# 修改或删除主题层级 - ChangeSubjects
#### 功能介绍
修改或删除主题层级。
#### 调用方法
请参见[如何调用API](https://support.huaweicloud.com/api-dataartsstudio/making_request.html)。
#### 授权信息
账号具备所有API的调用权限，如果使用账号下的IAM用户调用当前API，该IAM用户需具备调用API所需的权限。
- 如果使用角色与策略授权，具体权限要求请参见[权限和授权项](https://support.huaweicloud.com/api-dataartsstudio/abcd.html)。
- 如果使用身份策略授权，当前API调用无需身份策略权限。
 
#### URI
PUT /v2/{project_id}/design/subject-levels
表1路径参数 
| 参数         | 是否必选 | 参数类型   | 描述                                                                                                    |
|:---|:---|:---|:---|
| project_id | 是    | String | 项目ID，获取方法请参见[项目ID和账号ID](https://support.huaweicloud.com/api-dataartsstudio/projectid_accountid.html)。 |
   
#### 请求参数
表2请求Header参数 
| 参数           | 是否必选 | 参数类型   | 描述                                                                                                                                                                       |
|:---|:---|:---|:---|
| X-Auth-Token | 是    | String | IAM Token，通过调用IAM服务获取用户Token接口获取（响应消息头中X-Subject-Token的值） 使用Token认证时必选。                                                                |
| workspace    | 是    | String | 工作空间ID，获取方法请参见[实例ID和工作空间ID](https://support.huaweicloud.com/api-dataartsstudio/dataartsstudio_02_0350.html)。                                                             |
| X-Project-Id | 否    | String | 项目ID，获取方法请参见[项目ID和账号ID](https://support.huaweicloud.com/api-dataartsstudio/projectid_accountid.html)。 多project场景采用AK/SK认证的接口请求，则该字段必选。 |
| Content-Type | 否    | String | 默认值：application/json;charset=UTF-8 可选，有Body体的情况下必选，没有Body体则无需填写和校验。                                                                    |
   
表3请求Body参数 
| 参数     | 是否必选 | 参数类型                                                                       | 描述      |
|:---|:---|:---|:---|
| levels | 否    | Array of [CatalogLevelVO] objects | 主题层级信息。 |
   
 表4CatalogLevelVO 
| 参数      | 是否必选 | 参数类型    | 描述           |
|:---|:---|:---|:---|
| id      | 否    | String  | 编号，ID字符串。    |
| level   | 否    | Integer | 层级。取值范围为1-7。 |
| name_ch | 否    | String  | 中文名称。        |
| name_en | 否    | String  | 英文名称。        |
   
#### 响应参数
**状态码：200**
表5响应Body参数 
| 参数   | 参数类型                                          | 描述                    |
|:---|:---|:---|
| data | [data] object | data，统一的返回结果的最外层数据结构。 |
   
 表6data 
| 参数    | 参数类型                                                                      | 描述                    |
|:---|:---|:---|
| value | [CatalogLevelVOList] object | value，统一的返回结果的外层数据结构。 |
   
 表7CatalogLevelVOList 
| 参数     | 参数类型                                                                        | 描述      |
|:---|:---|:---|
| levels | Array of [CatalogLevelVO] objects | 主题层级信息。 |
   
 表8CatalogLevelVO 
| 参数      | 参数类型    | 描述           |
|:---|:---|:---|
| id      | String  | 编号，ID字符串。    |
| level   | Integer | 层级。取值范围为1-7。 |
| name_ch | String  | 中文名称。        |
| name_en | String  | 英文名称。        |
   
**状态码：400**
表9响应Body参数 
| 参数         | 参数类型   | 描述                   |
|:---|:---|:---|
| error_code | String | 错误码，如DS.6000，请求处理失败。 |
| error_msg  | String | 错误信息。                |
| data       | Object | 返回的数据信息。             |
   
**状态码：401**
表10响应Body参数 
| 参数         | 参数类型   | 描述                   |
|:---|:---|:---|
| error_code | String | 错误码，如DS.6000，请求处理失败。 |
| error_msg  | String | 错误信息。                |
| data       | Object | 返回的数据信息。             |
   
