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[英]how combine multiple arrays into a single associate array using the arrays as keys
[英]Map multiple string Arrays using Dataweave into a single Array
I have an array with a single index that has a JSON object that contains three different string arrays, which I have to map into a single one based on each index. 例如,每个数组中的所有第一个索引到一个单独的 JSON object 等等......
Dataweave 转换是否可行?
输入
[{
"id": [
"123",
"456",
"789"
],
"name": [
"Test Brand 1",
"Test Brand 2",
"Test Brand 3"
],
"address": [
"Via Roma 1",
"Via Milano 1",
"Via Napoli 1"
]
}]
所需的 output:
[
{
"Key1": "123",
"Key2": "Test Brand 1",
"Key3": "Via Roma 1"
},
{
"Key1": "456",
"Key2": "Test Brand 2",
"Key3": "Via Milano 1"
},
{
"Key1": "789",
"Key2": "Test Brand 3",
"Key3": "Via Napoli 1"
}
]
您可以尝试以下 DataWeave 表达式,假设每个数组将始终包含相同数量的项目:
%dw 2.0
output application/json
---
flatten(payload map (item, index1) ->
item.id map (item2, index2) -> {
"Key1": item2,
"Key2": item.name[index2],
"Key3": item.address[index2]
})
Output(地址名称已更改以确保转换按预期工作):
[
{
"Key1": "123",
"Key2": "Test Brand 1",
"Key3": "Via Roma 1"
},
{
"Key1": "456",
"Key2": "Test Brand 2",
"Key3": "Via Milano 2"
},
{
"Key1": "789",
"Key2": "Test Brand 3",
"Key3": "Via Napoli 3"
}
]
您可以尝试下面的代码,我们不需要进行两次迭代(循环)并且不需要展平。
%dw 2.0
output application/json
var id = payload[0].id
---
id map (item2, index2) -> {
"Key1": item2,
"Key2": payload[0].name[index2],
"Key3": payload[0].address[index2]
}
它会给出相同的结果。
[
{
"Key1": "123",
"Key2": "Test Brand 1",
"Key3": "Via Roma 1"
},
{
"Key1": "456",
"Key2": "Test Brand 2",
"Key3": "Via Milano 1"
},
{
"Key1": "789",
"Key2": "Test Brand 3",
"Key3": "Via Napoli 1"
}
]
谢谢
我在此使用了 swing 只是为了使其动态化,因此它适用于 arrays 中的任意数量的键。 由于您无法访问 reduce 中的索引,因此有点令人困惑。 享受!
%dw 2.0
output application/json
import indexOf from dw::core::Arrays
var data = [{
"id": [
"123",
"456",
"789"
],
"name": [
"Test Brand 1",
"Test Brand 2",
"Test Brand 3"
],
"address": [
"Via Roma 1",
"Via Milano 1",
"Via Napoli 1"
]
}]
---
(data flatMap valuesOf($)) map ((valuesArray) -> valuesArray reduce ((value, acc={}) -> acc ++ {
("key$(indexOf(valuesArray,value) + 1)"): value
}))
output:
[
{
"key1": "123",
"key2": "456",
"key3": "789"
},
{
"key1": "Test Brand 1",
"key2": "Test Brand 2",
"key3": "Test Brand 3"
},
{
"key1": "Via Roma 1",
"key2": "Via Milano 1",
"key3": "Via Napoli 1"
}
]
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