Merge pull request #2419 from sheltond/master

sequelize/sequelize#2418 Don't overwrite autocommit setting for an outer transaction when using findOrCreate - closes #2418

lib/dialects/abstract/query-generator.js

@@ -1130,10 +1130,15 @@ module.exports = (function() {
     /**
      * Returns a query that starts a transaction.
      *
-     * @param  {Boolean} value A boolean that states whether autocommit shall be done or not.
-     * @return {String}        The generated sql query.
+     * @param  {Boolean} value   A boolean that states whether autocommit shall be done or not.
+     * @param  {Object}  options An object with options.
+     * @return {String}          The generated sql query.
      */
-    setAutocommitQuery: function(value) {
+    setAutocommitQuery: function(value, options) {
+      if (options.parent) {
+        return;
+      }
+
       return 'SET autocommit = ' + (!!value ? 1 : 0) + ';';
     },
 

lib/query-interface.js

@@ -712,13 +712,21 @@ module.exports = (function() {
     return this.QueryGenerator.escape(value);
   };
 
-  QueryInterface.prototype.setAutocommit = function(transaction, value) {
+  QueryInterface.prototype.setAutocommit = function(transaction, value, options) {
     if (!transaction || !(transaction instanceof Transaction)) {
       throw new Error('Unable to set autocommit for a transaction without transaction object!');
     }
 
-    var sql = this.QueryGenerator.setAutocommitQuery(value);
-    return this.sequelize.query(sql, null, { transaction: transaction});
+    options = Utils._.extend({
+      parent: options.transaction
+    }, options || {});
+
+    var sql = this.QueryGenerator.setAutocommitQuery(value, options);
+    if (sql) {
+      return this.sequelize.query(sql, null, { transaction: transaction });
+    } else {
+      return Utils.Promise.resolve();
+    }
   };
 
   QueryInterface.prototype.setIsolationLevel = function(transaction, value, options) {

lib/transaction.js

@@ -136,7 +136,7 @@ Transaction.prototype.setAutocommit = function() {
   return this
     .sequelize
     .getQueryInterface()
-    .setAutocommit(this, this.options.autocommit);
+    .setAutocommit(this, this.options.autocommit, this.options);
 };
 
 Transaction.prototype.setIsolationLevel = function() {