Add SqlCriteria.join(). Refactoring SqlResultCollection (add SqlResultCollection).

model/SqlResultCollection.php

@@ -0,0 +1,19 @@
+<?php
+
+class SqlResultCollection extends ArrayIterator
+{
+    private $items;
+
+    public function __construct($items)
+    {
+        $this->items = $items;
+        foreach ($items as $item) {
+            parent::append($item);
+        }
+    }
+
+    public function fetchAll()
+    {
+        return $this->items;
+    }
+}