removed private query method + expose public query method that returns a node-sql instance

lib/dao-factory.js

@@ -2,6 +2,7 @@ var Utils     = require("./utils")
   , DAO       = require("./dao")
   , DataTypes = require("./data-types")
   , Util      = require('util')
+  , Sql       = require("sql")
 
 module.exports = (function() {
   var DAOFactory = function(name, attributes, options) {
@@ -519,25 +520,20 @@ module.exports = (function() {
     return this.QueryInterface.describeTable(this.tableName)
   }
 
-  // private
-
-  var query = function() {
-    var args      = Utils._.map(arguments, function(arg, _) { return arg })
-      , sequelize = this.daoFactoryManager.sequelize
+  DAOFactory.prototype.query = function() {
+    var dialect    = this.daoFactoryManager.sequelize.options.dialect
+      , instance   = new Sql(dialect).define({ name: this.tableName, model: this })
+      , attributes = this.attributes
 
-    // add this as the second argument
-    if (arguments.length === 1) {
-      args.push(this)
-    }
-
-    // add {} as options
-    if (args.length === 2) {
-      args.push({})
-    }
+    Object.keys(attributes).forEach(function(key) {
+      instance.addColumn(key, attributes[key])
+    })
 
-    return sequelize.query.apply(sequelize, args)
+    return instance
   }
 
+  // private
+
   var addOptionalClassMethods = function() {
     var self = this
     Utils._.each(this.options.classMethods || {}, function(fct, name) { self[name] = fct })