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JAvascript Suite for Sparql Access

Java 3.55% Shell 0.05% JavaScript 94.11% PHP 1.40% CSS 0.88%

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jassa's Issues

bridgePromise should work with multiple labels

[FEATURE-REQUEST] Add optionalFilter to criteria

var criteria = {name: {$regex: filterText, $optional: true}};

would ease some pain!

Odd SPARQL query generated when using SparqlServiceHttp constructor with a graph

When creating a Jassa.sparql.SparqlServiceHttp like that

$scope.endpoint = new Jassa.sparql.SparqlServiceHttp('http://localhost/sparql', 'http://linkedgeodata.org')

and then call

$scope.endpoint.execSelect('SELECT ?t WHERE { [] a ?t }');

the query that is generated is:

http://localhost/sparql?default-graph-uri=h&default-graph-uri=t&default-graph-uri=t&default-graph-uri=p&default-graph-uri=:&default-graph-uri=/&default-graph-uri=/&default-graph-uri=l&default-graph-uri=i&default-graph-uri=n&default-graph-uri=k&default-graph-uri=e&default-graph-uri=d&default-graph-uri=g&default-graph-uri=e&default-graph-uri=o&default-graph-uri=d&default-graph-uri=a&default-graph-uri=t&default-graph-uri=a&default-graph-uri=.&default-graph-uri=o&default-graph-uri=r&default-graph-uri=g&query=SELECT ?t WHERE { [] a ?t }&

(I already URL decoded it for readability.) There are several default-graph-uri GET parameters, each holding one letter of the actual default graph 'http://linkedgeodata.org'

There are no means to update Sponate mapping

When having set a Sponate mapping, e.g. via

store.addMap({
    name: 'castles',
    template: [{
      id: '?s',
      name: '?l',
      depiction: '?d',
    }],
   from: '{ Select * { ?s a dbpedia-owl:Castle ; rdfs:label ?l ; foaf:depiction ?d ; dbpedia-owl:owner ?o . ?o rdfs:label ?on . Filter(langMatches(lang(?l), "en")) . Filter(langMatches(lang(?on), "en")) } Limit 10 }'
});

there is no way to update it. Calling the addMap method again will result in an error:

[ERROR] An attribute / store with name concept0 already exists

In some cases it would be very usefull to update or re-set a mapping for a given name, e.g. via delMap or by just calling addMap again.

Question: Can Jassa parse RDF/Turtle files?

Not sure if this is in scope for the project, but does Jassa support accessing RDF/Turtle documents on the Web, or does it require a SPARQL endpoint?

Aside: are questions like these best asked here or is there a mailing list?

Improvement: capitalize keywords

I personally prefer

SELECT DISTINCT * { ?distinctThing a :selectExample. FILTER NOT EXISTS (?distinctThing a :notThatGroup ) } LIMIT 100

over

select distinct * { ?distinctThing a :selectExample. filter not exists (?distinctThing a :notThatGroup ) } limit 100

as this makes the queries more readable.

Sponate API: Add methods for simple URI-based lookups

Sponate .asList(true) for retaining RDF nodes does not work with preferred labels

[FEATURE-REQUEST] jassa.sparql.ElementFilterNotExists

It would be nice if you could set a FILTER NOT EXISTS (...) with the sparql module.

For example:

var s = rdf.NodeFactory.createVar("s");
var p = rdf.NodeFactory.createVar("p");
var o = rdf.NodeFactory.createVar("o");
filter = new sparql.ElementFilterNotExists(new rdf.Triple(s, p, o));
console.log(filter.toString()); // logs FILTER NOT EXISTS (?s ?p ?o)

[FEATURE-REQUEST] jassa.sparql.ElementBindAs

It would be nice to have this for arithmetics, for example:
For example:

var s = rdf.NodeFactory.createVar("s");
var p = rdf.NodeFactory.createVar("p");
filter = new sparql.ElementBindAs(s + "/ 1000",p);
console.log(filter.toString()); // logs BIND ((?s / 1000) AS ?p )

[FEATURE-REQUEST] Add languageFilter to criteria

store.addMap({
    name: 'castles',
    template: [{
        id: '?s',
        name: '?l'
    }],
    from: '?s a dbpedia-owl:Castle ; rdfs:label ?l ; '
});

var criteria = {name: {$regex: filterText, $lang: "en"}};

looks much better than

store.addMap({
    name: 'castles',
    template: [{
        id: '?s',
        name: '?l'
    }],
    from: '?s a dbpedia-owl:Castle ; rdfs:label ?l ; '
         + 'Filter(langMatches(lang(?l), "en"))'
});

var criteria = {name: {$regex: filterText}};