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