lucenequery

Convert a mongo query like object to lucene query string

Install

npm i lucene-querystring

Example

var lucene-querystring = require('lucene-querystring');
lucene-querystring.build({
    name: 'leo'
});

> name:leo

Baisc Query

• fiter with default and operator

  var test = {
    name: 'leo',
    status: 'A'
  };
  
  var q = luceneQueryString.build(test);
  assert.equal(q, 'name:leo AND status:A');
  

• in query item in a array

  var test = {
    id: [1,2,3]
  };
  
  var q = luceneQueryString.build(test);
  assert.equal(q, 'id:(1 OR 2 OR 3)');
  

• 'range' query like from end

  var test = {
      id: {
          $gt: 100,
          $lt: 1000
      }
  };
  
  var q = luceneQueryString.build(test);
  assert.equal(q, 'id:[ 100 TO 1000 ]');
  

• or query

  var test = {
      $or: [{
          id: 100
      },{
          id: 10
      }]
  };
  
  var q = luceneQueryString.build(test);
  assert.equal(q, 'id:100 OR id:10');
  

• null or not null

  var test = {
      name: {
          "$null": false
      },
  };
  
  var q = luceneQueryString.build(test);
  assert.equal(q, 'name:[* TO *]');
  

Complex query

• complex or query

  var test = {
      $or: [{
          $and:[{
              id:1
          },{
              num:1
          }]
      },{
          $and:[{
              id:2
          },{
              num:2
          }]
      }]
  };
  
  var q = luceneQueryString.build(test);
  assert.equal(q, '(id:1 AND num:1) OR (id:2 AND num:2)');
  

• complex and query

  var test = {
      $and: [{
          $or: [{
              id:1
          },{
              id:2
          }]
      },{
          $or: [{
              num:1
          },{
              num:2
          }]
      }]
  };
  
  var q = luceneQueryString.build(test);
  assert.equal(q, '(id:1 OR id:2) AND (num:1 OR num:2)');
  

Others

for other query please checkout and find in the test case.

Test

npm test will run all test case in test folder