函数顺序在Doctrine2 Query Builder中是否重要?

时间:2015-06-11 13:06:35

标签: php mysql sql orm doctrine-orm

我有两个实体OrderShipment。每个订单都有一个货件,反之亦然。我正在尝试查询待处理的订单。以下是标准:

  • 订单已发送(而不仅仅是保存)
  • 订单尚未取消
  • 订单没有货件
  • 或订单有货
    • 但是发货尚未发送(刚刚保存)
    • 如果已发送货件,则该货件也已取消

以下是我提出的查询:

<?php

use Doctrine\ORM\EntityRepository;

class OrderRepository extends EntityRepository
{

    public function findPending($id)
    {
        return $this->createQueryBuilder('o')
            ->addSelect('s')
            ->leftJoin('MyApp\\Model\\Entity\\Shipment', 's')
            ->orderBy('o.date_sent', 'DESC')

            // Order has been sent
            ->where($qb->expr()->neq('o.date_sent',':date_sent'))
            ->setParameter('date_sent', '0000-00-00 00:00:00')

            // Order was not cancelled
            ->where($qb->expr()->eq('o.date_cancelled',':date_cancelled'))
            ->setParameter('date_cancelled', '0000-00-00 00:00:00')

            // Order does not have a shipment
            ->andWhere($qb->expr()->isNull('s.order'))

            // OR Shipment has not been sent
            ->orWhere($qb->expr()->neq('s.date_sent', ':ship_date_sent'))
            ->setParameter('ship_date_sent', '0000-00-00 00:00:00')

            // AND Shipment has not been cancelled
            ->andWhere($qb->expr()->eq('s.date_cancelled',':ship_date_cancelled'))
            ->setParameter('ship_date_cancelled', '0000-00-00 00:00:00')

            ->setMaxResults(6)
            ->getQuery()
            ->getResult();
    }
}

它似乎有效,但我没有太多数据可以测试它。我担心最后->andWhere()声明,看看货物是否没有被取消。如果我使用&#39;和&#39;,我担心它只会退回已发货且未被取消的发货订单&#34;而不是&#34;尚未发送或发送,未被取消&#34;。如果我将->andWhere()更改为->orWhere(),我认为它会返回已发送但未被取消的发货订单&#34;。

我主要关心的是查询函数的顺序如何影响查询。另外,where()只能使用一次吗?我没有看到where()andWhere()之间的区别?

如果我的问题不够清楚,请告诉我,我会更新。

提前谢谢。

更新

我已经深入挖掘并提出了这个新查询。我认为哪个有用?

public function findPending($id)
{
    $qb = $this->createQueryBuilder('o')
        ->addSelect('s')
        ->leftJoin('MyApp\\Model\\Entity\\Shipment', 's')
        ->orderBy('o.date_sent', 'DESC')

        // Order has been sent and was not cancelled
        ->where($qb->expr()->andX(
            $qb->expr()->eq('o.date_cancelled','0000-00-00 00:00:00'),
            $qb->expr()->neq('o.date_sent','0000-00-00 00:00:00')
            ))

        ->andWhere($qb->expr()->orX(
            // Order doesn't have a shipment
            $qb->expr()->isNull('s.order'),
            // OR Order has a shipment
            $qb->expr()->orX(
                // Shipment has not been sent
                $qb->expr()->eq('s.date_sent','0000-00-00 00:00:00'),
                // OR Shipment has been sent AND it was cancelled
                $qb->expr()->andX(
                    $qb->expr()->neq('s.date_sent','0000-00-00 00:00:00'),
                    $qb->expr()->eq('s.date_cancelled','0000-00-00 00:00:00')
                    )
                )
            ))

        ->setMaxResults(6)
        ->getQuery()
        ->getResult();
    return $qb;
}

1 个答案:

答案 0 :(得分:0)

是的,其中只能使用一次,所以如果(或或者)是有条件的,但可以多次使用,你应该使用,其中1 = 1