Newton's Preposterous Miscalculation

    @ezs/sparql

    1.2.0 • Public • Published

    sparql

    Ce plugin propose une série d'instructions liée à l’usage d’un SPARQL Endpoint.

    installation

    npm install @ezs/sparql

    usage

    Table of Contents

    SPARQLDecodeQuery

    • **See: SPARQLQuery **

    Take a query share link from a YASGUI editor and convert it into an object which contains the query and the endpoint. Then, it could be used by SPARQLQuery instruction.

    Input:
    {
      "linkQuery": "https://data.istex.fr/triplestore/sparql/#query=SELECT+DISTINCT+%3Fg%2C+count(*)+AS+%3Fnb+%0AWHERE+%0A%7B+%0A%09graph+%3Fg+%7B+%3Fs+%3Fp+%3Fo+%7D+%0A%7D+%0ALIMIT+3&contentTypeConstruct=text%2Fturtle&endpoint=https%3A%2F%2Fdata.istex.fr%2Fsparql%2F&outputFormat=table"
    }
    Output:
    {
      "query": "SELECT DISTINCT ?g, count(*) AS ?nb WHERE { graph ?g { ?s ?p ?o } } LIMIT 3",
      "endpoint": "https://data.istex.fr/sparql/"
    }

    SPARQLQuery

    Take a SPARQL query and endpoint and send in output the execution result in JSON format.

    Input:
    {
      "query": "SELECT DISTINCT ?g, count(*) AS ?nb WHERE { graph ?g { ?s ?p ?o } } LIMIT 3",
       "endpoint": "https://data.istex.fr/sparql/"
    }
    Ouput:
    { "head": { "link": [], "vars": ["g", "nb"] },
      "results": { "distinct": false, "ordered": true, "bindings": [
        { "g": {
             "type": "uri",
             "value": "http://www.openlinksw.com/schemas/virtrdf#"
           },
          "nb": {
             "type": "typed-literal",
             "datatype": "http://www.w3.org/2001/XMLSchema#integer",
             "value": "2477"
        }},
        { "g": {
             "type": "uri",
             "value": "https://bibliography.data.istex.fr/notice/graph"
           },
          "nb": {
             "type": "typed-literal",
             "datatype": "http://www.w3.org/2001/XMLSchema#integer",
             "value": "308023584"
        }},
        { "g": {
             "type": "uri",
             "value": "https://scopus-category.data.istex.fr/graph"
           },
          "nb": {
             "type": "typed-literal",
             "datatype": "http://www.w3.org/2001/XMLSchema#integer",
             "value": "2542"
        }}
      ]}
    }

    SPARQLToDistinct

    Format SPARQLQuery result as a LODEX routine.

    The input should contain at least two fields:

    • the first is corresponding with the _id output field
    • the second is corresponding with the value output field

    Warning: input's second field value should contain an integer

    See SPARQLQuery

    Input:
    { "head": { "link": [], "vars": ["g", "nb"] },
      "results": { "distinct": false, "ordered": true, "bindings": [
        { "g": {
             "type": "uri",
             "value": "http://www.openlinksw.com/schemas/virtrdf#"
           },
          "nb": {
             "type": "typed-literal",
             "datatype": "http://www.w3.org/2001/XMLSchema#integer",
             "value": "2477"
        }},
        { "g": {
             "type": "uri",
             "value": "https://bibliography.data.istex.fr/notice/graph" },
          "nb": {
             "type": "typed-literal",
             "datatype": "http://www.w3.org/2001/XMLSchema#integer",
             "value": "308023584" }},
        { "g": {
             "type": "uri",
             "value": "https://scopus-category.data.istex.fr/graph"},
          "nb": {
             "type":
             "typed-literal",
             "datatype": "http://www.w3.org/2001/XMLSchema#integer",
             "value": "2542"
        }}
      ]}
    }
    Output:
    {
       "total": 3,
       "data": [{
            "_id": "http://www.openlinksw.com/schemas/virtrdf#",
            "value": 2477
          }, {
            "_id": "https://bibliography.data.istex.fr/notice/graph",
            "value": 308023584
          }, {
             "_id": "https://scopus-category.data.istex.fr/graph",
             "value": 2542
           }
       ]
    }

    Keywords

    Install

    npm i @ezs/sparql

    DownloadsWeekly Downloads

    97

    Version

    1.2.0

    License

    MIT

    Unpacked Size

    19.3 kB

    Total Files

    8

    Last publish

    Collaborators

    • parmentf
    • touv
    • jj618