延迟加载属性未在 Doctrine 2.0 中加载

Lazy-loading properties not loading in Doctrine 2.0(延迟加载属性未在 Doctrine 2.0 中加载)

问题描述

我正在使用 PHP 和 Doctrine 2.0.所有实体都工作正常，除了下面详述的实体关系(或其他实体在我没有注意到的地方出现故障).

I'm using PHP and Doctrine 2.0. All entities work fine, with the exception of the entity-relation detailed below (or other entities are failing where I'm not noticing it).

考虑以下实体:

/** @Entity */
class Target {
  /**
   * @ManyToOne(targetEntity="kentitySource", cascade={"persist"})
   * @JoinColumn(name="basic_vacancy_id", nullable=false)
   * @var kentitySource
   */
  $source;

  ...
}

/** @Entity */
class Source {

  ...
}

现在，当我调用 $target->getSource() 时，我得到了一个 kentityproxykentitySourceProxy 的实例(这是正确的代理类).但是，Source 属性的所有 getter 都返回 NULL.

Now, when I call $target->getSource() I get an instance of kentityproxykentitySourceProxy (which is the correct proxy class). However, all the getters for Source's properties return NULL.

我做错了什么?

我已将 fetch="EAGER" 属性添加到关系注释中，现在一切似乎都很好(除了加载不再延迟的事实).什么可能导致 Doctrine 2.0 的延迟加载中断?

I've added the fetch="EAGER" attribute to the relational annotation, and now everything seems to go just fine (except for the fact that loading is no longer lazy). What could cause Doctrine 2.0's lazy loading to break?

推荐答案

正如我在上面的问题中看到的，我已将 fetch="EAGER" 属性添加到关系注释中，现在一切似乎都很好(除了因为加载不再是惰性的).

As seen above in my question, I've added the fetch="EAGER" attribute to the relational annotation, and now everything seems to go just fine (except for the fact that loading is no longer lazy).

这当然是一种解决方法，并没有修复实际的错误.除此之外，我仍然不知道是什么导致我的代码/教义崩溃.但是，这种变通办法对性能的影响似乎可以忽略不计——即使完全存在.

This is of course a workaround, and no fix of the actual bug. In addition to this, I still don't know what caused my code/Doctrine to break. However, the performance impact of this workaround seems to be negligible - if even present at all.

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