[英]Dataweave: single item into an array, if not null
我正在从API调用接收有效负载,并且需要将单个值转换为具有单个元素的数组。
说这是我的有效载荷的两个例子:
{
"name": "Bob",
"loanTerms": {
"term": 120,
"loanRate": 0.0213,
"maxApproved": 60000
}
}
和
{
"name": "Bob",
"loanTerms": null
}
我想做这样的事情:
{
Name: payload.name
LoanOptions: [
{
ProductName: payload.loanTerms.term as :string,
DisplayName: null,
LoanTermMonth: payload.loanTerms.term,
Rate: payload.loanTerms.loanRate*100,
Amount: payload.loanTerms.maxApproved
} when payload.loanTerms?
]
}
但是编辑者一直对我bar之以鼻,说“此行有多个标记”(LoanOptions:行)
when
语句不完整。 一方面, otherwise
会缺少运算符。 另一方面, payload.loanTerms?
之后还有其他内容payload.loanTerms?
另外,在“ Name
字段后需要逗号。
另外,您可以删除方括号:
{
Name: payload.name,
LoanOptions:
[{
ProductName: payload.loanTerms.term as :string,
DisplayName: null,
LoanTermMonth: payload.loanTerms.term,
Rate: payload.loanTerms.loanRate*100,
Amount: payload.loanTerms.maxApproved
}] when payload.loanTerms != null
otherwise []
}
这可能不是一个很好的解决方案,但可以为您完成工作。
%dw 1.0
%output application/json
---
{
Name: payload.name,
(LoanOptions:
[{
ProductName: "abc" as :string,
DisplayName: null,
LoanTermMonth: payload.loanTerms.term,
Rate: payload.loanTerms.loanRate*100,
Amount: payload.loanTerms.maxApproved
}]) when payload.loanTerms != null,
(LoanOptions: null) when payload.loanTerms == null
}
如果您不希望在输入中不存在loanTerms时显示任何内容,则可以删除解决方案中提到的第二个Loanoptions(如下所示)。
%dw 1.0
%output application/json
---
{
Name: payload.name,
(LoanOptions:
[{
ProductName: "abc" as :string,
DisplayName: null,
LoanTermMonth: payload.loanTerms.term,
Rate: payload.loanTerms.loanRate*100,
Amount: payload.loanTerms.maxApproved
}]) when payload.loanTerms != null
}
您需要在when标记中添加条件,也需要添加其他条件。 看看下面的代码片段
%dw 1.0
%output application/json { Name: payload.name, LoanOptions: { ProductName: payload.loanTerms.term as :string, DisplayName: null, LoanTermMonth: payload.loanTerms.term, Rate: payload.loanTerms.loanRate*100, Amount: payload.loanTerms.maxApproved } when (payload.loanTerms != null) and (payload.loanTerms != []) and (payload.loanTerms != "") otherwise null }
%output application/json { Name: payload.name, LoanOptions: { ProductName: payload.loanTerms.term as :string, DisplayName: null, LoanTermMonth: payload.loanTerms.term, Rate: payload.loanTerms.loanRate*100, Amount: payload.loanTerms.maxApproved } when (payload.loanTerms != null) and (payload.loanTerms != []) and (payload.loanTerms != "") otherwise null
}
%output application/json { Name: payload.name, LoanOptions: { ProductName: payload.loanTerms.term as :string, DisplayName: null, LoanTermMonth: payload.loanTerms.term, Rate: payload.loanTerms.loanRate*100, Amount: payload.loanTerms.maxApproved } when (payload.loanTerms != null) and (payload.loanTerms != []) and (payload.loanTerms != "") otherwise null }
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.