**状态码：403**
表11响应Body参数 
| 参数         | 参数类型   | 描述                   |
|:---|:---|:---|
| error_code | String | 错误码，如DS.6000，请求处理失败。 |
| error_msg  | String | 错误信息。                |
| data       | Object | 返回的数据信息。             |
   
**状态码：404**
表12响应Body参数 
| 参数         | 参数类型   | 描述                   |
|:---|:---|:---|
| error_code | String | 错误码，如DS.6000，请求处理失败。 |
| error_msg  | String | 错误信息。                |
| data       | Object | 返回的数据信息。             |
   
#### 请求示例
获取当前工作空间下，主题的层级信息。
```
PUT https://{endpoint}/v2/{project_id}/design/subject-levels
{
  "levels" : [ {
    "id" : "1141755876357632000",
    "level" : 1,
    "name_ch" : "主题域分组",
    "name_en" : "Business Domain Group"
  }, {
    "id" : "1141755876366020608",
    "level" : 2,
    "name_ch" : "主题域",
    "name_en" : "Business Domain"
  }, {
    "id" : "1184953097022242816",
    "level" : 3,
    "name_ch" : "主题域L3",
    "name_en" : "Business Domain L3"
  }, {
    "id" : "1184953097022242817",
    "level" : 4,
    "name_ch" : "主题域L4",
    "name_en" : "Business Domain L4"
  }, {
    "id" : "1184953097022242818",
    "level" : 5,
    "name_ch" : "主题域L5",
    "name_en" : "Business Domain L5"
  }, {
    "id" : "1141755876370214912",
    "level" : 6,
    "name_ch" : "业务对象",
    "name_en" : "Business Object"
  } ]
}
```
#### 响应示例
**状态码：200**
Success，返回数据是CatalogLevelVOList。
```
{
  "data" : {
    "value" : {
      "levels" : [ {
        "id" : "1141755876357632000",
        "level" : 1,
        "name_ch" : "主题域分组",
        "name_en" : "Business Domain Group"
      }, {
        "id" : "1141755876366020608",
        "level" : 2,
        "name_ch" : "主题域",
        "name_en" : "Business Domain"
      }, {
        "id" : "1184953097022242816",
        "level" : 3,
        "name_ch" : "主题域L3",
        "name_en" : "Business Domain L3"
      }, {
        "id" : "1184953097022242817",
        "level" : 4,
        "name_ch" : "主题域L4",
        "name_en" : "Business Domain L4"
      }, {
        "id" : "1184953097022242818",
        "level" : 5,
        "name_ch" : "主题域L5",
        "name_en" : "Business Domain L5"
      }, {
        "id" : "1141755876370214912",
        "level" : 6,
        "name_ch" : "业务对象",
        "name_en" : "Business Object"
      } ]
    }
  }
}
```
**状态码：400**
BadRequest
```
{
  "error_code" : "DS.60xx",
  "error_msg" : "The user request is illegal."
}
```
**状态码：401**
Unauthorized
```
{
  "error_code" : "DS.60xx",
  "error_msg" : "User authentication failed."
}
```
**状态码：403**
Forbidden
```
{
  "error_code" : "DS.60xx",
  "error_msg" : "The user does not have permission to call this API."
}
```
**状态码：404**
Not Found
```
{
  "error_code" : "DS.60xx",
  "error_msg" : "The User Request API does not exist."
}
```
#### SDK代码示例
SDK代码示例如下。
- [Java]
  获取当前工作空间下，主题的层级信息。
  ```
  package com.huaweicloud.sdk.test;
  import com.huaweicloud.sdk.core.auth.ICredential;
  import com.huaweicloud.sdk.core.auth.BasicCredentials;
  import com.huaweicloud.sdk.core.exception.ConnectionException;
  import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
  import com.huaweicloud.sdk.core.exception.ServiceResponseException;
  import com.huaweicloud.sdk.dataartsstudio.v1.region.DataArtsStudioRegion;
  import com.huaweicloud.sdk.dataartsstudio.v1.*;
  import com.huaweicloud.sdk.dataartsstudio.v1.model.*;
  import java.util.List;
  import java.util.ArrayList;
  public class ChangeSubjectsSolution {
      public static void main(String[] args) {
          // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
          // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
          String ak = System.getenv("CLOUD_SDK_AK");
          String sk = System.getenv("CLOUD_SDK_SK");
          String projectId = "{project_id}";
          ICredential auth = new BasicCredentials()
                  .withProjectId(projectId)
                  .withAk(ak)
                  .withSk(sk);
          DataArtsStudioClient client = DataArtsStudioClient.newBuilder()
                  .withCredential(auth)
                  .withRegion(DataArtsStudioRegion.valueOf("<YOUR REGION>"))
                  .build();
          ChangeSubjectsRequest request = new ChangeSubjectsRequest();
          CatalogLevelVOList body = new CatalogLevelVOList();
