使用dataweave匹配ule子4中的数组值 [英] Matching Array values in mule 4 using dataweave

问题描述

我正在尝试使用dataweave从输入有效负载中匹配特定值.

I am trying to match the specific value from input payload using dataweave.

输入:

{
    "drives": [{
        "id": "0AEzOyzyCb7Uk9PVA",
        "name": "SFJob-2020-10"
    }, {
        "id": "0AMEHi1wsq-8FUk9PVA",
        "name": "SFJobs-2020-11"
    } ],
    "nextPageToken": "~!!~AI9FV7RV4uSXy20zpCBTP2LFWCXS0c"
},
{
    "drives": [{
        "id": "0AEz3mOyzyCb7Uk9PVA",
        "name": "Dev2020-10"
    }, {
        "id": "0AMEHi1wsq-8FUk9PVA",
        "name": "Dev2020-11"
    }],
"nextPageToken": "~!!~AI9P2LFWCXS0c"
}

我如何检查"Dev2020-10"值是否是否存在.

how can i check whether value "Dev2020-10" is present or not.

我正在使用下面的代码给我错误.

i am using below code giving me error.

%dw 2.0
output application/json
---
payload.drives filter ((item, index) -> item.name == 'Dev2020-10')

预期输出:

[{

"id": "0AEz3mOyzyCb7Uk9PVA",
"name": "Dev2020-10"

}]

我该如何实现?

推荐答案

解决方案可以考虑两个步骤:

The solution can be thought of two steps:

1. 将所有驱动器合并在一起以获得对象的单个数组 flatten(inputArray.drives)
2. 根据搜索条件过滤新的对象数组 filter((item，index)-> item.name =="Dev2020-11")

解决方案将是这样:

%dw 2.0
output application/json

var inputArray = [
    {
    "drives": [{
        "id": "0AEzOyzyCb7Uk9PVA",
        "name": "SFJob-2020-10"
    }, {
        "id": "0AMEHi1wsq-8FUk9PVA",
        "name": "SFJobs-2020-11"
    } ],
    "nextPageToken": "~!!~AI9FV7RV4uSXy20zpCBTP2LFWCXS0c"
    },
    {
    "drives": [{
        "id": "0AEz3mOyzyCb7Uk9PVA",
        "name": "Dev2020-10"
    }, {
        "id": "0AMEHi1wsq-8FUk9PVA",
        "name": "Dev2020-11"
    }],
"nextPageToken": "~!!~AI9P2LFWCXS0c"
    }
]
---
flatten(inputArray.drives) filter ((item, index) -> item.name == "Dev2020-11") 

要了解有关展平方法的更多信息，请参阅文档:ule子4文档

To learn more about flatten method, refer the documentation : mule 4 doc

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