Mule 使用Dataweave将记录合并到每个类别的单个JSON对象中
我使用Anypoint Studio 6.1和Mule 3.8.1，在Dataweave中，我有一个CSV文件作为输入和JSON列表输出 CSV文件中有多条记录具有相同的产品类别Id，但与之关联的产品详细信息不同。我希望为这些记录中的每个记录汇总输出，因此每个产品类别Id都有一个对象，其中包含该产品类别Id下每个产品的产品详细信息列表。我如何做到这一点 电流输出：Mule 使用Dataweave将记录合并到每个类别的单个JSON对象中,mule,aggregate,flatten,anypoint-studio,dataweave,Mule,Aggregate,Flatten,Anypoint Studio,Dataweave,我使用Anypoint Studio 6.1和Mule 3.8.1，在Dataweave中，我有一个CSV文件作为输入和JSON列表输出 CSV文件中有多条记录具有相同的产品类别Id，但与之关联的产品详细信息不同。我希望为这些记录中的每个记录汇总输出，因此每个产品类别Id都有一个对象，其中包含该产品类别Id下每个产品的产品详细信息列表。我如何做到这一点 电流输出： [ { "Products": { "ProductDetails": [ {
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
},
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
},
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsIdentifier": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
%dw 1.0
%input payload application/csv
%output application/json skipNullOn = "everywhere" , encoding = "UTF-8"
%var dataLookup = {(payload."ProductsCategoryId" map {($.Id): $.Value})}
---
(payload filter $$ > 2) map ((payload01 , indexOfPayload01) -> {
Products: {
ProductsDetails: [{
ProductsDetail: {
ProductsubDetails: {
ProductsAmount: payload01."Products Amount" as :number,
ProductsFrequency: payload01."Products Frequency"
},
ProductsType: payload01."Products Type"
}
}]
},
ProductsCategoryId: payload01."ProductsCategoryId"
})
ProductsCategoryId,Product Type,Product Frequency,Product Amount
ProductS001,PS4 Game,Monthly,7.5
ProductS001,X Box One Game,Fortnightly,7.5
ProductS002,Lego,Daily,7
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
},
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
},
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsIdentifier": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
%dw 1.0
%input payload application/csv
%output application/json skipNullOn = "everywhere" , encoding = "UTF-8"
%var dataLookup = {(payload."ProductsCategoryId" map {($.Id): $.Value})}
---
(payload filter $$ > 2) map ((payload01 , indexOfPayload01) -> {
Products: {
ProductsDetails: [{
ProductsDetail: {
ProductsubDetails: {
ProductsAmount: payload01."Products Amount" as :number,
ProductsFrequency: payload01."Products Frequency"
},
ProductsType: payload01."Products Type"
}
}]
},
ProductsCategoryId: payload01."ProductsCategoryId"
})
ProductsCategoryId,Product Type,Product Frequency,Product Amount
ProductS001,PS4 Game,Monthly,7.5
ProductS001,X Box One Game,Fortnightly,7.5
ProductS002,Lego,Daily,7
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
},
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
},
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsIdentifier": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
%dw 1.0
%input payload application/csv
%output application/json skipNullOn = "everywhere" , encoding = "UTF-8"
%var dataLookup = {(payload."ProductsCategoryId" map {($.Id): $.Value})}
---
(payload filter $$ > 2) map ((payload01 , indexOfPayload01) -> {
Products: {
ProductsDetails: [{
ProductsDetail: {
ProductsubDetails: {
ProductsAmount: payload01."Products Amount" as :number,
ProductsFrequency: payload01."Products Frequency"
},
ProductsType: payload01."Products Type"
}
}]
},
ProductsCategoryId: payload01."ProductsCategoryId"
})
