Jolt技术求助：将字符串数组转换为独立对象

我正在尝试将字符串数组转换为对象，但结果未达预期，恳请协助。我在将数组项拆分为独立对象时遇到瓶颈，部分项仍以数组形式保留。

输入JSON #

{
  "GroupMembers": {
    "group1": [
      "member1",
      "member2",
      "member3"
    ],
    "group2": [
      "member1",
      "member4",
      "member6",
      "member8"
    ],
    "group3": [
      "member2",
      "member6"
    ]
  }
}

当前使用的Spec文件 #

[
  {
    "operation": "shift",
    "spec": {
      "GroupMembers": {
        "*": {
          "*": {
            "@(1,[&])": {
              "*": {
                "$(3)": "GroupMembers[#4].groupId",
                "$": "GroupMembers[#4].memberId"
              }
            }
          }
        }
      }
    }
  }
]

预期输出 #

{
  "GroupMembers": [
    {
      "groupId": "group1",
      "memberId": "member1"
    },
    {
      "groupId": "group1",
      "memberId": "member2"
    },
    {
      "groupId": "group1",
      "memberId": "member3"
    },
    {
      "groupId": "group2",
      "memberId": "member1"
    },
    {
      "groupId": "group2",
      "memberId": "member4"
    },
    {
      "groupId": "group2",
      "memberId": "member6"
    },
    {
      "groupId": "group2",
      "memberId": "member8"
    },
    {
      "groupId": "group3",
      "memberId": "member2"
    },
    {
      "groupId": "group3",
      "memberId": "member6"
    }
  ]
}

修正后的Spec文件 #

[
  {
    "operation": "shift",
    "spec": {
      "GroupMembers": {
        "*": {
          "*": {
            "$(1)": "GroupMembers[#2].groupId",
            "$": "GroupMembers[#2].memberId"
          }
        }
      }
    }
  }
]

说明 #

原Spec嵌套层级冗余，@(1,[&])会取出整个成员数组，后续遍历反而导致结构混乱。修正后的逻辑更直接：

1. 第一层*遍历所有分组（group1、group2等）
2. 第二层*遍历每个分组下的成员
3. $(1)引用当前层级往上1级的键（即分组名称），赋值给groupId
4. $引用当前成员的值，赋值给memberId
5. [#2]基于第二层（成员遍历层）的迭代索引生成数组元素，确保每个成员对应独立对象

内容的提问来源于stack exchange，提问作者Praveen Kumar