webapp.data.demo.system.aquery.rq Maven / Gradle / Ivy

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Corese is a Semantic Web Factory (triple store and SPARQL endpoint) implementing RDF, RDFS, SPARQL 1.1 Query and Update.

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select * where {
  ?x ?p ?y
}


#
# @init function called by Parameter after Parameter graph load processing
# We can set application specific parameters
# PRAGMA: for this @init function the current graph is the Parameter graph
# whereas for other @event function it is the current graph of the query at stake
#
@initParam
function us:initParam() {
    xt:print("@initParam");
    us:initialize();
}

@initServer
function us:initServer(url) {
    xt:print("@initServer", url);
    xt:print(xt:graph())
}

# current graph is Parameter graph

function us:initialize() {
    let (select ?name
            (aggregate(distinct ?url) as ?list) 
            (aggregate(distinct ?p) as ?plist)
         where {
            [] cos:name ?name .
            optional { [] cos:notify ?url }
            optional { [] cos:predicate ?p }
          }) {
        xt:print("start agent:", ?name) ;
        static(notifyList = list);
        xt:print("notify:", notifyList);
        static(predicateList = plist);
        xt:print("predicate list:", predicateList)
    }
}


@before @start
function us:before(q) {
	xt:print("@before");
	xt:print(java:getAST(q))
}

@after @finish
function us:after(m) {
	xt:print("@after")
}