Presentation of the paper "Hydra: A Vocabulary for Hypermedia-Driven Web APIs" at the 6th Workshop on Linked Data on the Web (LDOW2013) at the WWW2013 in Rio de Janeiro, Brazil

1. Hydra
AVocabulary for HypermediaAPIs
Markus Lanthaler
Graz University ofTechnology

2. Why can’t Web APIs be browsed?

3. - Layered system

4. REST + Linked Data: a match made!?

6. Resource
Link
Form
Class
rdfs:Resource
rdf:Property
rdfs:Class
Operation

7. Resource
Link
Form
Class
rdfs:Resource
rdf:Property
rdfs:Class
Operation
Templated

9. {
"id": "cso29ax",
"title": "LDOW2013 presentation",
"description": "Prepare LDOW2013 presentation",
"is_open": true,
"created_at": "2012-11-26T04:49:44Z",
"comments": "/issues/cso29ax/comments/"
}
http://example.com/issues/cso29ax

10. {
"@context": "/ctx/context.jsonld",
"id": "cso29ax",
"title": "LDOW2013 presentation",
"description": "Prepare LDOW2013 presentation",
"is_open": true,
"created_at": "2012-11-26T04:49:44Z",
"comments": "/issues/cso29ax/comments/"
}
http://example.com/issues/cso29ax
{
"@id": "#comments",
"@type": "hydra:Link",
...
}

11. {
"@id": "#comments",
"@type": "hydra:Link",
"supportedOperations": [
{
"@id": "#create-comment",
"@type": "hydra:CreateResourceOperation",
"label": "Creates a new comment",
"method": "POST",
"expects": "#Comment",
"returns": "#Comment"
}
]
}

12. {
"@id": "#Comment",
"@type": "hydra:Class",
"supportedProperties": [
{
"property": "#text",
"required": true,
"readonly": false,
"writeonly": false
}
]
}

13. Hydra Console

15. © 2013, Markus Lanthaler. Some Rights Reserved.
http://creativecommons.org/licenses/by-nc-sa/3.0/
Thank You

16. Questions?
Markus Lanthaler
http://www.markus-lanthaler.com
@MarkusLanthaler
mail@markus-lanthaler.com

17. Image Credits
(1) http://www.flickr.com/photos/ecstaticist/3650101568/
(2) http://www.flickr.com/photos/eole/8138645952/
(5) http://www.vonwong.com/ (with permission)