Hi guys, i would like to process this file (OpenPermID-bulk-organization-20191124_084723) using node js.
i have just created a node js command to download and uncompress gz files.
But, i can't be able to process that file.
I tried using N3 with/without streams...
Hello @gelordi,
Thank you for your participation in the forum.
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Thanks,
-AHS
I have used the TTL file with this code.
const N3 = require('n3');
const fs = require('fs')
const parser = new N3.Parser(),
rdfStream = fs.createReadStream('OpenPermID-bulk-organization-20191201_084716.ttl');
parser.parse(rdfStream, console.log);
It showed this error:
null Quad {
subject: NamedNode { id: 'https://permid.org/1-5000487228' },
predicate:
NamedNode { id: 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type' },
object:
NamedNode { id: 'http://permid.org/ontology/organization/Organization' },
graph: DefaultGraph { id: '' } }
{ Error: Undefined prefix "xsd:" on line 10.
at N3Parser._error (C:\node_modules\n3\lib\N3Parser.js:845:15)
at N3Parser._readEntity (C:\node_modules\n3\lib\N3Parser.js:188:47)
at N3Parser._completeLiteral (C:\node_modules\n3\lib\N3Parser.js:517:29)
at N3Parser._readDataTypeOrLang (C:\node_modules\n3\lib\N3Parser.js:503:17)
at C:\node_modules\n3\lib\N3Parser.js:995:127
at N3Lexer._tokenizeToEnd (C:\node_modules\n3\lib\N3Lexer.js:382:7)
at ReadStream.<anonymous> (C:\node_modules\n3\lib\N3Lexer.js:524:22)
at ReadStream.emit (events.js:189:13)
at addChunk (_stream_readable.js:284:12)
at readableAddChunk (_stream_readable.js:261:13)
context:
{ token: { line: 10, type: 'type', value: 'string', prefix: 'xsd' },
line: 10,
previousToken: { line: 10, type: 'literal', value: 'Canada\n', prefix: '' } } }
The problem can be solved by adding "@prefix xsd: <http://www.w3.org/2001/XMLSchema#>; ." at the beginning of the TTL file.
Please confirm the problem. Then I can contact the Open PermID support team to verify it.
