Jolt：如何从对象列表中提取重复元素并在根级别添加一次

Question

我的输入样本 JSON，它在每个对象数组中有重复的 "total" 和 "nextpage" 元素，并且所有元素都具有相同的值。我需要在 "types" 键下方的顶层显示 "total" 和 "nextpage" 元素，并从其余 "total" 和 "nextpage" 元素中删除 JSON 文件.

{
  "types": {
    "coupontype1": [
      {
        "code": "XXX",
        "exp_dt": "2020-01-01",
        "total": 3,
        "nextPage": "urllink"
      },
      {
        "code": "YYY",
        "exp_dt": "2019-12-01",
        "total": 3,
        "nextPage": "urllink"
      }
    ],
    "coupontype2": [
      {
        "code": "ZZZ",
        "exp_dt": "2020-01-01",
        "total": 3,
        "nextPage": "urllink"
      }
    ]
  }
}

预期输出JSON

{
  "types": {
    "total": 3,
    "nextPage": "urllink"
    "coupontype1": [
      {
        "code": "XXX",
        "exp_dt": "2020-01-01"
      },
      {
        "code": "YYY",
        "exp_dt": "2019-12-01"
      }
    ],
    "coupontype2": [
      {
        "code": "ZZZ",
        "exp_dt": "2020-01-01"
      }
    ]
  }
}

我从上游组件收到了一个复杂的 JSON 结构，并使用 JOLT 模式将其结构化为我的输入 JSON，请帮助我为上述要求起草 JOLT 模式。我找不到解释 JOLT 模式设计的文档。在 JOLT 演示中尝试反复试验并参考示例以实现相同目的。但我完全陷入了这种情况。

Answer 1

查看内嵌评论以获取解释：

[
  {
    "operation": "shift",
    "spec": {
      "types": {
        // get but don't match so next copy works. 
        // Using value of coupontype1.0.total|nextPage and set to types
        "@(coupontype1)": {
          "0": {
            "total": "types.&",
            "nextPage": "types.&"
          }
        },
        // copy everything
        "*": {
          "@": "types.&1"
        }
      }
    }
  },
  {
    //remove total and nextPage
    "operation": "remove",
    "spec": {
      "types": {
        "*": {
          "*": {
            "total": "",
            "nextPage": ""
          }
        }
      }
    }
  }
]

Jolt：如何从对象列表中提取重复元素并在根级别添加一次

Jolt : How to extract repeatative element from list of objects and add once at the root level

json

jolt