GHxxxxTest.php

<?php

declare(strict_types=1);

namespace Doctrine\Tests\ORM\Functional\Ticket;

use Doctrine\Tests\OrmFunctionalTestCase;

/**
 * @group GHxxxx
 */
final class GHxxxxTest extends OrmFunctionalTestCase
{
    /**
     * {@inheritDoc}
     */
    protected function setUp() : void
    {
        parent::setUp();

        $this->setUpEntitySchema([
            GHxxxxBaseClass::class,
            GHxxxxSubClass::class,
        ]);
    }

    public function testNumericDescriminatorColumn() : void
    {
        $entity = new GHxxxxSubClass();
        $entity->value = 'test';
        $this->_em->persist($entity);
        $this->_em->flush();
        $this->_em->clear();

        $repository = $this->_em->getRepository(GHxxxxSubClass::class);
        $hydrated = $repository->find($entity->id);

        self::assertSame('test', $hydrated->value);
    }
}

/**
 * @Entity()
 * @Table(name="ghxxxx")
 * @InheritanceType("JOINED")
 * @DiscriminatorColumn(name="discr", type="integer")
 * @DiscriminatorMap({
 *     1 = GHxxxxBaseClass::class,
 *     2 = GHxxxxSubClass::class
 * })
 */
class GHxxxxBaseClass
{
    /**
     * @Id @GeneratedValue
     * @Column(type="integer")
     */
    public $id;
}

/**
 * @Entity()
 */
class GHxxxxSubClass extends GHxxxxBaseClass
{
    /**
     * @Column(name="test", type="string")
     * @var string
     */
    public $value;
}