PHP code example of steevanb / doctrine-entity-merger

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

steevanb / doctrine-entity-merger example snippets

class FooEntity
{
    protected $id;
    protected $name;
    protected $description;
}

$foo1 = $repository
    ->createQueryBuilder('foo')
    ->select('PARTIAL foo.{id, name}')
    ->where('site.id = 1')
    ->getQuery()
    ->getSingleResult();

var_dump($foo1->getDescription()); // null, that's fine, description is not in PARTIAL

$foo2 = $repository
    ->createQueryBuilder('foo')
    ->select('PARTIAL foo.{id, name, description}')
    ->where('site.id = 1')
    ->getQuery()
    ->getSingleResult();

// $foo1 is same object as $foo2, cause Doctrine know first query hydrated $foo1
// so, when you ask same entity (same id in query) with 2nd query, Doctrine will execute SQL,
// but will not hydrate a new entity
// UnitOfWork will return instance of Foo who is already hydrated, with first query
var_dump(spl_object_hash($foo1) === spl_object_hash($foo2)); // true

// but, as Doctrine return $foo1 in 2nd query, your new field description will not be defined in $foo1
var_dump($foo1->getDescription()); // null, but we want it, cause it's defined in PARTIAL 2nd query

use steevanb\DoctrineEntityMerger\QueryHint;

$foo1 = $repository
    ->createQueryBuilder('foo')
    ->select('PARTIAL foo.{id, name}')
    ->where('site.id = 1')
    ->getQuery()
    ->getSingleResult();

var_dump($foo1->getName()); // 'My name' for example
var_dump($foo1->getDescription()); // null, that's fine, description is not in PARTIAL

$foo1->setName('New name');
var_dump($foo1->getName()); // 'New name'

$foo2 = $repository
    ->createQueryBuilder('foo')
    ->select('PARTIAL foo.{id, description}')
    ->where('site.id = 1')
    ->getQuery()
    ->setHint(QueryHint::MERGE_ENTITY, true)
    ->getSingleResult();

var_dump($foo1->getName()); // 'New name', MERGE_ENTITY will not change Foo::$name value if it was already defined in another query before

var_dump($foo1->getDescription()); // 'My description'

$entityManager->getEventManager()->addEventSubscriber(
    new steevanb\DoctrineEntityMerger\EventSubscriber\EntityMergerSubscriber()
);

$entityManager->getConfiguration()->setDefaultQueryHint(
    steevanb\DoctrineEntityMerger\QueryHint\QueryHint::MERGE_ENTITY,
    true
);