processing organization bulk download using node js
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.
Is the reply below satisfactory in resolving your query?
If yes please click the 'Accept' text next to the appropriate reply. This will guide all community members who have a similar question.
Otherwise please post again offering further insight into your question.
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.