Doctrine partial fetch

test.php

<?php

		// method 1 - partial fetch
		{
			$q = $em->createQuery("select partial a.{id,title}, length(a.body) from Model\\Article a");
			$q->setMaxResults(1);
			$list   = $q->execute();
			$entity = $list[0][0];
			/*dump($entity);*/
			var_dump($entity->body); // NULL as it was not fetched
			$id = $entity->id;

			unset($entity);
		}

		// method 2 - normal fetch
		{
			$entity2 = $this->getRepository(\Model\Article::getClassName())->find($id);
			var_dump($entity2->body); // NULL wtf??
			// Cause: it already exists in IdentityMap and is not fetched again
		}