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XQuery op:graph-col

MarkLogic 12 Product Documentation
op.graphCol

op.graphCol(
   name as String
) as columnIdentifier

Summary

Identifies the graph for a triple providing one or more columns for a row. You pass the graph column as a system column parameter to the op.pattern function.

Parameters
name The name to use for the graph column.

Example


const op = require('/MarkLogic/optic');
// prefixer is a factory for sem:iri() constructors in a namespace
const resource   = op.prefixer('http://dbpedia.org/resource/');
const foaf   = op.prefixer('http://xmlns.com/foaf/0.1/');
const onto = op.prefixer('http://dbpedia.org/ontology/');

const person = op.col('person');

const Plan =
    op.fromTriples([
        op.pattern(person, onto('birthPlace'), resource('Brooklyn')),
        op.pattern(person, foaf("name"), op.col("name"), op.graphCol('graph-id'))
    ])
    .select();
Plan.result();

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