如何在地图中使用过滤器

Question

我有以下代码：

%dw 2.0 output application/json var attributeIdMapping =
${vault::attributeIdMapping}
--- {
"objectTypeId": 3,
"attributes": vars.requestBody mapObject (value, key) ->
{
"objectTypeAttributeId": (attributeIdMapping.attributes filter ($.name == key))[0].id,
"objectAttributeValues": [{
"value": value,
"key": key
}] 
} }

attributeId映射：

{
"attributes": [
{
"name": "accountType",
"id": "87"
},
{
"name": "accountClass",
"id": "89"
},
{
"name": "accountName",
"id": "85"
},
{
"name": "displayName",
"id": "18"
},
{
"name": "accountCategory",
"id": "88"
},
{
"name": "accountNumber",
"id": "84"
},
{
"name": "description",
"id": "86"
},
{
"name": "accountGroup",
"id": "90"
}
]
}

vars.requestBody:

{
"displayName": "TestMulesoft2",
"description": "Test"
}

但我的过滤器最终显示为null。据我所知，密钥并没有传递到地图本身之下的级别。我该怎么做？

Answer 1

我把所有输入数据都放在脚本中，以简化复制。问题似乎是使用运算符==来比较字符串和键类型返回为空。使用试图强制的运算符~=似乎会返回预期结果：

%dw 2.0 
output application/json 
var attributeIdMapping =
{
"attributes": [
{
"name": "accountType",
"id": "87"
},
{
"name": "accountClass",
"id": "89"
},
{
"name": "accountName",
"id": "85"
},
{
"name": "displayName",
"id": "18"
},
{
"name": "accountCategory",
"id": "88"
},
{
"name": "accountNumber",
"id": "84"
},
{
"name": "description",
"id": "86"
},
{
"name": "accountGroup",
"id": "90"
}
]
}
var requestBody = {
"displayName": "TestMulesoft2",
"description": "Test"
}
--- {
"objectTypeId": 3,
"attributes": requestBody mapObject (value, key) ->
{
"objectTypeAttributeId": (attributeIdMapping.attributes filter ($.name ~= key))[0].id,
"objectAttributeValues": [{
"value": value,
"key": key
}] 
} }

输出：

{
"objectTypeId": 3,
"attributes": {
"objectTypeAttributeId": "18",
"objectAttributeValues": [
{
"value": "TestMulesoft2",
"key": "displayName"
}
],
"objectTypeAttributeId": "86",
"objectAttributeValues": [
{
"value": "Test",
"key": "description"
}
]
}
}