Doctrine 2.1其中外键id =？,编辑:在Doctrine 2.2中修复

Question

我在这里看到了很多答案,这些答案与Doctrine 2.1中严重缺乏功能有关,这可能是OOP正确性胜过关系理智的结果.

我有两个表与多对一的关系,文章和成员.会员可以发表许多文章.拥有方的注释是

/**
 * @var \Member
 * @ORM\ManyToOne(targetEntity="Member")
 * @ORM\JoinColumns({
 *   @ORM\JoinColumn(name="member_id", referencedColumnName="id")
 * })
 */
 private $member;

我想获得成员6的所有活动文章,这是一个简单的SQL查询:

SELECT * FROM mbr_article 
   WHERE active = 1 AND member_id = 6 
   ORDER BY article_id DESC

我最终得到的是

$rep = $this->getDoctrine()->getRepository('SMWMemberBundle:Article');
$q = $rep->createQueryBuilder('a')
     ->leftJoin('a.member','m')    
     ->where('m.id = ?1')
     ->andWhere('a.active = 1')
     ->orderBy('a.id', 'DESC')
     ->setParameter(1, $id)    
     ->getQuery();

哪个产生了

SELECT m0_.id AS id0, m0_.active AS active1, m0_.update_time AS update_time2,
       m0_.content AS content3, m0_.member_id AS member_id4 
   FROM mbr_article m0_ 
   LEFT JOIN mbr_member m1_ ON m0_.member_id = m1_.id 
   WHERE m1_.id = ? AND m0_.active = 1 
   ORDER BY m0_.id DESC

哪个工作,可能不会慢很多,但不需要JOIN,因为我已经有了Member对象.当我以另一种方式尝试时,我得到的所有文章不仅仅是活跃的文章.

我已经看过诸如你可以从Doctine2中的对象获取外键而不加载该对象的响应吗？getEntityIdentifier在我可以说的2.2中使用和提及改进IDENTITY(member).

在Doctrine 2.1中有没有合理的方法呢？增强是否允许andWhere('IDENTITY(member) = ?')在查询构建器中使用？

编辑:

感谢@Ocramius, - > where('IDENTITY(a.member)=？1')在Doctrine 2.2中工作

Answer 1

IDENTITY适用于Doctrine 2.2中查询构建器生成的WHERE子句,例如.

$q = $rep->createQueryBuilder('a')
    ->where('IDENTITY(a.member) = ?1')
    ->andWhere('a.active = 1')
    ->orderBy('a.id', 'DESC')
    ->setParameter(1, $id)    
    ->getQuery();

生成以下SQL:

SELECT m0_.id AS id0, m0_.active AS active1, m0_.update_time AS update_time2, 
       m0_.content AS content3, m0_.member_id AS member_id4 
    FROM mbr_article m0_ 
    WHERE m0_.member_id = ? AND m0_.active = 1 
    ORDER BY m0_.id DESC