[MarkLogic Dev General] question about transactions

Erik Zander Erik.Zander at studentlitteratur.se
Wed Jan 24 08:34:58 PST 2018


Hi All,

I have a question about I think transactions.

I want to insert some rdf and then query the database, and I want to do this in a function so I can call the function and depending on if I have the data in Marklogic or not get the data as rdf and insert it.

But my problem is that the following code only returns result second time I call it.
I’m thankful for pointers here
Regards
Erik
Code below
==============================================

xquery version "1.0-ml" encoding "utf-8";


import module namespace sem = "http://marklogic.com/semantics"
      at "/MarkLogic/semantics.xqy";
declare namespace rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";

let $wDataRdf :=
<rdf:RDF
                      xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
                      xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"

                      xmlns:wikibase="http://wikiba.se/ontology#"
                      xmlns:wd="http://www.wikidata.org/entity/"
                      >
    <rdf:Description rdf:about="http://www.wikidata.org/entity/Q925hhq">
        <rdfs:label xml:lang="sv">mup</rdfs:label>
    </rdf:Description>

</rdf:RDF>
let $insert :=  xdmp:eval(
            '
            import module namespace sem = "http://marklogic.com/semantics"
      at "/MarkLogic/semantics.xqy";
            declare variable $wDataRdf as node() external;
            sem:rdf-insert(sem:rdf-parse($wDataRdf,("rdfxml", "graph=http://www.wikidata.org")))'
            ,(xs:QName("wDataRdf"), $wDataRdf)
            )
return sem:sparql('
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
SELECT ?label WHERE {
   wd:Q925hhq  rdfs:label ?label
   FILTER (langMatches( lang(?label), "SV" ) )
}'
)



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