          List<CatalogLevelVO> listbodyLevels = new ArrayList<>();
          listbodyLevels.add(
              new CatalogLevelVO()
                  .withId("1141755876357632000")
                  .withLevel(1)
                  .withNameCh("主题域分组")
                  .withNameEn("Business Domain Group")
          );
          listbodyLevels.add(
              new CatalogLevelVO()
                  .withId("1141755876366020608")
                  .withLevel(2)
                  .withNameCh("主题域")
                  .withNameEn("Business Domain")
          );
          listbodyLevels.add(
              new CatalogLevelVO()
                  .withId("1184953097022242816")
                  .withLevel(3)
                  .withNameCh("主题域L3")
                  .withNameEn("Business Domain L3")
          );
          listbodyLevels.add(
              new CatalogLevelVO()
                  .withId("1184953097022242817")
                  .withLevel(4)
                  .withNameCh("主题域L4")
                  .withNameEn("Business Domain L4")
          );
          listbodyLevels.add(
              new CatalogLevelVO()
                  .withId("1184953097022242818")
                  .withLevel(5)
                  .withNameCh("主题域L5")
                  .withNameEn("Business Domain L5")
          );
          listbodyLevels.add(
              new CatalogLevelVO()
                  .withId("1141755876370214912")
                  .withLevel(6)
                  .withNameCh("业务对象")
                  .withNameEn("Business Object")
          );
          body.withLevels(listbodyLevels);
          request.withBody(body);
          try {
              ChangeSubjectsResponse response = client.changeSubjects(request);
              System.out.println(response.toString());
          } catch (ConnectionException e) {
              e.printStackTrace();
          } catch (RequestTimeoutException e) {
              e.printStackTrace();
          } catch (ServiceResponseException e) {
              e.printStackTrace();
              System.out.println(e.getHttpStatusCode());
              System.out.println(e.getRequestId());
              System.out.println(e.getErrorCode());
              System.out.println(e.getErrorMsg());
          }
      }
  }
  ```
- [Python]
  获取当前工作空间下，主题的层级信息。
  ```
  # coding: utf-8
  import os
  from huaweicloudsdkcore.auth.credentials import BasicCredentials
  from huaweicloudsdkdataartsstudio.v1.region.dataartsstudio_region import DataArtsStudioRegion
  from huaweicloudsdkcore.exceptions import exceptions
  from huaweicloudsdkdataartsstudio.v1 import *
  if __name__ == "__main__":
      # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
      # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
      ak = os.environ["CLOUD_SDK_AK"]
      sk = os.environ["CLOUD_SDK_SK"]
      projectId = "{project_id}"
      credentials = BasicCredentials(ak, sk, projectId)
      client = DataArtsStudioClient.new_builder() \
          .with_credentials(credentials) \
          .with_region(DataArtsStudioRegion.value_of("<YOUR REGION>")) \
          .build()
      try:
          request = ChangeSubjectsRequest()
          listLevelsbody = [
              CatalogLevelVO(
                  id="1141755876357632000",
                  level=1,
                  name_ch="主题域分组",
                  name_en="Business Domain Group"
              ),
              CatalogLevelVO(
                  id="1141755876366020608",
                  level=2,
                  name_ch="主题域",
                  name_en="Business Domain"
              ),
              CatalogLevelVO(
                  id="1184953097022242816",
                  level=3,
                  name_ch="主题域L3",
                  name_en="Business Domain L3"
              ),
              CatalogLevelVO(
                  id="1184953097022242817",
                  level=4,
                  name_ch="主题域L4",
                  name_en="Business Domain L4"
              ),
              CatalogLevelVO(
                  id="1184953097022242818",
                  level=5,
                  name_ch="主题域L5",
                  name_en="Business Domain L5"
              ),
              CatalogLevelVO(
