Refactor project structure

core/src/Classes/Migration/AbstractMigration.php

@@ -0,0 +1,56 @@
+<?php
+/**
+ * Created by PhpStorm.
+ * User: Thilina
+ * Date: 8/20/17
+ * Time: 9:44 AM
+ */
+
+namespace Classes\Migration;
+
+abstract class AbstractMigration
+{
+    protected $file;
+
+    private $db;
+
+    protected $lastError;
+
+    public function __construct($file)
+    {
+        $this->file = $file;
+    }
+
+    public function up()
+    {
+        return true;
+    }
+
+    public function down()
+    {
+        return true;
+    }
+
+    protected function db()
+    {
+        if ($this->db == null) {
+            $this->db = NewADOConnection('mysqli');
+            $res = $this->db->Connect(APP_HOST, APP_USERNAME, APP_PASSWORD, APP_DB);
+        }
+        return $this->db;
+    }
+
+    public function getLastError()
+    {
+        return $this->lastError;
+    }
+
+    public function executeQuery($sql)
+    {
+        $ret = $this->db()->Execute($sql);
+        if (!$ret) {
+            $this->lastError =  $this->db()->ErrorMsg();
+        }
+        return $ret;
+    }
+}