Question

我很困惑，花了2天时间找到这个问题的答案而没有。我已经有5张桌子了

语言 - ＆gt; id，iso_code
I18n_Entity - ＆gt; ID
I18n_String - ＆gt; id，i18n_entity_id，language_id，text
产品 - ＆gt; id，i18n_entity_id（唯一）
类别 - ＆gt; id，i18n_entity_id（唯一）

我需要做两种方法

getProductByName（语言$ language，$ name）;

因此，用于此目的的普通PostgreSQL查询是：

SELECT p.*, i18s.text
FROM product as p
INNER JOIN I18n_String AS i18s ON i18s.i18n_entity_id = p.i18n_entity_id AND i18s.language_id = :language_id
WHERE i18s.text = :name

getCategoryByName（语言$ language，$ name）;

SELECT c.*, i18s.text
FROM category as c
INNER JOIN I18n_String AS i18s ON i18s.i18n_entity_id = c.i18n_entity_id AND i18s.language_id = :language_id
WHERE i18s.text = :name

我知道加入可以通过INNER JOIN i18n_Entity作为i18e ON i18e.id = p.i18n_entity_id，但这是不必要的。

问题是：可以用学说完成，如果是的话，如何做正确的注释和dql？

product.php

namespace Application\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * Product
 *
 * @ORM\Table(name="product", uniqueConstraints={@ORM\UniqueConstraint(name="product_i18n_entity_id_unique", columns={"i18n_entity_id"})})
 * @ORM\Entity
 */
class Product {
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="integer", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="SEQUENCE")
     * @ORM\SequenceGenerator(sequenceName="product_id_seq", allocationSize=1, initialValue=1)
     */
    private $id;

    /**
     * @var \Application\Entity\I18nEntity
     *
     * @ORM\ManyToOne(targetEntity="Application\Entity\I18nEntity")
     * @ORM\JoinColumns({
     *   @ORM\JoinColumn(name="i18n_entity_id", referencedColumnName="id")
     * })
     */
    private $i18nEntity;
    ...

i18nEntityId.php

<?php

namespace Application\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * I18nEntity
 *
 * @ORM\Table(name="i18n_entity", indexes={@ORM\Index(name="i18n_entity_status_index", columns={"status"})})
 * @ORM\Entity
 */
class I18nEntity {
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="bigint", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="SEQUENCE")
     * @ORM\SequenceGenerator(sequenceName="i18n_entity_id_seq", allocationSize=1, initialValue=1)
     */
    private $id;
    ...

i18nString.php

<?php

namespace Application\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * I18nString
 *
 * @ORM\Table(name="i18n_string", uniqueConstraints={@ORM\UniqueConstraint(name="i18n_string_language_id_entity_id_uniq", columns={"language_id", "i18n_entity_id"})}, indexes={@ORM\Index(name="i18n_string_language_id_idx", columns={"language_id"}), @ORM\Index(name="i18n_string_entity_id_idx", columns={"i18n_entity_id"})})
 * @ORM\Entity
 */
class I18nString {
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="bigint", nullable=false)
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="SEQUENCE")
     * @ORM\SequenceGenerator(sequenceName="i18n_string_id_seq", allocationSize=1, initialValue=1)
     */
    private $id;

    /**
     * @var \Application\Entity\I18nEntity
     *
     * @ORM\ManyToOne(targetEntity="Application\Entity\I18nEntity")
     * @ORM\JoinColumns({
     *   @ORM\JoinColumn(name="i18n_entity_id", referencedColumnName="id")
     * })
     */
    private $i18nEntity;
    ...

Doctrine 2使用四个表连接两个表，第三个表

0 个答案: