LazyToOne和Spring LoadTimeWeaver [英] LazyToOne and Spring LoadTimeWeaver

问题描述

我有一个已知的问题，即使使用注释fetchtype.lazy(例如，在此处进行描述:

I have the known problem, that Hibernate loads the data eager even with the annotation fetchtype.lazy (described for example here: http://justonjava.blogspot.de/2010/09/lazy-one-to-one-and-one-to-many.html).

因此我在属性中添加了注释@LazyToOne(LazyToOneOption.NO_PROXY)，并使用springs loadtimeweaver启用了字节码检测.
但是hibernate仍然热切地加载我的属性.

So I added the annotation @LazyToOne(LazyToOneOption.NO_PROXY) to my attributes and enabled bytecode Instrumentation with springs loadtimeweaver.
But hibernate still loads my properties eagerly.

我已经通过编织自己的代码对loadtimeweaver进行了测试，并且可以正常工作.有谁知道我想念的东西.

I have tested the loadtimeweaver by weaving own code and it works. Does anyone know what I miss.

以下描述了我的代码的结构.

The following describes the structure of my Code.

我的实体具有一对一的竞标关系，

I have entities with bidertional onetoone relationships like:

@Entity
public class ParentEntity {

  @OneToOne(fetch = FetchType.LAZY)
  @LazyToOne(LazyToOneOption.NO_PROXY)
  private ChildEntityONE childentityOne;


  @OneToOne(fetch = FetchType.LAZY)
  @LazyToOne(LazyToOneOption.NO_PROXY)
  private ChildEntityTWO childentityTwo;
}

和

@Entity
public class ChildEntityONE {
  @OneToOne(fetch = FetchType.LAZY)
  @LazyToOne(LazyToOneOption.NO_PROXY)
  private ParentEntity parentEntity ;
}

@Entity
public class ChildEntityTWO {
  @OneToOne(fetch = FetchType.LAZY)
  @LazyToOne(LazyToOneOption.NO_PROXY)
  private ParentEntity parentEntity ;
}

然后在我的Application类loadTimeWeaving中启用了

And I enabled in my Application class loadTimeWeaving with:

@EnableLoadTimeWeaving(aspectjWeaving=EnableLoadTimeWeaving.AspectJWeaving.ENABLED)
public class Application {
...
}

所用框架的版本:

春季4.2.3
春季靴1.3.2
Hibernate 4.3.11.Final

Spring 4.2.3
Spring boot 1.3.2
Hibernate 4.3.11.Final

推荐答案

我发现了我的错误.我忘了在application.properties中设置以下属性.

I found my mistake. I forgot to set the following property in application.properties.

spring.jpa.properties.hibernate.ejb.use_class_enhancer=true

此属性在休眠状态下启用字节码增强功能

This property enable the bytecode enhancement in hibernate

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