Doctrine 2 ManyToOne有多个joinColumns

Question

我正在尝试根据product_item表中的productId和toolboxItemId选择product_item_sortorder表中的匹配行.

在适用于给定productId的普通SQL中:

SELECT pi.*, pis.* FROM product_item pi
LEFT JOIN product_item_sortorder pis
    ON pi.productId = pis.productId
    AND pi.toolboxItemId = pis.toolboxItemId
WHERE pi.productId = 6

我为它写了DQL如下:

$this->_em->createQuery(
    'SELECT pi
    FROM Entities\ProductItem pi
    LEFT JOIN pi.sequence s
    WHERE pi.product = ?1'
);

如果输出$ query-> getSQL(),我会得到以下SQL:

SELECT p0_.id AS id0, p0_.productId AS productId1, p0_.priceGroupId AS priceGroupId2, p0_.toolboxItemId AS toolboxItemId3, p0_.levelId AS levelId4, p0_.parentId AS parentId5, p0_.productId AS productId6, p0_.toolboxItemId AS toolboxItemId7 FROM product_item p0_ LEFT JOIN product_item_sortorder p1_ ON p0_.productId = p1_. AND p0_.toolboxItemId = p1_. WHERE p0_.productId = ? ORDER BY p0_.id ASC

如您所见,找不到referencedColumnNames:

LEFT JOIN product_item_sortorder p1_ ON p0_.productId = p1_. AND p0_.toolboxItemId = p1_. 

product_item表的详细信息:

+-----+-----------+---------------+
| id  | productId | toolboxItemId |
+-----+-----------+---------------+
| 467 |         1 |             3 |
| 468 |         1 |            10 |
| 469 |         1 |            20 |
| 470 |         1 |             4 |
| 471 |         1 |            10 |
+-----+-----------+---------------+

product_item_sortorder表的详细信息:

+-----+-----------+---------------+----------+
| id  | productId | toolboxItemId | sequence |
+-----+-----------+---------------+----------+
| 452 |         1 |             3 |        1 |
| 457 |         1 |             4 |        6 |
| 474 |         1 |            20 |        4 |
+-----+-----------+---------------+----------+

ProductItem实体

<?php
/**
 * @Entity(repositoryClass="Repositories\ProductItem")
 * @Table(name="product_item")
 */
class ProductItem
{
    ...

    /**
     * @ManyToOne(targetEntity="ProductItemSortorder")
     * @JoinColumns({
     *      @JoinColumn(name="productId", referencedColumnName="productId"),
     *      @JoinColumn(name="toolboxItemId", referencedColumnName="toolboxItemId")
     * })
     */
    protected $sequence;

    ...
?>

ProductItemSortOrder实体

<?php
/**
 * @Entity(repositoryClass="Repositories\ProductItemSortorder")
 * @Table(name="product_item_sortorder")
 */
class ProductItemSortorder
{
    ...

    /**
     * @ManyToOne(targetEntity="Product")
     * @JoinColumn(name="productId", referencedColumnName="id")
     */
    protected $product;

    /**
     * @ManyToOne(targetEntity="ToolboxItem")
     * @JoinColumn(name="toolboxItemId", referencedColumnName="id")
     */
    protected $toolboxItem;

    ...
}
?>

Answer 1

检查此示例中的复合连接列 https://github.com/doctrine/doctrine2/blob/2.0.6/tests/Doctrine/Tests/Models/Navigation/NavPhotos.php

Answer 2

你的映射是严重错误的。您在两端都使用 ManyToOne，这怎么可能？您将两个关联定义为“拥有”端，没有映射者或反转者（请参阅“关联映射”章节）。并且您正在使用一个关联的连接列来映射到另一个实体中的许多字段。我想你想做点别的事情，你能准确描述你的用例吗？