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namespace App\Entities;

use Doctrine\ORM\Mapping as ORM;
use Kdyby\Doctrine\Entities\BaseEntity;
use Kdyby\Money\Currency;
use Kdyby\Money\Money;

/**
 * @ORM\Entity
 * @ORM\Table(name="test_base")
 * @ORM\InheritanceType("SINGLE_TABLE")
 * @ORM\DiscriminatorColumn(name="type", type="string")
 * @ORM\DiscriminatorMap({"test_1" = "Test1", "test_2" = "Test2"})
 */
abstract class Test extends BaseEntity {

    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue
     * @var integer
     */
    protected $id;

    /**
     * @ORM\Column(type="money", options={"currency":"currency"})
     * @var Money
     */
    protected $amount;

    /**
     * @ORM\ManyToOne(targetEntity="Kdyby\Money\Currency")
     * @ORM\JoinColumn(nullable=false, referencedColumnName="code")
     * @var Currency
     */
    protected $currency;

}

/**
 * @ORM\Entity
 */
class Test1 extends Test {
}

/**
 * @ORM\Entity
 */
class Test2 extends Test {
}

/**
 * @ORM\Entity
 * @ORM\Table(name="test_rel")
 */
class ClassWithRelation extends BaseEntity {

    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue
     * @var integer
     */
    protected $id;

    /**
     * @ORM\OneToOne(targetEntity="App\Entities\Test")
     * @ORM\JoinColumn(nullable=true)
     * @var Test
     */
    protected $test;

}


var_dump($this->em->find(ClassWithRelation::class, 1)->test->amount); // result is int
var_dump($this->em->find(Test1::class, 1)->amount); // result is Money

[Doctrine\ORM\Mapping\MappingException]                                                                                             
  Entity Listener "Kdyby\DoctrineMoney\Mapping\MoneyObjectHydrationListener" declared on "MyClassWithMoneyField has no method "Doctrine\ORM\Event::postLoadRelations".