select a text section in the template, then hit "Content Assist" hotkeys
24. 24 Hierarchy Tree Select a text section in the template, then right-click "Source > As For/If"
25. 25 "As For/If" is quick but dirty... ...use template Good Practice polymorphism instead!!
26. 26 Generation patterns Use the Generation Patterns View
27. 27 Extract as template Select a text section in the template, then right click "Refactor > Extract as template"
28. 28 Refactoring Alt + Shift + R
29. Launch the generator - open the Result view - launch config as Eclipse plugin - activate the Traceability Have a look at the Result view
30. 30 4. Make the Android App run
31. 31 Debug your templates Thanks to Acceleo debugger
32. 32 Configure the Android Development Kit Create a new Android Virtual Device - AVD Set the path to the SDK location
33. 33 Turn on the phone
34. 34 5. A generic Android App generator
35. Create a fresh new model
36. 36 Android Apps Generate new
37. 37 6. A new App in a few clicks
38. 38 Packaging and deploying Generate an Eclipse UI plugin Add an action on right-click on models Create a builder Synchronize your code and your model
39. 39 Packaging settings Filename pattern of the model Target folder of the generation Warning Eclipse specific
40. 40 Workout 1. Create new Acceleo UI project 2. Use the wizard 3. Launch a 2n d Eclipse Runtime and test
41. 41 7. Override specific behavior
42. 42 Static overriding Dynamic overriding Overriding existing generators Eclipse-only
43. 43 Module B Template MT Module A Template MT Extends overrides Module C Imports C invokes MT, B.MT will be executed Overriding behavior
44. 44 A common problem with code generators... if you change the generated code... your modifications are lost during the next generation. Lost code
45. 45 © Copyright 2010 Obeo Protected area Will not be erased after re-generation Dont forget the comments marks... ... and the ID
46. @Generated Acceleo also uses JMerge You can protect a whole block with a simple comment
47. 47 © Copyright 2010 Obeo 8. The next step: Acceleo 3.1
48. 48 © Copyright 2010 Obeo Documentation
49. 49 © Copyright 2010 Obeo UI Improvements
50. Thank you for your attention! Questions?