Fix DCAT

[coreation]

Declare list of things that need to be changed to the DCAT feed.

[coreation]

• [x] Add source back to the DCAT, has to be a HTTP URI, if not don't add the source property
• [x] Remove format from the meta-data in the UI
• [x] Rights has to be a dropdown of links to licenses (https://github.com/okfn/licenses/blob/master/licenses/groups/ckan.json)
• [x] Language ( @pietercolpaert searches for URI's) for now is just a dropdown of iso languages
• [x] Remove type from the meta-data in the UI
• [x] Provide an endpoint for the licenses
• [x] Provide an endpoint for the languages

[pietercolpaert]

Concerning language: http://dublincore.org/documents/dcmi-terms/#elements-language

It should be according to RFC4646

[pietercolpaert]

Aha! I've found out that lexvo is a nice resource for languages

The URI towards it can be created using this: http://www.lexvo.org/id/iso639-3/nld for Dutch :)

[coreation]

Great! So that means that we can use the lexvo link as a resource since it refers to a page with the language rdf properties? I've found a list of all of the iso codes the lexvo uses (http://www-01.sil.org/iso639-3/iso-639-3.tab), perhaps we should pick a few out of them, put them in a seeder and then use a table to fetch our supported languaged codes from. The entire list is quite extensive, I wouldn't recommend adding all of them.

[pietercolpaert]

Putting them in a seeder sounds good!

I think we should support all of them and work with an autocompletion box. I would also support different languages. E.g., if you start Neder... that it autocompletes Nederlands, but also when you type Dut... that it autocompletes Dutch. Both autocompletions would in the back have the same URI.

For the autocompletion you could have a new endpoint, or add it as a resource and use SPECTQL to filter it ;) I like the second option for the eat-your-own-dogfood approach. I like the first option as well because it keeps the user environment cleaner.

Option 1

GET api/languages?q=Nederla

[
 { "uri":"http://www.lexvo.org/id/iso639-3/nld","name" : "Dutch" }
]

Option 2

GET tdt/languages → resource with all the languages

GET spectql/tdt/languages?name~'Nederla'

[pietercolpaert]

And on a sidenote, if you are looking for instances of a certain class, Sindice is the right tool: http://sindice.com/search?q=http%3A%2F%2Fpurl.org%2Fdc%2Fterms%2FLinguisticSystem&nq=&fq=