--- add migrations ---

Fix some bugs in migrations functional

Author: SergeyGrishin

lib/orm/DataBase/Table.php

@@ -1,5 +1,6 @@
 <?php
 
+
 namespace orm\DataBase;
 
 
@@ -45,10 +46,10 @@ public function migrate()
     {
         try {
             (new QueryExecutor(PdoAdapter::getInstance()
-                    ->getPdoObject()->prepare(
-                        (new Migration($this->table_fields, $this->table_name))
-                                ->buildMigrationSqlCode()), []))
-                    ->execute();
+                ->getPdoObject()->prepare(
+                    (new Migration($this->table_fields, $this->table_name))
+                        ->buildMigrationSqlCode()), []))
+                ->executeSql();
         } catch (\PDOException $e) {
             throw new MigrationException($e->getMessage());
         }

lib/orm/Query/QueryExecutor.php

@@ -96,10 +96,19 @@ public function select()
      * select|insertOrUpdate|delete). Substitute data to prepared query
      * and execute it.
      */
-    public function execute()
+    private function execute()
     {
         $this->pdo->beginTransaction();
         $this->query->execute($this->data);
     }
 
+    /**
+     * Execute pure sql query. Use this only for migrations.
+     */
+    public function executeSql()
+    {
+        $this->execute();
+        $this->pdo->commit();
+    }
+
 }