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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | 14x 5x 1x 1x 2x 2x 1x 1x 1x 1x 14x 30614x 22553x 3961x 4099x 4099x 2540x 1559x 1559x 1x | import * as rdfjs from "@rdfjs/types";
import * as rdflib from "rdflib";
import { dataFactory } from "./data-factory";
/**
* Converts an rdflib term to an RDFJS term.
* @param term The rdflib term to convert.
* @returns The corresponding RDFJS term.
*/
export const toRdfjsTerm = (term: rdflib.Node): rdfjs.Term => {
switch (term.termType) {
case 'NamedNode':
return dataFactory.namedNode(term.value);
case 'BlankNode':
return dataFactory.blankNode(term.value);
case 'Literal': {
const literal = term as rdflib.Literal;
if (literal.language) {
return dataFactory.literal(term.value, literal.language);
} else if (literal.datatype) {
return dataFactory.literal(term.value, dataFactory.namedNode(literal.datatype.value));
} else E{
return dataFactory.literal(term.value);
}
}
default: {
throw new Error(`Unsupported RDF termType: ${term.termType}`);
}
}
}
/**
* Converts an RDFJS term to an rdflib term adding compareTerm methods required by rdflib serializers.
* @param term The RDFJS term to convert.
* @returns The corresponding rdflib term.
*/
export const toRdflibTerm = (term: rdfjs.Term) => {
switch (term.termType) {
case 'NamedNode':
return rdflib.namedNode(term.value);
case 'BlankNode':
return rdflib.blankNode(term.value);
case 'Literal': {
const literal = term as rdfjs.Literal;
if (literal.language) {
return rdflib.lit(term.value, literal.language);
} else if (literal.datatype) {
return rdflib.lit(term.value, undefined, rdflib.namedNode(literal.datatype.value));
} else E{
return rdflib.lit(term.value);
}
}
default: {
throw new Error(`Unsupported RDF termType: ${term.termType}`);
}
}
}; |