我有一个User
和Company
实体。每个User
都属于Company
。这是我的实体(缩短):
<?php
namespace App\Model\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* @ORM\Table(name="user")
*/
class User
{
/**
* @ORM\Id
* @ORM\Column(type="integer", name="user_id")
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @ORM\Column(length=200)
*/
private $email;
/**
* @ORM\ManyToOne(targetEntity="Company", inversedBy="users", fetch="EAGER")
* @ORM\JoinColumn(name="company_id", referencedColumnName="company_id", nullable=false)
*/
private $company;
// And a bunch of getters/setters
<?php
namespace App\Model\Entity;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;
/**
* @ORM\Table(name="company")
*/
class Company
{
/**
* @var int
*
* @ORM\Id
* @ORM\Column(type="integer", name="company_id", options={"unsigned":1})
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(length=100, unique=true)
*/
private $name = "";
/**
* @var Doctrine\Common\Collections\ArrayCollection
*
* @ORM\OneToMany(targetEntity="User", mappedBy="company", cascade={"persist", "remove"}, fetch="LAZY")
*/
private $users;
// getters/setters
当我测试我的生产代码时,我忘记将公司添加到公司表中。所以,当我做一个基本的$entityManager->getRepository('App/Model/Entity/User')->findAll();
以确保我的数据库正确连接时,它返回一个空数组,即使我有一个用户在那里。
我挖了一下,找到它输出的SQL,就是这样:
SELECT
t0.user_id AS user_id1,
t0.email AS email2,
t0.company_id AS company_id3,
t10.company_id AS company_id5,
t10.name AS name6 FROM user t0
INNER JOIN company t10
ON t0.company_id = t10.company_id
我意识到INNER JOIN
是我没有得到任何用户的原因。现在我好奇是什么导致Doctrine使用INNER JOIN
?是由于nullable=false
对于User实体中的公司属性还是其他什么?