Imposta LIMIT con doctrine 2?

Question

Ho provato a scrivere una query (con sottoquery) ma non so come impostare un limite nella sottoquery. La mia domanda:

$query_ids = $this->getEntityManager() 
     ->createQuery(
     "SELECT e_.id 
     FROM MuzichCoreBundle:Element e_ 
     WHERE [...] 
     GROUP BY e_.id") 
    ->setMaxResults(5) 
    ; 

$query_select = "SELECT e 
     FROM MuzichCoreBundle:Element e 
     WHERE e.id IN (".$query_ids->getDql().") 
     ORDER BY e.created DESC, e.name DESC" 
    ; 

$query = $this->getEntityManager() 
     ->createQuery($query_select) 
     ->setParameters($params) 
    ; 

Ma -> setMaxResults (5) non funziona. Nessun 'LIMIT' nella query SQL. Possiamo fare LIMIT semplice con la dottrina 2?

Answer 1

Il tuo setMaxResults (limite $) deve essere impostato sull'oggetto.

ad es.

$query_ids = $this->getEntityManager() 
    ->createQuery(
    "SELECT e_.id 
    FROM MuzichCoreBundle:Element e_ 
    WHERE [...] 
    GROUP BY e_.id") 
; 
$query_ids->setMaxResults($limit); 

Answer 2

$query_ids = $this->getEntityManager() 
     ->createQuery(
     "SELECT e_.id 
     FROM MuzichCoreBundle:Element e_ 
     WHERE [...] 
     GROUP BY e_.id") 
    ->setMaxResults(5) 
    ->setMaxResults($limit) 
    ; 

QUI nella seconda query deve essere superato il risultato della prima query ..

$query_select = "SELECT e 
     FROM MuzichCoreBundle:Element e 
     WHERE e.id IN (".$query_ids->getResult().") 
     ORDER BY e.created DESC, e.name DESC" 
    ; 


$query = $this->getEntityManager() 
     ->createQuery($query_select) 
     ->setParameters($params) 
     ->setMaxResults($limit); 
    ; 

$resultCollection = $query->getResult(); 

Answer 3

$limit=5; // for exemple 

$query = $this->getDoctrine()->getEntityManager()->createQuery(
      '// your request') 

->setMaxResults($limit); 

$results = $query->getResult(); 

// Done 

Answer 4

Io uso Doctrine\ORM\Tools\Pagination\Paginator per questo, e funziona perfettamente (dottrina 2.2) .

$dql = "SELECT p, c FROM BlogPost p JOIN p.comments c"; 
$query = $entityManager->createQuery($dql) 
         ->setFirstResult(0) 
         ->setMaxResults(10); 

$paginator = new Paginator($query, $fetchJoinCollection = true); 

Answer 5

$qb = $this->getDoctrine()->getManager()->createQueryBuilder(); 
$qb->select('p') ->from('Pandora\UserBundle\Entity\PhoneNumber', 'p'); 
$qb->where('p.number = :number'); 
$qb->OrWhere('p.validatedNumber=:number'); 
$qb->setMaxResults(1); 
$qb->setParameter('number',$postParams['From']); 
$result = $qb->getQuery()->getResult(); 
$data=$result[0];