模块通过EJB的揭露功能。如何处理模块之间Hibernate的懒加载？ [英] Modules exposing functionality via EJBs. How to handle Hibernate lazy loading between modules?

问题描述

可以说，一个应用程序被分成模块，每个模块通过EJB的揭露功能。如果模块A使得在返回休眠通过检索的对象模块B的EJB方法的调用，那么模块A将无法调用该对象的延迟加载方法，因为会话不再存在。如何处理这种情况？

Lets say an application is broken into modules, each module exposing functionality via EJBs. If module A makes a call to an EJB method in module B which returns an object retrieved via Hibernate, then module A will not be able to call a lazy loading method of that object because the session is no longer there. How to handle this kind of situation?

推荐答案

我想出了这个最后的决定。还没有尝试过，但我认为它会奏效。问题是

I came up with this final decision. Haven't tried it yet but I think it will work. The problem was

如果模块A使得在模块B EJB方法返回通过Hibernate的检索对象的调用，那么模块A将无法调用该对象的延迟加载方法，因为会话不再存在。

If module A makes a call to an EJB method in module B which returns an object retrieved via Hibernate, then module A will not be able to call a lazy loading method of that object because the session is no longer there.

因此​​，为了克服这个问题，模块B将只返回该对象和模块A的主键将检索经由休眠的对象。这样一个模块就可以调用该对象的延迟加载的方法。

So in order to overcome this, module B will return only the primary key of the object and module A will retrieve the object via Hibernate. This way module A will be able to call lazy loaded methods of the object.

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