json-table-schema-validator

A validator for tabular data following the JSON Table Schema RFC available as a transform stream operating in object mode.

Usage

Given a JSON Table Schema for instance:

 var schema = {
  "fields": [
    {"name": "a", "type": "string"},
    {"name": "b", "type": "integer"},
    {"name": "c", "type": "number"},
    {"name": "d", "type": "date"}
  ]
};

one can create a validator transform stream with:

var Validator = require('json-table-schema-validator');
var v = new Validator(schema);
s.pipe(v); //s is a readable stream operating in object mode;
v.on('data', function(coercedRow){
  //do smtg with coerced row;
});
v.on('error', function(err){
  //oops validation error
});

Foreign keys support

A referenced object can be passed to the constructor to check that the values of a field are inluded into the set of value provided in the referenced Set. referenced is an object with:

• key equal to fields.name
• values equal to an ES6 Set containing all the possible values of the filed.

Tests

npm test

Licence

MIT