                  id="1141755876370214912",
                  level=6,
                  name_ch="业务对象",
                  name_en="Business Object"
              )
          ]
          request.body = CatalogLevelVOList(
              levels=listLevelsbody
          )
          response = client.change_subjects(request)
          print(response)
      except exceptions.ClientRequestException as e:
          print(e.status_code)
          print(e.request_id)
          print(e.error_code)
          print(e.error_msg)
  ```
- [Go]
  获取当前工作空间下，主题的层级信息。
  ```
  package main
  import (
  "fmt"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
      dataartsstudio "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dataartsstudio/v1"
  "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dataartsstudio/v1/model"
      region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/dataartsstudio/v1/region"
  )
  func main() {
      // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
      // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
      ak := os.Getenv("CLOUD_SDK_AK")
      sk := os.Getenv("CLOUD_SDK_SK")
      projectId := "{project_id}"
      auth, err := basic.NewCredentialsBuilder().
          WithAk(ak).
          WithSk(sk).
          WithProjectId(projectId).
          SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      hcClient, err := dataartsstudio.DataArtsStudioClientBuilder().
           WithRegion(region.ValueOf("<YOUR REGION>")).
           WithCredential(auth).
           SafeBuild()
      if err != nil {
          fmt.Println(err)
          return
      }
      client := dataartsstudio.NewDataArtsStudioClient(hcClient)
      request := &model.ChangeSubjectsRequest{}
  idLevels:= "1141755876357632000"
  levelLevels:= int32(1)
  nameChLevels:= "主题域分组"
  nameEnLevels:= "Business Domain Group"
  idLevels1:= "1141755876366020608"
  levelLevels1:= int32(2)
  nameChLevels1:= "主题域"
  nameEnLevels1:= "Business Domain"
  idLevels2:= "1184953097022242816"
  levelLevels2:= int32(3)
  nameChLevels2:= "主题域L3"
  nameEnLevels2:= "Business Domain L3"
  idLevels3:= "1184953097022242817"
  levelLevels3:= int32(4)
  nameChLevels3:= "主题域L4"
  nameEnLevels3:= "Business Domain L4"
  idLevels4:= "1184953097022242818"
  levelLevels4:= int32(5)
  nameChLevels4:= "主题域L5"
  nameEnLevels4:= "Business Domain L5"
  idLevels5:= "1141755876370214912"
  levelLevels5:= int32(6)
  nameChLevels5:= "业务对象"
  nameEnLevels5:= "Business Object"
  var listLevelsbody = []model.CatalogLevelVo{
          {
              Id: &idLevels,
              Level: &levelLevels,
              NameCh: &nameChLevels,
              NameEn: &nameEnLevels,
          },
          {
              Id: &idLevels1,
              Level: &levelLevels1,
              NameCh: &nameChLevels1,
              NameEn: &nameEnLevels1,
          },
          {
              Id: &idLevels2,
              Level: &levelLevels2,
              NameCh: &nameChLevels2,
              NameEn: &nameEnLevels2,
          },
          {
              Id: &idLevels3,
              Level: &levelLevels3,
              NameCh: &nameChLevels3,
              NameEn: &nameEnLevels3,
          },
          {
              Id: &idLevels4,
              Level: &levelLevels4,
              NameCh: &nameChLevels4,
              NameEn: &nameEnLevels4,
          },
          {
              Id: &idLevels5,
              Level: &levelLevels5,
              NameCh: &nameChLevels5,
              NameEn: &nameEnLevels5,
          },
      }
  request.Body = &model.CatalogLevelVoList{
  Levels: &listLevelsbody,
  }
  response, err := client.ChangeSubjects(request)
  if err == nil {
          fmt.Printf("%+v\n", response)
      } else {
          fmt.Println(err)
      }
  }
  ```
- [更多]
  更多编程语言的SDK代码示例，请参见[API Explorer](https://console.huaweicloud.com/apiexplorer/#/openapi/DataArtsStudio/sdk?api=ChangeSubjects)的代码示例页签，可生成自动对应的SDK代码示例。
#### 状态码
| 状态码 | 描述                               |
|:---|:---|
| 200 | Success，返回数据是CatalogLevelVOList。 |
| 400 | BadRequest                       |
| 401 | Unauthorized                     |
| 403 | Forbidden                        |
| 404 | Not Found                        |