rdf-ext / rdf-store-sparql Goto Github PK

When i use waitFor(stream) with stream = store.remove(dataset.toStream()), and dataset being an empty dataset, it creates an infinite loop. The promise in waitFor never resolves

store is rdf-store-sparql

Adding and remove blank nodes requires a clever algorithm to identify the unique triples.

rdf-store-sparql currently sends requests to the server with teh accept header set only to application/n-triples even if parsers for other formats are available. Because of this rdf-store-sparql can no longer be used against Stardog which returns HTTP/1.1 406 Not a supported accept type(s): [application/n-triples].

I`m using RDF-EXT for a small application at the moment. Which is very hard since their is very limited documentation. So the code I have been writing is based on crawling through the RDF-EXT code.

I succeeded to get results from a SPARQL endpoint however, in the debugger I see that I get results from the SPARQL endpoint, but I am not able to retrieve the results and use them. My thoughts tell me I have to get results via the callback (which will give me a Graph) and should use this Graph object further in the application. But I cant figure out how.

This is the javascript:
var options = {endpointUrl: 'https://dydra.com/nicky508/firebrary_pictogrammen/sparql'}; var endpoint = new SparqlStore(options); console.log(endpoint.match(null, "http://purl.org/ontology/stories/describedBy", null, null ,null ,100));

This is the result of the log: Promise { then=then(), catch=catch()})
Certainly, because this is not the right. How should I do it right???

Thanks in advance.

I'm using rdf-store-sparql, which communicates with a remote Jena triple store

When adding new quads to a dataset from two different graph, only the graph of the very first quad is impacted by the import request.

let quads =[];
quads.push(rdf.quad(subject, predicate, object, graph1));
quads.push(rdf.quad(subject, predicate, object, graph2));

let dataset = rdf.dataset(quads);
//Or even dataset.addAll(quads)

let stream = store.import(dataset.toStream());
rdf.waitFor(stream).then(() => { //doing something })

This lines of codes only adds quads on the first graph and not on the second.
The number of quads doesn't matter, I could have one quad going on the first graph and 20 going on the second, it will only add one quad to the store.

Maybe it's not the update but the backend stopping to support CORS, still the exception message could be more helpful.

Uncaught (in promise) TypeError: Cannot read property 'then' of undefined(…)
SparqlStore.match @ index.js:125
SparqlStore.match @ index.js:119
SparqlStore.graph @ index.js:113