jsonld-context-infer

Infer a JSON-LD @context from a readable stream operating in object mode.

Type infered

• String -> xsd:string
• Number: a number including floating point numbers -> xsd:double
• integer -> xsd:integer
• date (in ISO6801 format YYYY-MM-DD) -> xsd:date
• dateTime (in ISO8601 format of YYYY-MM-DDThh:mm:ssZ) -> xsd:dateTime
• Boolean: -> xsd:boolean

Usage

From a readable stream in object mode emitting for instance:

{ a: 1, b: 2.3 }
{ a: 2, b: 3.6 }

The script

var jsonLdContextInfer = require('jsonld-context-infer');

jsonLdContextInfer(s, function(err, schema, scores){
   console.log(schema, scores);
});

will outputs:

schema:

{
  "@context": {
    xsd: "http://www.w3.org/2001/XMLSchema#",
    a: { "@id": "_:a", "@type": "xsd:integer" },
    b: { "@id": "_:b", "@type": "xsd:double" }
  }
}

scores:

{
  a: { "xsd:string": 0, "xsd:double": 2, "xsd:integer": 2, "xsd:date": 0, "xsd:dateTime": 0, "xsd:boolean": 1 },
  b: { "xsd:string": 0, "xsd:double": 2, "xsd:integer": 0, "xsd:date": 0, "xsd:dateTime": 0, "xsd:boolean": 0 }
}

API

jsonLdContextInfer(readableStream, [options], callback)

options :

• nSample: if specified only the nSample first rows of the source will be used to infer the types otherwise all the rows will be used

Tests

npm test

License

MIT