英文:
How to work with an array inside of another array?
问题
以下是您提供的内容的翻译，我将只翻译其中的文本部分，不包括代码：
我在处理 JSON 文档中的嵌套数组时遇到问题。我需要获取一个包含“CandidateEmail”和“ApplicationId”以及“JobRefNumber”的 JSON 文档的数组。我认为下面的示例将有助于您更好地理解。
我的输入是：
{
"Content": [
{
"CandidateEmail": "john1@noexist.com",
"Applications": [
{
"ApplicationId": "app1",
"JobRefNumber": "REF1"
},
{
"ApplicationId": "app2",
"JobRefNumber": "REF2"
}
]
},
{
"CandidateEmail": "carl2@email.com",
"Applications": [
{
"ApplicationId": "app3",
"JobRefNumber": "REF3"
},
{
"ApplicationId": "app4",
"JobRefNumber": "REF4"
}
]
}
]
}
预期的输出是：
[
{
"CandidateEmail": "john1@noexist.com",
"ApplicationId": "app1",
"JobRefNumber": "REF1"
},
{
"CandidateEmail": "john1@noexist.com",
"ApplicationId": "app2",
"JobRefNumber": "REF2"
},
{
"CandidateEmail": "carl2@email.com",
"ApplicationId": "app3",
"JobRefNumber": "REF3"
},
{
"CandidateEmail": "carl2@email.com",
"ApplicationId": "app4",
"JobRefNumber": "REF4"
}
]
我不知道这是否有所帮助，但以下是我目前已经起草的规范：
[
{
"operation": "shift",
"spec": {
"Content": {
"*": {
"Applications": {
"*": {
"@(2,CandidateEmail)": "[&1].CandidateEmail",
"ApplicationId": "[&1].ApplicationId",
"JobRefNumber": "[&1].JobRefNumber"
}
}
}
}
}
}
]
英文:
I'm having problems while working with a nested array inside another array on a JSON document. I need to obtain an array containing one JSON document with the "CandidateEmail" and the "ApplicationId" "JobRefNumber". I think that the example below will help you understand better.
My input is:
{
"Content": [
{
"CandidateEmail": "john1@noexist.com",
"Applications": [
{
"ApplicationId": "app1",
"JobRefNumber": "REF1"
},
{
"ApplicationId": "app2",
"JobRefNumber": "REF2"
}
]
},
{
"CandidateEmail": "carl2@email.com",
"Applications": [
{
"ApplicationId": "app3",
"JobRefNumber": "REF3"
},
{
"ApplicationId": "app4",
"JobRefNumber": "REF4"
}
]
}
]
}
The expected output is:
[
{
"CandidateEmail": "john1@noexist.com",
"ApplicationId": "app1",
"JobRefNumber": "REF1"
},
{
"CandidateEmail": "john1@noexist.com",
"ApplicationId": "app2",
"JobRefNumber": "REF2"
},
{
"CandidateEmail": "carl2@email.com",
"ApplicationId": "app3",
"JobRefNumber": "REF3"
},
{
"CandidateEmail": "carl2@email.com",
"ApplicationId": "app4",
"JobRefNumber": "REF4"
}
]
I don't know if it will be of any help, but here is the spec I've been able to draft so far:
[
{
"operation": "shift",
"spec": {
"Content": {
"*": {
"Applications": {
"*": {
"@(2,CandidateEmail)": "[&1].CandidateEmail",
"ApplicationId": "[&1].ApplicationId",
"JobRefNumber": "[&1].JobRefNumber"
}
}
}
}
}
}
]
答案1
得分: 1
你可以使用shift转换规范，例如
[
{
"operation": "shift",
"spec": {
"Content": {
"*": {
"Appl*": {
"*": {
"@2,CandidateEmail": "&3[#2].CandidateEmail", // 可以沿树向上两级以达到CandidateEmail级别
"*": "&3[#2].&" // 通过使用[#2]和&3区分"Applications"和"Content"数组的索引。使用&复制键，使用*通配符复制内部最深层对象中的所有属性。
}
}
}
}
}
},
{
"operation": "shift",
"spec": {// 去掉包装数组和对象的键
"*": {
"*": ""
}
}
}
]
英文:
You can use a shift transformation spec such as
[
{
"operation": "shift",
"spec": {
"Content": {
"*": {
"Appl*": {
"*": {
"@2,CandidateEmail": "&3[#2].CandidateEmail", // you an go two levels up the tree to reach the level of CandidateEmail
"*": "&3[#2].&" // distinguish by indexes of "Applications" and "Content" arrays through use of [#2] and &3 respectively. Replicate the keys by using &, and all attributes nested within innermost objects by using * wildcards.
}
}
}
}
}
},
{
"operation": "shift",
"spec": {// get rid of the keys of wrapper arrays and objects
"*": {
"*": ""
}
}
}
]
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