- Fixed transactions in SQLite

src/Common/PdoObject/SqlPdoObject.php

@@ -8,8 +8,8 @@ class SqlPdoObject extends \Ulmus\Common\PdoObject
 
     public function beginTransaction(): bool
     {
-        if ( 0 === ++$this->openedTransaction ) {
-            return parent::beginTransaction();
+        if ( 0 === $this->openedTransaction++ ) {
+            return $this->openTransaction();
         }
 
         return $this->exec('SAVEPOINT transaction_'.$this->openedTransaction) !== false;
@@ -32,4 +32,9 @@ class SqlPdoObject extends \Ulmus\Common\PdoObject
 
         return parent::rollback();
     }
+
+    protected function openTransaction() : bool
+    {
+        return parent::beginTransaction();
+    }
 }