Get no result for specific query via Javascript

[sita...@gmail.com]

This works:

# ./stardog query -c "http://127.0.0.1:5822/schema;reasoning=RDFS" -q "SELECT *  { 'http://schema.org/Hospital' rdfs:subClassOf ?o }  LIMIT 50"

I get the transitive class hierarchy, as I expect.

However, from node.js I get a  [ ] when I do this:

         var query = "select ?s ?o { 'http://schema.org/Hospital' rdfs:subClassOf ?o }";

        console.log(query);

        conn.query("schema", query,

            null, null, 0, function(data) {

                console.log(data.results.bindings) }

Other queries (like '?s rdfs:subClassOf ?o') work fine for me via the node module.

Any hints?

[Jason Woodward]

You probably didn't enable reasoning in your js example?

conn.setReasoning('RDFS');

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[sita...@gmail.com]

I removed the reasoning to make the test case more simple. Sorry I should have posted exactly equivalent examples to eliminate that.

With the CLI I get results either way (with inference and without it), and no results at all with the JS client. 

I wondered about setting reasoning in the JS client. Apparently it's something other than setReasoning.

conn.setReasoning('RDFS');

     ^

TypeError: Object [object Object] has no method 'setReasoning'

[Jason Woodward]

Are you using the version of stardog.js from master on GitHub? I submitted a patch after 0.1 was released which added the ability to configure reasoning on the connection. 

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http://www.woodwardjd.com
@woodwardjd

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[Edgar Rodriguez]

As Jason points out, the master branch on GitHub is the most updated source.

I just updated stardog.js in NPM to make the reasoning changes available to everybody, so `npm install stardog` should now contain support for enabling reasoning.

Cheers,

Edgar

[sita...@gmail.com]

Cool - I npm updated and this now functions as expected. Thanks!

Edgar

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