检查 jolt 中是否为 null 或为空，并输入输入 JSON 中存在的另一个值

这是我的输入 JSON：

{
    "AddressBilling": {
        "FirstName": "Some Name",
        "LastName": "Some Name",
        "Address":"some address"
     }
    "AddressShipping": {
        "FirstName": "",
        "LastName": "",
        "Address":""
     }
}

我想保留“地址账单”和“地址运输”，但名称不同，即“付款地址”和“运输地址”，我为此编写了一个用于付款地址“部分的规范文件

{
    "operation": "shift",
    "spec": {
      "AddressBilling": {
        "FirstName": "payment_address.firstname",
        "LastName": "payment_address.lastname",
        "Address": "payment_address.address"
      },
       "AddressShipping": {
        "FirstName": "shipping_address.firstname",
        "LastName": "shipping_address.lastname"

      }
    }
}

现在我想要的是检查“AddressShipping”对象中的“Address”键是否为空，然后我想将“AddressBilling”的“Address”复制到“shipping_address”的“Address”。

可以通过“修改默认值”来做到这一点。仅当键不存在或值为 null 时，Modify-default 才会填充值。

Spec

[
  {
    "operation": "modify-default-beta",
    "spec": {
      "shipping_address": {
        "address": "@(2,payment_address.address)"
      }
    }
  }
]

输入A，没有送货地址的地方

{
  "payment_address": {
    "address": "some address"
  },
  "shipping_address": {}
}

产生输出 A，其中帐单地址被复制

{
  "payment_address" : {
    "address" : "some address"
  },
  "shipping_address" : {
    "address" : "some address"
  }
}

输入B，其中有shipping_address

{
  "payment_address": {
    "address": "some address"
  },
  "shipping_address": {
    "address": 1234
  }
}

生成输出 B，其中送货地址不会被覆盖。

{
  "payment_address" : {
    "address" : "some address"
  },
  "shipping_address" : {
    "address" : 1234
  }
}