ProductsCategoryId,Product Type,Product Frequency,Product Amount
ProductS001,PS4 Game,Monthly,7.5
ProductS001,X Box One Game,Fortnightly,7.5
ProductS002,Lego,Daily,7
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
},
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsCategoryId": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
[
{
"Products": {
"ProductDetails": [
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "monthly",
"ProductsNotes": "Product Notes 1",
"pick": false
},
"ProductType": "PS4 Game"
},
"ProductSubType": "Game"
},
{
"ProductDetail": {
"ProductSubDetails": {
"ProductAmount": 7.50,
"ProductReplenFrequency": "fortnightly",
"ProductsNotes": "Products Notes 2",
"pick": false
},
"ProductType": "X Box One Game"
},
"ProductSubType": "Game"
}
]
},
"ProductsIdentifier": "ProductS001",
"ProductSubType": "Computers and Games"
}
]
%dw 1.0
%input payload application/csv
%output application/json skipNullOn = "everywhere" , encoding = "UTF-8"
%var dataLookup = {(payload."ProductsCategoryId" map {($.Id): $.Value})}
---
(payload filter $$ > 2) map ((payload01 , indexOfPayload01) -> {
Products: {
ProductsDetails: [{
ProductsDetail: {
ProductsubDetails: {
ProductsAmount: payload01."Products Amount" as :number,
ProductsFrequency: payload01."Products Frequency"
},
ProductsType: payload01."Products Type"
}
}]
},
ProductsCategoryId: payload01."ProductsCategoryId"
})
ProductsCategoryId,Product Type,Product Frequency,Product Amount
ProductS001,PS4 Game,Monthly,7.5
ProductS001,X Box One Game,Fortnightly,7.5
ProductS002,Lego,Daily,7
谢谢您必须使用查找来获得所需的输出。请参考以下答案了解更多详细信息
%dw 1.0
%input payload application/csv
%output application/json skipNullOn = "everywhere" , encoding = "UTF-8"
---
payload groupBy $.ProductsCategoryId map {
Products: {
ProductsDetails: $ map (product , indexOfProduct) -> {
ProductsDetail: {
ProductsubDetails: {
ProductsAmount: product."Product Amount" as :number,
ProductsFrequency: product."Product Frequency"
},
ProductsType: product."Product Type"
}
}
},
ProductsCategoryId: $."ProductsCategoryId"[0]
}
%dw 1.0
%input payload application/csv
%output application/json skipNullOn = "everywhere" , encoding = "UTF-8"
---
payload groupBy $.ProductsCategoryId map {
Products: {
ProductsDetails: $ map (product , indexOfProduct) -> {
ProductsDetail: {
ProductsubDetails: {
ProductsAmount: product."Product Amount" as :number,
ProductsFrequency: product."Product Frequency"
},
ProductsType: product."Product Type"
}
}
},
ProductsCategoryId: $."ProductsCategoryId"[0]
}
[
{
"Products": {
"ProductsDetails": [
{
"ProductsDetail": {
"ProductsubDetails": {
"ProductsAmount": 7
},
"ProductsType": "Lego"
}
}
]
},
"ProductsCategoryId": "ProductS002"
},
{
"Products": {
"ProductsDetails": [
{
"ProductsDetail": {
"ProductsubDetails": {
"ProductsAmount": 7.5
},
"ProductsType": "PS4 Game"
}
},
{
"ProductsDetail": {
"ProductsubDetails": {
"ProductsAmount": 7.5
},
"ProductsType": "X Box One Game"
}
}
]
},
"ProductsCategoryId": "ProductS001"
}
]
HTH您介意提供一些示例输入吗？我已经添加了两个具有相同产品类别Id的记录的示例csv数据。我一直在查看group by和FLATNE命令，但未能获得正确的结果。当我尝试使用dataLookup功能时，我发现解决方案出现错误，该功能是“无法将：null强制为：键“。我已将问题和csv文件中的代码更新为较少的字段。你知道这可能是原因吗？我怎么能忽略空值？需要注意的一点是，主体从CSV文件的第5行开始。另外，是否有关于dataLookup函数的文档。正在努力寻找任何有助于调查这一问题的方法