ESQ (Elasticsearch Query)

I wanted an easy way to build elasticsearch queries without having to writing lots and lots of code just for the structure of the query. For that reason I created ESQ, a very simple but powerful tool that will do all of the object creation for you.

Download

npm install esq or bower intall esq

Quick Example

Example

var ESQ = require('esq');
var esq = new ESQ();

esq.query('bool', ['must'], { match: { user: 'kimchy' } });
esq.query('bool', 'minimum_should_match', 1);

var query = esq.getQuery();

Generates

{
  "bool": {
    "must": [
      {
        "match": {
          "user": "kimchy"
        }
      }
    ],
    "minimum_should_match": 1
  }
}

In the browser

<script src="esq.js"></script>
<script>
  var esq = new ESQ();
  esq.query('bool', ['must'], { match: { user: 'kimchy' } });
  var query = esq.getQuery();
</script>

Documentation

esq.getQuery();

This will return the query at the current stage.

Example

esq.query('bool', ['must'], { match: { foo: 'bar' } });
var query = esq.getQuery();

Generates

{
  "bool": {
    "must": [
      {
        "match": {
          "foo": "bar"
        }
      }
    ]
  }
}

esq.query(str, ..., str, value);

You can pass this function as many strings as you want and you'll receive a nested object with the arguments as keys. The final argument should always be the object you want to assign to the second to last argument. This function will always return the query at its current state.

Example

esq.query('filtered', 'query', { match: { foo: 'bar' } });

Generates

{
  "filtered": {
    "query": {
      "match": {
        "foo": "bar"
      }
    }
  }
}

Array Arguments

The function also allows you to pass in an argument as an array (e.g. ['must']). This tells the function that you want that key to be an array and so it'll push the following arguments into the array.

Example

esq.query('filtered', 'query', 'bool', ['must'], { match: { 'foo': 'bar' } });

Generates

{
  "filtered": {
    "query": {
      "bool": {
        "must": [
          {
            "match": {
              "foo": "bar"
            }
          }
        ]
      }
    }
  }
}

Fluent Interface

esq.q(str, ..., str, value);

Operates as esq.query(), but returns this so that .q() can be chained fluently. Call .getQuery() at the end of the chain to get the final result.

Example

esq.q('query', 'bool', ['must'], { match: { foo: 'bar' } })
.q('query', 'bool', ['should'], { match: { baz: 'quux' } })
.getQuery();

Generates

{
  "query": {
    "bool": {
      "must": [
        {
          "match": {
            "foo": "bar"
          }
        }
      ],
      "should": [
        {
          "match": {
            "baz": "quux"
          }
        }
      ]
    }
  }
}

Tests

This module is fully tested, run the tests using mocha.

License

ormojo/esq

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