- First draft of current WIP

src/Query/OrderBy.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Ulmus\Query;
+
+class OrderBy extends Fragment {
+    public int $order = 70;
+
+    public array $orderBy = [];
+
+    public function set(array $order) : self
+    {
+        $this->orderBy = $order;
+        return $this;
+    }
+
+    public function add(string $field, ? string $direction = null) : self
+    {
+        $this->orderBy[] = [ $field, $direction ];
+        return $this;
+    }
+
+    public function render() : string
+    {
+        $list = array_map(function($item) {
+            list($field, $direction) = $item;
+            return $field . ( $direction ? " $direction" : "" );
+        }, $this->orderBy);
+
+        return $this->renderSegments([
+            'ORDER BY', implode(", ", $list)
+        ]);
+    }
+
+}