From 765716dbfe5731f2b49c64916ee740dd114973fd Mon Sep 17 00:00:00 2001
From: Jan Skrasek <hrach.cz@gmail.com>
Date: Thu, 29 Sep 2016 23:23:07 +0200
Subject: [PATCH] dbal mapper: do no try persist if there is nothing to persist

fixes 96eebfb1691ae5c82a2620fa0eff075a606c0396
---
 src/Mapper/Dbal/DbalMapper.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/Mapper/Dbal/DbalMapper.php b/src/Mapper/Dbal/DbalMapper.php
index 2bd49197..54e465c5 100644
--- a/src/Mapper/Dbal/DbalMapper.php
+++ b/src/Mapper/Dbal/DbalMapper.php
@@ -227,6 +227,10 @@ protected function processInsert(IEntity $entity, $data)
 
 	protected function processUpdate(IEntity $entity, $data, $primary)
 	{
+		if (empty($data)) {
+			return;
+		}
+
 		$args = ['UPDATE %table SET %set WHERE %and', $this->getTableName(), $data, $primary];
 		if ($this instanceof IPersistAutoupdateMapper) {
 			$this->processAutoupdate($entity, $args);