{
"id": "/",
"code": "/",
"typeCode": "CPC",
"timeStamp": "2021-11-16T17:00:00-06:00",
"childList": [
{
"id": "577-1-1",
"code": "1111",
"name": "Electronics-1-1",
"displayName": "Electronics-1-1",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": [
{
"id": "579-2-1",
"code": "2222",
"name": "Calculators-2-1",
"displayName": "Calculators-2-1",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": null
},
{
"id": "509-2-2",
"code": "3333",
"name": "Oven-2-2",
"displayName": "Oven-2-2",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": [
{
"id": "749-3-1",
"code": "4444",
"name": "MicroOven-3-1",
"displayName": "MicroOven-3-1",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": null
}
]
}
]
},
{
"id": "549-1-2",
"code": "5555",
"name": "Toys, Crafts & Leisure",
"displayName": "Toys, Crafts & Leisure",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": [
{
"id": "49674",
"code": "7605",
"name": "Pet Supplies",
"displayName": "Pet Supplies",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": [
{
"id": "49684",
"code": "7615",
"name": "Beds & Houses",
"displayName": "Beds & Houses",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": [
]
}
]
}
]
},
{
"id": "58782",
"code": "0100",
"name": "Fashion (new)",
"displayName": "Fashion",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": [
{
"id": "49056",
"code": "6958",
"name": "Blazers & Jackets, Etc. - Department",
"displayName": "Blazers & Jackets, Etc.",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": [
{
"id": "50851",
"code": "7837",
"name": "Dusters PDM Name",
"displayName": "Dusters PDM Display Name",
"active": true,
"languageCode": "en",
"typeCode": "CPC",
"childList": null
}
]
}
]
}
]
}
预期的 XML 如下 - 此处必须注明 childElement 的完整地址，并且必须将其分组到第一个父 childList 下 我们不会知道任何数组的确切子元素，即一个 childList 内可以有“n”个 childList。 （当 childList 值为空数组 [] 或 null 时，将被视为该 childList 没有子元素。） 第一个子列表数组中有多少个元素 - 这些许多 CategoryList 元素必须在 xml 中形成 注意：这里我只以 2 个元素为例 - 但任何子列表数组都可以在其中包含任意数量的子列表数组。
XML 转换：
<Category CategoryId="${childList.code}" CategoryPath="${childList.code}/${childList.childList.code}" Description="${childList.displayName}" ShortDescription="${childList.name}">
<Extn ExtnSyncTS="${headers.timeStamp}"/>
</Category>
预期 XML：
<CategoryListArray>
<CategoryList>
<Category CategoryId="1111" CategoryPath="/DefaultText/1111" Description="Electronics-1-1" ShortDescription="Electronics-1-1">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
<Category CategoryId="2222" CategoryPath="/DefaultText/1111/2222" Description="Calculators-2-1" ShortDescription="Calculators-2-1">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
<Category CategoryId="3333" CategoryPath="/DefaultText/1111/3333" Description="Oven-2-2" ShortDescription="Oven-2-2">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
<Category CategoryId="4444" CategoryPath="/DefaultText/1111/3333/4444" Description="MicroOven-3-1" ShortDescription="MicroOven-3-1">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
</CategoryList>
<CategoryList>
<Category CategoryId="5555" CategoryPath="/DefaultText/5555" Description="Toys, Crafts & Leisure" ShortDescription="Toys, Crafts & Leisure">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
<Category CategoryId="7605" CategoryPath="/DefaultText/5555/7605" Description="Pet Supplies" ShortDescription="Pet Supplies">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
<Category CategoryId="7615" CategoryPath="/DefaultText/5555/7605/7615" Description="Beds & Houses" ShortDescription="Beds & Houses">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
</CategoryList>
<CategoryList>
<Category CategoryId="0100" CategoryPath="/DefaultText/0100" Description="Fashion" ShortDescription="Fashion (new)">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
<Category CategoryId="6958" CategoryPath="/DefaultText/0100/6958" Description="Blazers & Jackets, Etc." ShortDescription="Blazers & Jackets, Etc. - Department">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
<Category CategoryId="7837" CategoryPath="/DefaultText/0100/6958/7837" Description="Dusters PDM Display Name" ShortDescription="Dusters PDM Name">
<Extn ExtnSyncTS="2021-11-16T17:00:00-06:00"/>
</Category>
</CategoryList>
</CategoryListArray>
我已经使用递归创建了一个解决方案。可能有点混乱，我已经在 DW 的评论中做了解释。
%dw 2.0
var extnSyncTs = payload.timeStamp
// This is just a small utility function to generate the "CategoryPath"
fun appendToPath(currentPath, pathToAppend) =
if(isEmpty(currentPath)) pathToAppend
else currentPath ++ "/" ++ pathToAppend
/*
* This function will take one object from the child list array
* and return corresponding XML Category object
*/
fun childListElementToCategory(childListElement, rootPath='') =
{
Category @(
CategoryId: childListElement.code,
CategoryPath: rootPath appendToPath childListElement.code,
Description: childListElement.displayName,
ShortDescription: childListElement.name
): {
Extn @(ExtnSyncTS: extnSyncTs): null
}
}
/**
* This is a tricky one. It accepts the childList array then uses the above
* function to get the Category element for each of the childList element. It
* uses recursion to call itself if there are more childList in any element
* of the passed childList. The rootPath element is to retain the path from
* the parent childList element.
*/
fun childListToCategoryList(childList, rootPath='') =
childList map ((childListElement) ->
{
(childListElementToCategory(childListElement, rootPath)),
(childListToCategoryList(childListElement.childList, rootPath appendToPath childListElement.code))
}
)
output application/xml
---
CategoryListArray: {
CategoryList: (childListToCategoryList(payload.childList))
}