在Javers中,是否可以检索列表(或任何Container)的添加对象?
我不想要GlobalId,而是真实对象实例。
getAddedValues似乎返回一个GlobalId而不是实际对象。
注意:我事先不知道要比较的对象类型。这是一个示例对象。
MyTestObject obj1 = //Initialise it
MyTestObject obj2 = //Initialise it
Diff diff = javers.compare(obj1, obj2);
List<ContainerChange> containerChanges = diff.getChangesByType(ContainerChange.class);
for (ContainerChange containerChange : containerChanges) {
for (Object addedValue : containerChange.getAddedValues()) {
containerChange.getAffectedObject() //Returns the affected object
addedValue //Returns an GlobalId but I want the real object added. (in this case the subObject added) Like the getAffectedObject() but with the other object.
}
}
@TypeName("MyTestObject")
private static class MyTestObject {
@Id
private int id;
private String value;
private List<SubObject> subObjects;
private MyTestObject() {
}
private MyTestObject(int id, String value, List<SubObject> subObjects) {
this.id = id;
this.value = value;
this.subObjects = subObjects;
}
}
@TypeName("SubObject")
private static class SubObject {
@Id
private int id;
private String value;
private SubObject() {
}
private SubObject(int id, String value) {
this.id = id;
this.value = value;
}
}
答案 0 :(得分:0)
我找到了其他一些changeType的解决方案。我能够使用NewObject和ObjectRemoved的getChangesByType来构建地图。在这些更改中,对象存在于受影响的对象中。
类似这样的东西:
map = Stream.of(NewObject.class, ObjectRemoved.class)
.flatMap(type -> diff.getChangesByType(type).stream())
.collect(
Collectors.toMap(change -> change.getAffectedGlobalId().toString(),
change -> change.getAffectedObject().get()));
并检索带有addedValue的对象
addedAndRemovedObjects.get(containerChange.getAddedValues().get(1).toString());
注1:我可能会更改toString键的其他内容,但它适用于我的测试示例。有一个GlobalId和IdentityId不等于,但是toString是。
注2:getAddedValues()。get(1)仅用于示例。