On 24/10/2019 04:25, Mike Bendorf wrote:
Hi Holger,
My final intention is to get data in the shape of a tree. Based on
your example I managed to explore a taxonomy many levels down just by
adding the following:
|
{
conceptSchemes(uri:"http://resource.geosciml.org/classifierscheme/cgi/2016.01/earth-resource-expression";){
label
hasTopConcept {
label
narrower {
label
narrower {
label
narrower {
label
}
}
}
}
}
}
|
This is fine since I know how many levels deep I have to go.
Ok good.
Can I do the same with an Ontology, and can you help we with a base
querie as well please?
I noticed GRAPQL for ontologies requires a Shape/Class, but the list
available doesn't reflect the structure of my ontology. I'm not sure
what's the right step here
Up until 6.2 there is no way to query Ontologies with GraphQL. In 6.3 we
have added that ability using the so-called metashapes schema.
To query a subclass hierarchy in 6.2 or earlier, you'll need to use
SPARQL. However, you cannot use SPARQL to produce a JSON tree structure.
To produce arbitrary JSON we do have a technology called SWP with its
SWON library. If you tell me what kind of input you have (a superclass
or all classes?) and what output you need, I can send you an SWP script
to produce such query web services.
Holger
Much appreciated,
Mike
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