graphql/lib/graphql.js

A Query Language and Runtime which can target any service.

/* @flow */
/**
 *  Copyright (c) 2015, Facebook, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  LICENSE file in the root directory of this source tree. An additional grant
 *  of patent rights can be found in the PATENTS file in the same directory.
 */

'use strict';

var _Object$defineProperty = require('babel-runtime/core-js/object/define-property')['default'];

var _Promise = require('babel-runtime/core-js/promise')['default'];

_Object$defineProperty(exports, '__esModule', {
  value: true
});

exports.graphql = graphql;

/**
 * The result of a GraphQL parse, validation and execution.
 *
 * `data` is the result of a successful execution of the query.
 * `errors` is included when any errors occurred as a non-empty array.
 */

var _languageSource = require('./language/source');

var _languageParser = require('./language/parser');

var _validator = require('./validator');

var _executorExecutor = require('./executor/executor');

var _error = require('./error');

/**
 * This is the primary entry point function for fulfilling GraphQL operations
 * by parsing, validating, and executing a GraphQL document along side a
 * GraphQL schema.
 *
 * More sophisticated GraphQL servers, such as those which persist queries,
 * may wish to separate the validation and execution phases to a static time
 * tooling step, and a server runtime step.
 */

function graphql(schema, requestString, rootObject, variableValues, operationName) {
  return new _Promise(function (resolve) {
    var source = new _languageSource.Source(requestString || '', 'GraphQL request');
    var ast = (0, _languageParser.parse)(source);
    var validationResult = (0, _validator.validateDocument)(schema, ast);
    if (!validationResult.isValid) {
      resolve({ errors: validationResult.errors });
    } else {
      resolve((0, _executorExecutor.execute)(schema, rootObject, ast, operationName, variableValues));
    }
  })['catch'](function (error) {
    return { errors: [(0, _error.formatError)(error)] };
  });
}