From f6e4c228eb07a7b1a1a91eb287dfe5aff0e36b31 Mon Sep 17 00:00:00 2001
From: Raymond Feng <raymond@strongloop.com>
Date: Wed, 1 Apr 2015 16:25:23 -0700
Subject: [PATCH] Return isNewInstance from upsert

---
 lib/mysql.js | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/mysql.js b/lib/mysql.js
index ca54630..5e656e2 100644
--- a/lib/mysql.js
+++ b/lib/mysql.js
@@ -254,11 +254,19 @@ MySQL.prototype.updateOrCreate = MySQL.prototype.save = function (model, data, c
   sql += ' VALUES (' + fieldValues.join(', ') + ')';
   sql += ' ON DUPLICATE KEY UPDATE ' + combined.join(', ');
 
-  this.query(sql, function (err, info) {
+  this.query(sql, function(err, info) {
     if (!err && info && info.insertId) {
       data.id = info.insertId;
     }
-    callback(err, data);
+    var meta = {};
+    if (info) {
+      // When using the INSERT ... ON DUPLICATE KEY UPDATE statement,
+      // the returned value is as follows:
+      // 1 for each successful INSERT.
+      // 2 for each successful UPDATE.
+      meta.isNewInstance = (info.affectedRows === 1);
+    }
+    callback(err, data, meta);
   });
 };