MarkLogic 9 Product Documentationsem:bnode
sem:bnode( [$value as xs:anyAtomicType] ) as sem:blank
Summary
This function returns an identifier for a blank node, allowing the construction of a triple that refers to a blank node. This XQuery function backs up the SPARQL BNODE() function.
This function is a built-in.
| Parameters | |
|---|---|
| value | If provided, the same blank node identifier is returned for the same argument value passed to the function. |
Example
xquery version "1.0-ml";
import module namespace sem = "http://marklogic.com/semantics"
at "/MarkLogic/semantics.xqy";
let $person1 := sem:bnode()
let $person2 := sem:bnode()
let $t1 := sem:triple($person1,
sem:iri("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"),
sem:iri("http://xmlns.com/foaf/0.1/Person"))
let $t2 := sem:triple($person2,
sem:iri("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"),
sem:iri("http://xmlns.com/foaf/0.1/Person"))
let $t3 := sem:triple($person1,
sem:iri("http://xmlns.com/foaf/0.1/knows"), $person2) return ($t1,$t2,$t3)
=> (: returns identifiers for blank nodes :)
sem:triple(
sem:blank("http://marklogic.com/semantics/blank/3098376212503391907"),
sem:iri("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"),
sem:iri("http://xmlns.com/foaf/0.1/Person"))
sem:triple(
sem:blank("http://marklogic.com/semantics/blank/3280643260770921296"),
sem:iri("http://www.w3.org/1999/02/22-rdf-syntax-ns#type"),
sem:iri("http://xmlns.com/foaf/0.1/Person"))
sem:triple(
sem:blank("http://marklogic.com/semantics/blank/3098376212503391907"),
sem:iri("http://xmlns.com/foaf/0.1/knows"),
sem:blank("http://marklogic.com/semantics/blank/3280643260770921296"))