With the Owlin query validator you can validate the Owlin query language.
You can use queryvalidator.js as a Nodejs module.
var validator = require("owlin-query-validator")
var query = "Apple AND Samsung NOT Nokia"
validator.validate(query)
You can import queryvalidator.py in Python.
import queryvalidator
query = "Apple AND Samsung NOT Nokia"
queryvalidator.validate(query)
You can include queryvalidator.js as a Javascript library.
var query = "Apple AND Samsung NOT Nokia";
validate(query);