mule中的dataweave 1.0到2.0迁移

Question

尝试将下面的dataweave从1.0转换为2.0，但我尝试的所有内容都会出现以下错误，例如

SkipNullon显示错误

不接受使用命名空间，

@PostalCode[0..4]无效，并且

无法使用insuredPrimaryAddr访问insuredInfo中的值。

数据编织1.0：

%dw 1.0
%output application/xml skipNullOn="everywhere"
%var insuredInfo = payload.DTOApplication.DTOInsured
%var insuredPrimaryAddr = insuredInfo.*PartyInfo[?($.@PartyTypeCd == "InsuredParty")].*Addr[?($.@AddrTypeCd == "InsuredPrimaryBusAddr")][0]
%namespace ns0 http://decisionresearch.com/RateMaker
---
ns0#rate:{
    ns0#code:insuredPrimaryAddr,
    ns0#ZipCode: payload..Addr[?($.@AddrTypeCd == "InsuredPrimaryBusAddr")][0].@PostalCode[0..4] default ""
}

我尝试了Dataweave 2.0：

%dw 2.0
output application/xml skipNullOn="everywhere"
var insuredInfo = payload.DTOApplication.DTOInsured
var insuredPrimaryAddr = insuredInfo.*PartyInfo[?($.@PartyTypeCd == "InsuredParty")].*Addr[?($.@AddrTypeCd == "InsuredPrimaryBusAddr")][0]
namespace ns0 http://decisionresearch.com/RateMaker
---
ns0#rate:{
    ns0#code:insuredPrimaryAddr,
    ns0#ZipCode: payload..Addr[?($.@AddrTypeCd == "InsuredPrimaryBusAddr")][0].@PostalCode[0..4] default ""
}

有效载荷：https://github.com/Manikandan99/rate-dtostep/blob/master/response.xml

关于如何在dataweave 2.0中编写相同的内容，请提供任何想法？

Answer 1

在dataweave 2.0中，我们使用到运算符进行数组索引。

%dw 2.0
output application/xml skipNullOn="everywhere"
var insuredInfo = payload.DTOApplication.DTOInsured
var insuredPrimaryAddr = insuredInfo.*PartyInfo[?($.@PartyTypeCd == "InsuredParty")].*Addr[?($.@AddrTypeCd == "InsuredPrimaryBusAddr")][0]
ns ns0 http://decisionresearch.com/RateMaker
---
ns0#rate:{
    ns0#code:insuredPrimaryAddr,
    ns0#ZipCode: payload..Addr[?($.@AddrTypeCd == "InsuredPrimaryBusAddr")][0].@PostalCode[0 to 4] default ""
}

输出

<?xml version='1.0' encoding='windows-1252'?>
<ns0:rate xmlns:ns0="http://decisionresearch.com/RateMaker">
  <ns0:ZipCode>80003</ns0:ZipCode>
</ns0:rate>