Hi,
I have a use case to expose web services (on EDG i.e. appearing in the
Swagger page) which are basically parameterised SPARQL queries. I've got
this working for SELECT and ASK queries, using dash:SPARQLMultiFunction and
dash:ScriptFunction respectively. I'd like something similar for CONSTRUCT,
that can return RDF. So far, I've only been able to get close using a
dash:ScriptFunction e.g. using the below:
```
exfun:test5
a dash:ScriptFunction ;
dash:apiStatus dash:Stable ;
dash:canWrite true ;
dash:js """
function collectTriples(subject, triples) {
graph.triples(subject, null, null, true).forEach(t => {
triples.push(t);
if(t.object.isBlankNode()) {
collectTriples(t.object, triples);
}
})
}
let triples = [];
collectTriples(focusNode, triples);
IO.serializeRDF(triples)
""" ;
rdfs:label "test 5" ;
.
```
This is close to what I want (need to remove newline characters etc.: ""@prefix
arg: <http://spinrdf.org/arg#> .\n@prefix dash:
<http://datashapes.org/dash#> .\n@prefix dc:")
However the above ADS script is more complex than the SELECT and ASK cases,
which are just wrapped SPARQL. It seems unnecessarily complex for what
could be a parameterised SPARQL CONSTRUCT. Is there a simpler way to
achieve this? (and ideally obey content negotiation/deliver other RDF
serialisations, as per the SPARQL endpoint).
Thanks
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