How to fetch class instead of array in Doctrine 2 - php

Question

I am able to fetch my data from database by using this structure:
$user = $this->getDoctrine()
->getRepository('AcmeDemoBundle:Emails')
->find(8081);
When I do that, I am able to get my data like this:
$user->getColumnNameHere();
Basically I am able to use Entity Class.
But if I want to use QueryBuilder instead of find I am only getting associative arrays.
$product->createQueryBuilder('p')
->setMaxResults(1)
->where('p.idx = :idx')
->select('p.columnNameHere')
->setParameter('idx', 8081)
->orderBy('p.idx', 'DESC')
->getQuery();
$product = $query->getResult();
$product returnds as array. Is it possible to fetch it withj Entity Managaer Class? If yes, how?
I digg the documentation but it seems not possible or not exist in the doc or I'm just blind :)

Answer 1

Yes you can, usually using:
$repository
->createQueryBuilder('p')
->getQuery()
->execute()
;
This should return you an array of entities.
If you want to get a single entity result, use either getSingleResult or getOneOrNullResult:
$repository
->createQueryBuilder('p')
->getQuery()
->getOneOrNullResult()
;
Warning: These method can potentially throw NonUniqueResultException.
Edit: Ok, so the question was about partial objects: http://docs.doctrine-project.org/en/latest/reference/partial-objects.html

Answer 2

you can get an object instead of array by using "Partial Objects".
here is a tested example with DoctrineORM 2.2.2:
// create query builder
// $em is the EntityManager
$qb = $em->createQueryBuilder();
// specify the fields to fetch (unselected fields will have a null value)
$qb->select ('partial p.{id,pubDate,title,summary}')
->from ('Project\Entity\Post', 'p')
->where ('p.isActive = 1')
->orderBy ('p.pubDate', 'desc');
$q = $qb->getQuery();
$result = $q->getResult();
var_dump($result); // => object

Answer 3

If you wish to return an object from your original query:
$product->createQueryBuilder('p')
->setMaxResults(1)
->where('p.idx = :idx')
->select('p.columnNameHere')
->setParameter('idx', 8081)
->orderBy('p.idx', 'DESC')
->getQuery();
$product = $query->getResult();
Remove this line
->select('p.columnNameHere')
As soon as you use select, it will return an array...

Answer 4

getResult() method returns a collection (an array) of entities. Use getSingleResult() if you're going to fetch only one object.
EDIT:
Oh, I just noticed that you want to fetch a single field of a single object. Use getSingleScalarResult() as #Florian suggests.