Javers按顺序比较清单 [英] Javers Comparing List In Order
问题描述
我有两个像这样的java类:
I have two java classes like so:
public class FooA {
private List<FooB> fooB;
}
public class FooB {
private Integer id;
private String name;
private double num;
}
我想比较FooA,它告诉我列表对象内的哪些字段发生了变化.但是当我这样做时:
I want to compare the FooA and it tell me what fields inside the list object changed. But when I do this:
FooA old = new FooA(Arrays.asList(new FooB(1, "old", 1.0)));
FooA new = new FooA(Arrays.asList(new FooB(1, "new", 1.0)));
Javers javers = JaversBuilder.javers()
.withListCompareAlgorithm(LEVENSHTEIN_DISTANCE)
.build();
javers.compare(old, new);
这给了我这个区别:
Diff:
* new object: com.FooA/#fooB/1d32d18fcb3ba2f7f7cb41af6cd96b32
* object removed: com.FooA/#fooB/223ef3c3249fe2898ac3354f9bf42620
* changes on com.FooA/ :
- 'fooB' collection changes :
. 'com.FooA/#fooB/223ef3c3249fe2898ac3354f9bf42620' removed
. 'com.FooA/#fooB/1d32d18fcb3ba2f7f7cb41af6cd96b32' added
我什至尝试过在FooB上添加ID,就像我在很多帖子中读到的一样.所以现在我的foob看起来像这样:
I even tried adding an Id on FooB like I've read in a lot of posts. So now my foob looks like this:
public class FooB {
@Id
private Integer id;
private String name;
private double num;
}
但是现在当我比较时,我得到了:
But now when I compare I get this:
Diff:
* changes on com.FooB/1 :
- 'name' changed from 'old' to 'new'
它正在注册为值更改,而不是集合更改.我希望diff像这样阅读:
It's registering as a value change rather than a collection change. I want the diff to read like so:
Diff:
* changes on com.FooA/#fooB/1 :
- 'fooB' collection changes :
. 'name' changed from 'old' to 'new'
我在做什么错了?
推荐答案
使用Javers
版本5.2.4
:
public class FooA {
private List<FooB> fooB;
public FooA(List<FooB> fooB) {
this.fooB = fooB;
}
}
public class FooB {
private Integer id;
private String name;
private double num;
public FooB(Integer id, String name, double num) {
this.id = id;
this.name = name;
this.num = num;
}
}
void test() {
FooA old = new FooA(Arrays.asList(new FooB(1, "old", 1.0)));
FooA new1 = new FooA(Arrays.asList(new FooB(1, "new", 1.0)));
Javers javers = JaversBuilder.javers()
.withListCompareAlgorithm(LEVENSHTEIN_DISTANCE)
.build();
System.out.println(
javers.compare(old, new1)
);
}
方法test
返回:
Diff:
* changes on pl.javers.JaversTest$FooA/ :
- 'fooB/0.name' changed from 'old' to 'new'
几乎与您想要的相同.
It is almost the same as you wanted.
FooA/fooB/0.name
-> fooA具有数组fooB,并且第一(索引0)名称属性已更改
FooA/fooB/0.name
-> fooA has array fooB and first (index 0) name property has changed
这篇关于Javers按顺序比较清单的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!