Symfony2 how to get entity alias in repository - symfony

Question

i would like to write some DQL query in my entity repository function but instead of haroding entity alias into DQL i would like to get actual entity alias from repository.
my repository:
/**
* TrackingRepository
*
* This class was generated by the Doctrine ORM. Add your own custom
* repository methods below.
*/
class TrackingRepository extends EntityRepository
{
public function test()
{
$dql = 'SELECT * FROM MyBundle:Tracking';
// i would like to call something like this:
// $dql = 'SELECT * FROM ' . $this->getEntityAlias;
$query = $this->getEntityManager()->createQuery($dql);
...
}
}
is this somehow possible?

Answer 1

You can get the entity class with $this->getClassName() in your repository :
class TrackingRepository extends EntityRepository
{
public function test()
{
$dql = 'SELECT t FROM ' . $this->getClassName() . ' t';
$query = $this->getEntityManager()->createQuery($dql);
...
}
}

Answer 2

class TrackingRepository extends EntityRepository
{
public function test()
{
$dql = 'SELECT t.property1,t.property2,t.property3,t.property4 FROM MyBundle:Tracking t';
// i would like to call something like this:
// $dql = 'SELECT * FROM ' . $this->getEntityAlias;
$query = $this->getEntityManager()->createQuery($dql);
...
}
}

Answer 3

What kind of query you want to execute? Are you realy need DQL? There are other ways to achive execute complex query, please consider:
Repository findBy($criteria):
public function test()
{
$this-> findBy($criteria);
}
For more complex queries you can also use:
Criteria and matching:
use Doctrine\Common\Collections\Criteria;
//
public function test()
{
$criteria = Criteria::create()
->where(Criteria::expr()->eq('sth', 'val'))
// more criteria here
$result = $this->matching($criteria);
}
Doctrine's Query Builder
Or even Query Builder with specific criteria expressions:
public function test()
{
$qb = $er->createQueryBuilder('p');
$qb
->where($qb->expr()->andx(
$qb->expr()->in('p', '?1'),
$qb->expr()->isNotNull('p.someField')
))
->setParameter(1, $someValue);
$result = $this->matching($criteria);
}