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Fantastic Java contracts and where to define them? - M Dyankov
- 1. Fantastic Java Contracts and where to define them? @MilenDyankov Developer Advocate, Liferay
- 2. r = 9.5mm r = 7.5mm r = 7.5mm r = 3.75mm r = 3.75mm r = 2mm r = 2mm Liferay Platform Marketplace Sync Screens Mobile SDK Faces AlloyEditor Liferay IDE AlloyUI Lexicon Electric Senna.js Metal.js Deploy
- 3. Once upon a time there was new Keyword();
- 4. Once upon a time there was new Keyword(); Then the spring brought us some <beans>
- 5. Once upon a time there was new Keyword(); Then the spring brought us some <beans> Today we have @Components
- 6. It was not about writing code easier or faster! It was opening the door for a whole new world of possibilities!
- 7. Once upon a time there were libs and deps folders
- 8. Once upon a time there were libs and deps folders Then Maven brought us <dependencies>
- 9. It was about easier and faster! It didn’t change the way we think about dependencies, it changed the way we store and distribute them!
- 10. Dependencies
- 11. Dependencies They can be transitive, but it’s still us developers solving the conflicts!
- 12. Dependencies They can have version ranges but it’s still us developers to know which SLF4J logger finally goes to production!
- 13. Dependencies They have scopes but it’s still us developers to decide what is provided by containers, runtimes and systems!
- 14. Dependencies They define relationships between each other but not to external resources like runtime, OS, infrastructure, ...
- 15. Dependencies They tell you NOTHING about WHY they depend on each other!
- 16. box box Dependencies as we see them! Depends on
- 17. box item box item Dependencies as they are Depends on
- 18. box item box item Requirements and Capabilities I need XYZ inspect create I have XYZ inspect create
- 19. box item box item Requirements and Capabilities I need XYZ inspect create I have XYZ inspect create No dependencies but contracts
- 27. calc API markup simple calc depends depends editor depends Contractors repository register simple-calc . . . I require calc implementation I provide calc implementation hint resolve
- 28. calc API markup simple calc depends depends editor depends Contractors repository register another calc depends register simple-calc another-calc . . . I require calc implementation I provide calc implementation I provide calc implementation hint resolve
- 30. module module module module module module module contractor contractor modular runtime resolve context resolver I provide …. I require …. I provide …. I provide …. I provide …. I provide …. I provide …. I provide …. I provide …. I provide …. I require …. I provide …. module module module module contractor A contractor B ... module M1 module M2 ...
- 31. Thank you! @MilenDyankov Developer Advocate, Liferay