- Sqlite now handles concurrency with transactions

src/Common/PdoObject/SqlPdoObject.php

@@ -12,7 +12,7 @@ class SqlPdoObject extends \Ulmus\Common\PdoObject
             return $this->openTransaction();
         }
 
-        return $this->exec('SAVEPOINT transaction_'.$this->openedTransaction) !== false;
+        return $this->exec("SAVEPOINT transaction_{$this->openedTransaction}") !== false;
     }
 
     public function commit() : bool
@@ -21,16 +21,19 @@ class SqlPdoObject extends \Ulmus\Common\PdoObject
             return parent::commit();
         }
 
-        return false;
+        return $this->exec("RELEASE SAVEPOINT transaction_{$this->openedTransaction}") !== false;
     }
 
     public function rollback() : bool
     {
-        if (0 !== $this->openedTransaction) {
+        if ($this->openedTransaction > 1) {
             return $this->exec('ROLLBACK TO transaction_' . $this->openedTransaction--) !== false;
         }
+        elseif ($this->openedTransaction-- === 1) {
+            return parent::rollback();
+        }
 
-        return parent::rollback();
+        return false;
     }
 
     protected function openTransaction() : bool