How to list all properties on a custom Wikibase instance - sparql

Question

I am trying to list all properties created in on a wikibase I installed, using docker-compose, based on this install.
Now, want to list all properties that are available in this wikibase, similar to getting that list available through:
<wikibase.url>wiki/Special:ListProperties
I have also extracted that list through SPARQL with the following SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX schema: <http://schema.org/>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
SELECT DISTINCT
?property
?propertyType
?propertyLabel
?propertyAltLabel
WHERE {
?property a wikibase:Property ;
rdfs:label ?propertyLabel ;
wikibase:propertyType ?propertyType .
OPTIONAL {?property skos:altLabel ?propertyAltLabel .}
}
Running that SPARQL query is expensive though and I need to run that query often, so I would very much like to get that list of properties to the core wikibase API.
Is that possible?

Answer 1

If you know the namespace number for properties on the target wiki (it’s usually 122 if the wiki has an Item: namespace, or 120 if, like on Wikidata, items are in the main namespace), you can use the core allpages API: https://www.wikidata.org/w/api.php?action=query&list=allpages&apnamespace=120
To also get the labels at the same time, use it as a generator and combine it with the entityterms API (new in 1.35; looks like it’s not documented yet, but see T257658): https://www.wikidata.org/w/api.php?action=query&generator=allpages&gapnamespace=120&prop=entityterms&wbetterms=label