| Lea_Lacroix_WMDE | |
| Jun 13 2019, 8:54 AM |
| F36867690: image.png | |
| Feb 24 2023, 10:13 AM |
Users would like to query EntitySchemas through the Query Service.
As a first step we would like to make EntitySchemas available only as datatypes with a canonical URI scheme.
e.g. you can query all EntitySchemas that are describing a subclass of game, but not the labels of an EntitySchema (yet!)
Please see the below flow chart for your reference.
We expect this to be possible once these tickets are complete: T214884 T225778
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Open | None | T225701 Add EntitySchemas to the Query Service | |||
| Resolved | HasanAkgun_WMDE | T225778 [ES-M2]: Define canonical URI for EntitySchemas | |||
| Resolved | guergana.tzatchkova | T333655 [ES-M2]: Add link to the Concept URI to the EntitySchema sidebar | |||
| Resolved | ItamarWMDE | T333657 Actually decide on the exact format of the EntitySchema concept URI | |||
| Resolved | hoo | T336056 [ES-M2]: Add EntitySchema URI to RDF output | |||
| Invalid | None | T338352 Add support for EntitySchema URIs in the WDQS munger |
According to this post on Wikidata-l, there is a standard RDF serialisation (ShExR) for Shape Expressions, with a test suite on the ShEx spec github.
Myself and @NavinoEvans are currently working on schema documentation and place for the community to discuss schemas to increase to use and usability of them, having this feature would really help.
There is now an experimental query service at https://adhs-wde.toolforge.org/sparql that has a subset of all EntitySchemas. The default query shows that the ShExC code is embedded in the RDF as a rdfs:comment and can so it can be queried too. The next milestone is to load from the WD database instead of static files.
We have now finished the work on creating a space for community discussion of schemas.
https://www.wikidata.org/wiki/Wikidata:Schemas
https://www.wikidata.org/wiki/Wikidata:Schema_proposals
Having EntitySchemas in queries and as part of statements will allow us to make use of them much more in Wikidata. E.g we'd really love to have a property called something like 'Community agreed schema' for a topic to allow people to more easily understand and use schemas, possibly it could be this existing property proposal https://www.wikidata.org/wiki/Wikidata:Property_proposal/Shape_Expression_for_class
I think this is quite important (for discoverability and so on) so I set priority to "medium".