Add TraceableArraySerializer to be able to debug calls

lib/Alchemy/Phrasea/Fractal/TraceableArraySerializer.php

@@ -0,0 +1,63 @@
+<?php
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2016 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Fractal;
+
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+class TraceableArraySerializer extends ArraySerializer
+{
+    /**
+     * @var EventDispatcherInterface
+     */
+    private $dispatcher;
+
+    public function __construct(EventDispatcherInterface $dispatcher)
+    {
+        $this->dispatcher = $dispatcher;
+    }
+
+    public function collection($resourceKey, array $data)
+    {
+        /** @var GetSerializationEvent $event */
+        $event = $this->dispatcher->dispatch('fractal.serializer.collection', new GetSerializationEvent($resourceKey, $data));
+
+        $serialization = parent::collection($resourceKey, $data);
+
+        $event->setSerialization($serialization);
+
+        return $serialization;
+    }
+
+    public function item($resourceKey, array $data)
+    {
+        /** @var GetSerializationEvent $event */
+        $event = $this->dispatcher->dispatch('fractal.serializer.item', new GetSerializationEvent($resourceKey, $data));
+
+        $serialization = parent::item($resourceKey, $data);
+
+        $event->setSerialization($serialization);
+
+        return $serialization;
+    }
+
+    public function null($resourceKey)
+    {
+        /** @var GetSerializationEvent $event */
+        $event = $this->dispatcher->dispatch('fractal.serializer.null', new GetSerializationEvent($resourceKey, null));
+
+        $serialization = parent::null($resourceKey);
+
+        $event->setSerialization($serialization);
+
+        return $serialization;
+    }
+
+}