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Creating 3rd Generation Web APIs with Hydra

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Presentation of the paper "Creating 3rd Generation Web APIs with Hydra" at the 22nd Internation World Wide Web Conference (WWW2013) in Rio de Janeiro, Brazil

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Creating 3rd Generation Web APIs with Hydra

  1. 1. Creating 3rd GenerationWeb APIs with HydraMarkus LanthalerGraz University ofTechnology
  2. 2. Level 0:The Swamp of POXLevel 1: ResourcesLevel 2: HTTPVerbsLevel 3: Hypermedia Controls
  3. 3. Using Web APIs is still challenging
  4. 4. - Layered system
  5. 5. Result: tightly coupled & brittle systems
  6. 6. REST + Linked Data: a match made!?
  7. 7. Semaphobia!?
  8. 8. ResourceLinkFormClassOperationHydra
  9. 9. {"id": "cso29ax","title": "WWW2013","description": "Presentation for dev track","is_open": true,"created_at": "2012-11-26T04:49:44Z"}http://example.com/issues/cso29axhttp://example.com/issue/{id}/comments/
  10. 10. {"id": "cso29ax","title": "WWW2013","description": "Presentation for dev track","is_open": true,"created_at": "2012-11-26T04:49:44Z","comments": "/issues/cso29ax/comments/"}http://example.com/issues/cso29ax
  11. 11. {"@context": "/ctx/context.jsonld","id": "cso29ax","title": "WWW2013","description": "Presentation for dev track","is_open": true,"created_at": "2012-11-26T04:49:44Z","comments": "/issues/cso29ax/comments/"}http://example.com/issues/cso29ax
  12. 12. {"@context": {..."is_open": "http://example.com/vocab#isOpen","comments": {"@id": "http://example.com/vocab#comments","@type": "@id"}}}http://example.com/ctx/context.jsonld
  13. 13. {"@context": "/ctx/context.jsonld","id": "cso29ax","title": "WWW2013","description": "Presentation for dev track","is_open": true,"created_at": "2012-11-26T04:49:44Z","comments": "/issues/cso29ax/comments/"}http://example.com/issues/cso29ax{"@id": "#comments","@type": "hydra:Link",...}
  14. 14. {"@id": "#comments","@type": "hydra:Link","supportedOperations": [{"@id": "#create-comment","@type": "hydra:CreateResourceOperation","label": "Creates a new comment","method": "POST","expects": "#Comment","returns": "#Comment"}]}
  15. 15. {"@id": "#Comment","@type": "hydra:Class","supportedProperties": [{"property": "#text","required": true,"readonly": false,"writeonly": false}]}
  16. 16. Hydra Console
  17. 17. © 2013, Markus Lanthaler. Some Rights Reserved.http://creativecommons.org/licenses/by-nc-sa/3.0/Thank You
  18. 18. Questions?Markus Lanthalerhttp://www.markus-lanthaler.com@MarkusLanthalermail@markus-lanthaler.com
  19. 19. Image Credits(1) http://www.flickr.com/photos/joeshlabotnik/3707230247/(2) http://onlyhdwallpapers.com/high-definition-wallpaper/903850/(4) http://www.flickr.com/photos/kaptainkobold/3203311346/(6) http://www.flickr.com/photos/joyoflife/1570126182/(8) http://en.wikipedia.org/wiki/The_Scream(9) http://www.vonwong.com/ (with permission)

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