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Media Types #21
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NOTE: Previously a TTL file, now a CSV file. Will be converted to TTL file once review is completed. |
The official media type string registered by IANA is not really a skos:altLabel. It is the most important label. Perhaps switch with prefLabel? In the link relation types, the IANA string is also the prefLabel. |
+1 for an OGC-central maintenance. |
Could From https://www.w3.org/TR/skos-reference/#labels :
From https://www.w3.org/TR/skos-reference/#notations :
How about the IANA registry? Is that available somewhere as RDF? If yes, what is used there? |
Yes to using |
The thing about skos:notation is that there may be multiple values - and they are supposed to be scoped by "datatype" - so we need a canonical URI for "This is an IANA media-type token" maybe using https://www.iana.org/assignments/media-types ? <http:https://www.opengis.net/def/media-type/ogc/1.0/geopackage> skos:notation "application/geopackage+sqlite3"^^<https://www.iana.org/assignments/media-types> Note this would allow us to have the short names for formats in OGC specs also registered as notations: <http:https://www.opengis.net/def/media-type/ogc/1.0/gml> skos:notation "gml"^^http:https://www.opengis.net/def/serviceType/ogc/wfs/1.0> |
SKOS is not optimal from two perspectives:
Hence, from a practitioner's perspective and as a compromise combining the best of all worlds let me suggest the same: allowing "image/png" plus have a synonym for http:https://www.opengis.net/def/media-type/image/png . PS: And let us agree on not using the version number which is ill-defined and (mis)used in different ways in def/ . |
@pebau - I may be wrong, but the discussion about SKOS is not about embedding URIs where media-type tokens currently live - its about having a canonical mechanism to have a discoverable web object that tells you what this notation is. Think of SKOS as purely the format of the "catalog record" in our register of tokens.... |
@rob-metalinkage, my apologies if I got this wrong. My impression was that a general identification mechanism was to be established for most, if not all services to use. Which would be a good thing, I like the idea that such identifiers can float around, and all use it the same, interchangeable way; for such a case I just wanted to keep the well-known synonyms. But then again, please ignore if not applicable in the first place. |
All, Thanks for the suggestions and discussion. I'll update the CSV to reflect the approach proposed by @heidivanparys and @rob-metalinkage , specifically:
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I have just updated mediatypes.csv with commit d177571 |
The OGC Media Types register has been published at http:https://www.opengis.net/def/media-type/ |
The OGC Media Types register moved to https://www.opengis.net/def/media-type/ Created a skos:exactMatch from http:https://www.opengis.net/def/media-type/ to https://www.opengis.net/def/media-type/ |
when we update the HTML viewer for the Defs Server one of my ambitions is to better handle the various issues around this. Open to feedback from the field here. A smartish client could automatically follow sameAs and/or exactMatch - but particularly some equivalent of rel='canonical' and bring in the preferred object details, with some sort of message about canonical status and bookmark/citation expectations. This would also handle the general issue for bookmarking objects by URI - not the redirected resource - as browser seem too dumb to handle the nuances of 3xx redirects. (Again, any insights welcome!) |
OAB Issue 1404
Status: Open
Assigned To: Heazel, Charles
OAB Telecon 20200128
proposing that the OAB recommend that a new OGC policy and prodcess related to the definition, approval, and maintenance of OGC media types become a new responsibility of the OGC Naming Authority.
Related to 1436 - link types
ACTION: send background to OGC-NA for their discussion (including IANA) - Chuck to contact Gobe. Include Issue 1436
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