MarkLogic 12 Product Documentation
sem:rdf-parse

sem:rdf-parse(
   $in as item(),
   [$options as xs:string*]
) as sem:triple*

Summary

This function returns parsed sem:triple objects from a text format or XML.

Parameters

in The source to parse. This must either be a string or a node.

Parameters
in	The source to parse. This must either be a string or a node.
options	Parsing options. Only one each of the base, graph, override-graph, and format (ntriple, nquad, turtle, rdfxml, rdfjson, triplexml) options is allowed. Valid options include: base=URI A base URI to use during parsing. graph=URI The graph/context value to give to quads with no explicit graph specified in the data. Cannot be used with override-graph=URI (or an exception is thrown). override-graph=URI The graph/context value to give to every quad, whether specified in the data or not. Cannot be used with graph=URI (or an exception is thrown). ntriple Specify N-Triples format for input. nquad Specify N-Quads format for input (default if the $in paramater is a string). turtle Specify Turtle format for input. rdfxml Specify RDF/XML format for input (default if the $in parameter is an element). n3 Specify N3 format for input. trig Specify TriG format for input. rdfjson Specify RDF/JSON format for input. triplexml Specify `sem:triple` XML format for input, either a single `sem:triple` element or multiple elements under a root element. If you use the `triplexml` option, you cannot specify a graph. repair Specify to repair if possible, or discard individual triples that do not parse correctly. Otherwise any malformed input results in an exception.

options

Parsing options. Only one each of the base, graph, override-graph, and format (ntriple, nquad, turtle, rdfxml, rdfjson, triplexml) options is allowed. Valid options include:

base=URI
A base URI to use during parsing.
graph=URI
The graph/context value to give to quads with no explicit graph specified in the data. Cannot be used with override-graph=URI (or an exception is thrown).
override-graph=URI
The graph/context value to give to every quad, whether specified in the data or not. Cannot be used with graph=URI (or an exception is thrown).
ntriple
Specify N-Triples format for input.
nquad
Specify N-Quads format for input (default if the $in paramater is a string).
turtle
Specify Turtle format for input.
rdfxml
Specify RDF/XML format for input (default if the $in parameter is an element).
n3
Specify N3 format for input.
trig
Specify TriG format for input.
rdfjson
Specify RDF/JSON format for input.
triplexml
Specify sem:triple XML format for input, either a single sem:triple element or multiple elements under a root element. If you use the triplexml option, you cannot specify a graph.
repair
Specify to repair if possible, or discard individual triples that do not parse correctly. Otherwise any malformed input results in an exception.

Example

xquery version "1.0-ml"; 
 
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#";
declare namespace dc = "http://purl.org/dc/elements/1.1/";
declare namespace v="http://www.w3.org/2006/vcard/";

sem:rdf-parse(
<rdf:Description rdf:about="urn:isbn:006251587X">
  <dc:title>Weaving the Web</dc:title>
  <dc:creator rdf:resource="http://www.w3.org/People/Berners-Lee/card#i"/>
</rdf:Description>,
"rdfxml")	  
 
 => 
sem:triple(
  sem:iri("urn:isbn:006251587X"), 
  sem:iri("http://purl.org/dc/elements/1.1/title"), 
  "Weaving the Web")
	
sem:triple(
  sem:iri("urn:isbn:006251587X"), 
  sem:iri("http://purl.org/dc/elements/1.1/creator"), 
  sem:iri("http://www.w3.org/People/Berners-Lee/card#i"))

Example

xquery version "1.0-ml"; 
 
import module namespace sem = "http://marklogic.com/semantics" 
      at "/MarkLogic/semantics.xqy";
      
let $turtle-document := '
    @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
    @prefix dc: <http://purl.org/dc/elements/1.1/> .
    @prefix ex: <http://example.org/people/1.0/> .
  <http://www.w3.org/TR/rdf-syntax-grammar>
    dc:title "RDF/XML Syntax Specification (Revised)" ;
    ex:editor [
      ex:fullname "Dave Beckett";
      ex:homePage <http://purl.org/net/dajobe/>
    ] .'
return sem:rdf-parse($turtle-document, ("turtle", "repair") )

=>  
sem:triple(
  sem:iri("http://www.w3.org/TR/rdf-syntax-grammar"), 
  sem:iri("http://purl.org/dc/elements/1.1/title"), 
  "RDF/XML Syntax Specification (Revised)")
	
sem:triple(
  sem:iri("http://www.w3.org/TR/rdf-syntax-grammar"), 
  sem:iri("http://example.org/people/1.0/editor"),
  sem:blank("http://marklogic.com/semantics/blank/15118066541381804840"))
	
sem:triple(
  sem:blank("http://marklogic.com/semantics/blank/15118066541381804840"),
  sem:iri("http://example.org/people/1.0/fullname"), 
  "Dave Beckett")

sem:triple(
  sem:blank("http://marklogic.com/semantics/blank/15118066541381804840"),
  sem:iri("http://example.org/people/1.0/homePage"),
  sem:iri("http://purl.org/net/dajobe/"))

MarkLogic 12 Product Documentationsem:rdf-parse

Summary

Example

Example

MarkLogic 12 Product Documentation
sem:rdf-parse