Lucene Query Parser for Javascript created using PEG.js
npm install lucene-queryparserjavascript
var parser = require('lucene-queryparser');
// return the expression tree
var results = parser.parse('title:"The Right Way" AND text:go');
console.log(results['left']['field']); // title
console.log(results['left']['term']); // The Right Way
console.log(results['operator']); // AND
console.log(results['right']['field']); // text
console.log(results['right']['term']); // go
`
A slightly more complicated example:
`javascript
var parser = require('lucene-queryparser');
// return the expression tree
var results = parser.parse('test AND (foo OR bar)');
console.log(results['left']['term']); // test
console.log(results['operator']); // AND
// the grouped expression in parentheses becomes it's own nested node
var rightNode = results['right'];
console.log(rightNode['left']['term']); // foo
console.log(rightNode['operator']); // OR
console.log(rightNode['right']['term']); // bar
`
Installation
$3
The library is available as an npm module.
To install, run:
`
npm install lucene-queryparser
`
Unit Tests
Unit tests are built with Jasmine.
$3
To run the unit tests on the command line, using node:
`
npm test
``