Question

我有一个Application实体和一个User实体。从应用程序到用户的一对多关系，即一个应用程序可以有多个用户我更新用户并更改分配给他的应用程序。到目前为止，我有以下内容：

Diff diff = javers.compare(oldUser, newUser);
List<ReferenceChange> referenceChanges = diff.getChangesByType(ReferenceChange.class);
for (ReferenceChange referenceChange : referenceChanges) {
            Object oldRef = referenceChange.getLeftObject().get();
            Object newRef = referenceChange.getRightObject().get();             
            Diff refDiff = javers.compare(oldRef,newRef);               
        }

调试时请查看以下结果：
referenceChanges List：
ReferenceChange {globalId：＆＃39; com.ds.appmanager.services.domain.User / 3＆＃39;，property：＆＃39; application＆＃39;，oldRef：＆＃39; com.ds.appmanager.services。 domain.Application / 7＆＃39;，newRef：＆＃39; com.ds.appmanager.services.domain.Application / 3＆＃39;}
的 oldRef
应用程序[applicationId = 7，applicationName = KYC，applicationDesc = DEV_TEST，applicationLaunch = 2016-12-31 00：00：00.0，live = false]
的 newRef
申请[applicationId = 3，applicationName = KYC，applicationDesc = hellp，applicationLaunch = Sat Mar 12 00:00:00 IST 2016，live = true]

当我将两个对象传递给javers.compare（oldRef，newRef）时，它再次给出了与 referenceChanges 相同的结果。我认为它应该给我每个属性的值更改，例如，applicationDesc，oldVal = DEV_TEST，newVal = hellp。

我在这里遗漏了什么吗？我想要做的就是获取在User对象中引用的Application对象的属性的值更改。

P.S：如果我将Object oldRef = referenceChange.getLeftObject().get();更改为Object oldRef = referenceChange.getLeftObject();，我会JaversException: CLASS_EXTRACTION_ERROR JaVers bootstrap error - Don't know how to extract Class from type 'T'.

更新
刚才注意到我在执行Diff refDiff = javers.compare(oldRef,newRef);时没有获得ValueChanges 调试显示以下更改：

Diff:

1。 NewObject的{globalId：＆＃39; com.ds.appmanager.services.domain.Application / 7＆＃39;}
2. ObjectRemoved {globalId：＆＃39; com.ds.appmanager.services.domain.User / 5＆＃39;}
3. ObjectRemoved {globalId：＆＃39; com.ds.appmanager.services.domain.Application / 3＆＃39;}
4. ObjectRemoved {globalId：＆＃39; com.ds.appmanager.services.domain.User / 6＆＃39;}
5. ObjectRemoved {globalId：＆＃39; com.ds.appmanager.services.domain.User / 7＆＃39;}
6. ReferenceChange {globalId：＆＃39; com.ds.appmanager.services.domain.User / 3＆＃39;，property：＆＃39; application＆＃39;，oldRef：＆＃39; com.ds.appmanager。 services.domain.Application / 3＆＃39;，newRef：＆＃39; com.ds.appmanager.services.domain.Application / 7＆＃39;}

参考变更中的价值变化差异

0 个答案: