xml - Do current CKAN instances in the field support the JSON-LD DCAT format? -

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i'm working on graduate course project develop query client ckan , dcat catalogs. i've read lot of documentation , specs, yet lot of things seem still proposals figured needed reach out ask knows.

the project open data site discusses dcat format json-ld based format particular schema. schema makes sense there lot of push in class around targeting federal government data data.gov, runs ckan (as many of these data sharing systems according research). everywhere i'm looking, people suggesting ckan supports dcat, i'm not finding that.

for instance, http://catalog.data.gov/api/3/action/package_show?id=national-stock-number-extract shows different json format. appears have values used translate json-ld dcat object.

the following properties in dcat schema, of document doesn't conform. looks of translation json-ld dcat.

{     key: "bureaucode",     value: [         "007:15"     ] }, {     key: "accrualperiodicity",     value: "r/pt1s" }, {     key: "spatial",     value: "national , international" }

then came across this page shows expected format i'm looking for, says it's proposal. still accurate? in case of data.org, can append .rdf end of dataset uri (one of features proposal mentions) , produces rdf xml document using dcat vocabulary. same data set accessed via ckan api doesn't provide same functionality.

for instance.

http://catalog.data.gov/dataset/housing-affordability-data-system-hads -> page

http://catalog.data.gov/dataset/housing-affordability-data-system-hads.rdf -> rdf xml

http://catalog.data.gov/api/3/action/package_show?id=housing-affordability-data-system-hads -> ckan's json format

http://catalog.data.gov/api/3/action/package_show?id=housing-affordability-data-system-hads.rdf -> not found

so deal exactly? see plugin dcat in development, has not been finished , integrated ckan production?

support dcat not part of ckan core, there ckanext-dcat extensions. still "work in progress", it's not yet finished.

if have specific needs not yet implemented, might want fork repo , add features.

i know swedish portal Öppnadata.se uses ckanext-sweden, customizes ckanext-dcat extend.

the specification found seems outdated, couldn't find better myself. , guess it's basis ckanext-dcat extension.

all said, not first-hand information. start developing dcat based catalogue, , tried answer questions posed time ago. answer above reflects found out until :)


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