如何在不复制结果的情况下用jq替换多个值？

Question

我正在尝试根据一些条件更新 JSON 文件的某些属性：

• 属性的名称必须包含字符串“Description”。
• 属性的

  ismydata

  属性必须是

  true

  .
• 属性的

  deprecatedVersion

  的值必须为空字符串。

此处显示了我尝试更新的示例 JSON：

{
  "name": "account",
  "description": "Some description",
  "attributes": {
   "accountNameCode": {
      "description": "Name of the account type.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": ""
    },
    "accountNameDescription": {
      "description": "Description of the account type.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": ""
    },
    "anotherDescription": {
      "description": "Some other thing.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": ""
    }
  }
}

目前，我有以下脚本几乎需要什么，但是它会为找到的每个匹配项复制 JSON 主体：

(.attributes 
| with_entries( select(.key|contains("Description"))) 
| keys[] as $k | .[$k] 
| select(.ismydata==true) and select(.deprecatedVersion=="") | $k) as $matchKey
| .attributes[$matchKey].description as $description
| .attributes[$matchKey].deprecatedVersion |= "Y"
| .attributes[$matchKey].description |= "Deprecated- this has been replaced by... " + $description

这导致以下 -

{
  "name": "account",
  "description": "Some description",
  "attributes": {
    "accountNameCode": {
      "description": "Name of the account type.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": ""
    },
    "accountNameDescription": {
      "description": "Deprecated- This property has been replaced by the enumerationDataType.description field. Description of the account type.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": "Y"
    },
    "anotherDescription": {
      "description": "Some other thing.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": ""
    }
  }
}
{
  "name": "account",
  "description": "Some description",
  "attributes": {
    "accountNameCode": {
      "description": "Name of the account type.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": ""
    },
    "accountNameDescription": {
      "description": "Description of the account type.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": ""
    },
    "anotherDescription": {
      "description": "Deprecated- This property has been replaced by the enumerationDataType.description field. Some other thing.",
      "type": "string",
      "ismydata": true,
      "deprecatedVersion": "Y"
    }
  }
}

• 它显示了我的条件的每个匹配项的整个结构的副本。我如何将其压缩成一个输出？

Answer 1

根据问题描述和示例代码，看来您基本上是在尝试更新 .attributes；最简单的方法可能是使用以下形式：

.attributes |= ...

事实上，以下似乎是一个解决方案：

.attributes |=
  with_entries(
    if (.key|contains("Description")) 
        and .value.ismydata == true
        and .value.deprecatedVersion == ""
    then .value |= 
      ((.deprecatedVersion = "Y")
       | .description |= "Deprecated- this has been replaced by ...\(.)")
    else .
    end)

---

（此解决方案与@Newpaw 建议的解决方案非常相似，但随后被删除。）