Spring Data MongoDB 审计不适用于嵌入式文档 [英] Spring Data MongoDB auditing doesn't work for embedded documents

问题描述

我正在尝试使用 Spring Data MongoDB @LastModifiedDate 注释来引入审计.它适用于顶级文档，但我遇到了嵌入对象的问题.

I'm trying to introduce auditing by using Spring Data MongoDB @LastModifiedDate annotation. It works fine for top-level documents but I've faced with the problem for embedded objects.

例如:

@Document(collection = "parent")
class ParentDocument {

    @Id
    String id;        

    @LastModifiedDate
    DateTime updated;

    List<ChildDocument> children;  

}

@Document
class ChildDocument {

    @Id
    String id;        

    @LastModifiedDate
    DateTime updated;

}

默认情况下，当我使用内部 children 列表保存 parentDocument 实例时，仅为 parentDocument 设置 updated 值> 但不适用于 children 列表中的任何对象.但在这种情况下，我也想审计它们.有没有可能以某种方式解决这个问题?

By default, when I save parentDocument instance with inner children list, updated value is set only for parentDocument but not for any object from the children list. But in this case I want to audit them too. Is it possible to solve this problem somehow?

推荐答案

我决定使用自定义 ApplicationListener

public class CustomAuditingEventListener implements 
        ApplicationListener<BeforeConvertEvent<Object>> {

    @Override
    public void onApplicationEvent(BeforeConvertEvent<Object> event) {
        Object source = event.getSource();
        if (source instanceof ParentDocument) {
            DateTime currentTime = DateTime.now();
            ParentDocument parent = (ParentDocument) source;
            parent.getChildren().forEach(item -> item.setUpdated(currentTime));
        }
    }
}

然后在应用上下文中添加相应的bean

And then add corresponding bean to the application context

<bean id="customAuditingEventListener" class="app.CustomAuditingEventListener"/>

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