javascript - JSON 补丁 rfc6902 : Sequential operation and index

Question

在JSON patch中，如何使用索引对同一个数组进行后续操作。例如，考虑

 var source = { colors: ['Red', 'Green', 'Blue'] };
 var target = { colors: [] }; 

补丁文档(操作)

[{"op":"remove","path":"/colors/0"},
{"op":"remove","path":"/colors/1"},
{"op":"remove","path":"/colors/2"}]

如果我考虑源的索引，上面的索引是正确的。但是，当我按顺序应用它时，索引不正确。也就是说，如果我删除第 0 个和第 1 个索引，则索引 2 处没有元素。

我可以想出几种方法来处理这个问题。要么将所有删除操作分组在一个数组上，然后保留一个临时结构以在删除期间保存/操作索引中的更改。或者，保持索引相对于可变值

[{"op":"remove","path":"/colors/0"},
{"op":"remove","path":"/colors/0"},
{"op":"remove","path":"/colors/0"}]

如果操作被认为是资源序列的突变，这是有意义的。

有没有这方面的标准。我在规范中看不到任何相关信息。 A.4. Removing an Array Element

Answer 1

Is there any standard on this

section about the evaluation of the operations似乎很清楚:

Evaluation of a JSON Patch document begins against a target JSON
document.  Operations are applied sequentially in the order they
appear in the array.  Each operation in the sequence is applied to
the target document; the resulting document becomes the target of the
next operation.