Shift JOLT转换-以下转换面临的问题

Question

我试图将下面的输入json转换为展平必要的列名称及其值，同时保留所有元数据。

以下是我为CDC用例提供的输入json 。

{
  "type": "update",
  "timestamp": 1558346256000,
  "binlog_filename": "mysql-bin-changelog.000889",
  "binlog_position": 635,
  "database": "books",
  "table_name": "publishers",
  "table_id": 111,
  "columns": [
    {
      "id": 1,
      "name": "id",
      "column_type": 4,
      "last_value": 2,
      "value": 2
    },
    {
      "id": 2,
      "name": "name",
      "column_type": 12,
      "last_value": "Suresh",
      "value": "Suresh123"
    },
    {
      "id": 3,
      "name": "email",
      "column_type": 12,
      "last_value": "Suresh@yahoo.com",
      "value": "Suresh@yahoo.com"
    }
  ]
}

以下是预期的输出json

[
  {
    "type": "update",
    "timestamp": 1558346256000,
    "binlog_filename": "mysql-bin-changelog.000889",
    "binlog_position": 635,
    "database": "books",
    "table_name": "publishers",
    "table_id": 111,
    "columns": {
      "id": "2",
      "name": "Suresh123",
      "email": "Suresh@yahoo.com"
    }
  }
]

我尝试了以下规范，可以从中检索column对象，但无法检索其余的元数据。

[
  {
    "operation": "shift",
    "spec": {
      "columns": {
        "*": {
          "@(value)": "[#1].@(1,name)"
        }
      }
    }
  }
]

任何线索将不胜感激。

Answer 1

我得到了上述转换的JOLT规范。 我将其发布在这里，以防万一有人偶然发现这样的东西。

[
  {
    "operation": "shift",
    "spec": {
      "columns": {
        "*": {
          "@(value)": "columns.@(1,name)"
        }
      },
      "*": "&"
    }
  }
]