英文:
Unable to get expected output using JOLT parser
问题
我有以下input：
[
{
"ownerId": "XTV7I728",
"vehicleId": "999",
"engines": [
{
"engineId": "1",
"engineName": "Standard Engine",
"engineHp": 300
},
{
"engineId": "2",
"engineName": "Custom Engine",
"engineHp": 450
}
]
}
]
我需要如下的expected输出：
[{
"ownerId": "XTV7I728",
"vehicleId": "999",
"engines": {
"engineId": "1",
"engineName": "Standard Engine",
"engineHp": 300
}
},
{
"ownerId": "XTV7I728",
"vehicleId": "999",
"engines": {
"engineId": "2",
"engineName": "Custom Engine",
"engineHp": 450
}
}]
我尝试了以下的spec但是报错了：
[{
"ownerId": "ownerId",
"*": {
"vehicleId": "vehicleId",
"engineId": "engineId",
"engineHp": "engineHp"
}
}]
错误信息：
运行转换时出错。
JOLT Chainr 'operation' 必须在索引0处实现Transform或ContextualTransform。
请告诉我我哪里做错了。
英文:
I have below input:
[
{
"ownerId": "XTV7I728",
"vehicleId": "999",
"engines": [
{
"engineId": "1",
"engineName": "Standard Engine",
"engineHp": 300
},
{
"engineId": "2",
"engineName": "Custom Engine",
"engineHp": 450
}
]
}
]
I need the expected output as below:
[{
"ownerId": "XTV7I728",
"vehicleId": "999",
"engines":{
"engineId": "1",
"engineName": "Standard Engine",
"engineHp": 300
}
},
{
"ownerId": "XTV7I728",
"vehicleId": "999",
"engines":{
"engineId": "2",
"engineName": "Custom Engine",
"engineHp": 450
}
}]
I tried below spec but it throws an error:
[{
"ownerId": "ownerId",
"*": {
"vehicleId": "vehicleId",
"engineId": "engineId",
"engineHp": "engineHp"
}
}]
Error:
Error running the Transform.
JOLT Chainr 'operation' must implement Transform or ContextualTransform at index:0.
Please let me know where I went wrong.
答案1
得分: 1
您需要指定操作（如果使用 Chain spec），然后是一个执行实际“遍历”对象树的 `spec` 部分。应该像这样工作：
[
{
"operation": "shift",
"spec": {
"*": {
"engines": {
"*": {
"@(2,ownerId)": "[#2].ownerId",
"@(2,vehicleId)": "[#2].vehicleId",
"*": "[#2].&"
}
}
}
}
}
]
英文:
You have to specify the operation (if using a Chain spec) and then a spec section that does the actual "walking" of your object tree. This should work:
[
{
"operation": "shift",
"spec": {
"*": {
"engines": {
"*": {
"@(2,ownerId)": "[#2].ownerId",
"@(2,vehicleId)": "[#2].vehicleId",
"*": "[#2].&"
}
}
}
}
}
]
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