<commit_before>import {EventEmitter} from 'events';
import Promise from 'bluebird';
import _ from 'lodash';
import type from 'type-of';
import Database from './Database';
import Schema from './Schema';
import QueryParser from './QueryParser';
import QueryCompiler from './QueryCompiler';

class Collection extends EventEmitter {

  /**
   * Constructs a new Collection instance.
   * @param {Database} db reference to the parent database.
   * @param {string} name the name of the collection.
   * @param {Object} [schema] the schema definition of the collection.
   * @throws {TypeError} if arguments are of invalid type
   * @constructor
   */
  constructor(db: Database, name: string, schema: ?Object) {
    // setup EventEmitter
    super();
    this.setMaxListeners(999);

    // validate arguments
    if (_.isNull(schema)) {
      throw new TypeError('Invalid schema argument; null is not allowed');
    }

    // handle optional arguments
    schema = schema || {};

    this.db = db;
    this.name = name;
    this.schema = new Schema(schema);
    this.parser = new Collection.QueryParser(this.name, this.schema);
    this.compiler = new Collection.QueryCompiler(this.name, this.schema);
  }

  /**
   * Reverse engineers the collection's schema from metadata retrieved from the database.
   * This function will update the collection's schema.
   * @param {Function<Error>} [callback] an optional callback function.
   * @return {Promise}
   */
  reverseEngineer(callback: ?Function): Promise {
    return Promise.resolve().nodeify(callback);
  }

  /**
   * Registers the collection to the database, e.g. creates table in MySQL.
   * @param {string} [name] optional collection name to register in database.
   * @param {Function<Error>} [callback] an optional callback function.
   * @return {Promise}
   */
  register(name: string | ?Function, callback: ?Function): Promise {
    // validate arguments
    if (_.isNull(name)) {
      throw new TypeError('Invalid name argument; null is not allowed');
    }<commit_msg>Bugfix: invalid QueryCompiler + QueryParser reference<commit_after>import {EventEmitter} from 'events';
import Promise from 'bluebird';
import _ from 'lodash';
import type from 'type-of';
import Database from './Database';
import Schema from './Schema';
import QueryParser from './QueryParser';
import QueryCompiler from './QueryCompiler';

class Collection extends EventEmitter {

  /**
   * Constructs a new Collection instance.
   * @param {Database} db reference to the parent database.
   * @param {string} name the name of the collection.
   * @param {Object} [schema] the schema definition of the collection.
   * @throws {TypeError} if arguments are of invalid type
   * @constructor
   */
  constructor(db: Database, name: string, schema: ?Object) {
    // setup EventEmitter
    super();
    this.setMaxListeners(999);

    // validate arguments
    if (_.isNull(schema)) {
      throw new TypeError('Invalid schema argument; null is not allowed');
    }

    // handle optional arguments
    schema = schema || {};

    this.db = db;
    this.name = name;
    this.schema = new Schema(schema);
    this.parser = new QueryParser(this.name, this.schema);
    this.compiler = new QueryCompiler(this.name, this.schema);
  }

  /**
   * Reverse engineers the collection's schema from metadata retrieved from the database.
   * This function will update the collection's schema.
   * @param {Function<Error>} [callback] an optional callback function.
   * @return {Promise}
   */
  reverseEngineer(callback: ?Function): Promise {
    return Promise.resolve().nodeify(callback);
  }

  /**
   * Registers the collection to the database, e.g. creates table in MySQL.
   * @param {string} [name] optional collection name to register in database.
   * @param {Function<Error>} [callback] an optional callback function.
   * @return {Promise}
   */
  register(name: string | ?Function, callback: ?Function): Promise {
    // validate arguments
    if (_.isNull(name)) {
      throw new TypeError('Invalid name argument; null is not allowed');
    }
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