Closed prashydee closed 1 year ago
Hello Prashant,
as we understand your issue, we have two different subjects :
1) It isn't possible for the moment being to drill-down through classes from the selection of the starting class (even if we've already an issue about it here cf https://github.com/sparna-git/Sparnatural/issues/351).
2) But still possible to tune the tree-selector following your structure. You'll find a few indications to do so in the documentation here : https://docs.sparnatural.eu/OWL-based-configuration-datasources.html#your-own-sparql-query-tree. Not sure it matches your need, but do tell us !
Best, Marie
TreeWidget can be used to display taxonomy of classes using these datasources:
:tree_root_personClass rdf:type owl:NamedIndividual ,
<http://data.sparna.fr/ontologies/sparnatural-config-datasources#SparqlTreeRootDatasource> ;
<http://data.sparna.fr/ontologies/sparnatural-config-datasources#queryString> """PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?uri ?label ?hasChildren
WHERE {
VALUES ?uri {$domain}
?uri rdfs:label ?label .
FILTER(lang(?label) = '' || lang(?label) = $lang)
BIND(true AS ?hasChildren)
}""" .
:tree_children_subClassOf rdf:type owl:NamedIndividual ,
<http://data.sparna.fr/ontologies/sparnatural-config-datasources#SparqlTreeRootDatasource> ;
<http://data.sparna.fr/ontologies/sparnatural-config-datasources#queryString> """PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?uri ?label ?hasChildren
WHERE {
?uri rdfs:subClassOf $node .
?uri rdfs:label ?label .
FILTER(lang(?label) = '' || lang(?label) = $lang)
OPTIONAL {
?uri ^rdfs:subClassOf ?children .
}
BIND(IF(bound(?children),true,false) AS ?hasChildren)
}""" .
this works nice on DBPedia:
I will see if I integrate these datasources in the set of datasources provided out of the box by Sparnatural.
Hi @tfrancart,
I would like to be able to use subClassOf hierarchies to drill-down through classes before retrieving the corresponding individuals. The tree-selector seems to be tuned for skos:narrower / skos:broader trees. Could this also work for rdfs:subClassOf hierarchies? Ideally this would be nice to achieve in the selection of the starting class too. Is this yet possible?
Kind Regards, Prashant