AWS AppSync GraphQL-使用union作为变异返回会导致错误_Graphql_Aws Appsync

AWS AppSync GraphQL-使用union作为变异返回会导致错误

graphql

AWS AppSync GraphQL-使用union作为变异返回会导致错误,graphql,aws-appsync,Graphql,Aws Appsync,我正在使用AWS AppSync创建一个GraphQL模式，我想使用Union作为返回。我想这样写： mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) { addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) { id type va

我正在使用AWS AppSync创建一个GraphQL模式，我想使用

Union

作为返回。我想这样写：

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values {
      ... on SteppedTariff {
        endDate
      }
      ... on SeasonalTimeTariff {
        endDate
        peakConsumption
      }
    }
  }
}

但我得到了一个错误：

Request failed with status code 400

字段

值

可以是

步进tariff

或

季节性metariff

类型，取决于

addUpdateTariff

的输入。就我所搜索到的，

Union

仅用于查询，我没有找到一些文档说明它不能以其他方式使用

我是否遗漏了什么，或者我真的不能这样使用

Union

模式：

type Tariff {
  id: ID!
  type: TariffType!
  values: [TariffValue!]
}

type SteppedTariff {
  endDate: AWSDate
}

type SeasonalTimeTariff {
  endDate: AWSDate
  peakConsumption: Float
}

union TariffValue = SeasonalTimeTariff | SteppedTariff

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "843eadcf-48bd-4d58-93ec-8bbe96db3635",
      "type": "SeasonalTime",
      "values": [
        "{endDate=2019-02-02}"
      ]
    }
  }
}

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values {
      endDate
    }
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "7f77c5d9-2b06-4bb8-a678-10996addc4e1",
      "type": "SeasonalTime",
      "values": [
        {
          "endDate": "2019-02-02"
        }
      ]
    }
  }
}

测试关税值的不同模式：

type Tariff {
  id: ID!
  type: TariffType!
  values: [TariffValue!]
}

type SteppedTariff {
  endDate: AWSDate
}

type SeasonalTimeTariff {
  endDate: AWSDate
  peakConsumption: Float
}

union TariffValue = SeasonalTimeTariff | SteppedTariff

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "843eadcf-48bd-4d58-93ec-8bbe96db3635",
      "type": "SeasonalTime",
      "values": [
        "{endDate=2019-02-02}"
      ]
    }
  }
}

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values {
      endDate
    }
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "7f77c5d9-2b06-4bb8-a678-10996addc4e1",
      "type": "SeasonalTime",
      "values": [
        {
          "endDate": "2019-02-02"
        }
      ]
    }
  }
}

值：[字符串]

查询：

type Tariff {
  id: ID!
  type: TariffType!
  values: [TariffValue!]
}

type SteppedTariff {
  endDate: AWSDate
}

type SeasonalTimeTariff {
  endDate: AWSDate
  peakConsumption: Float
}

union TariffValue = SeasonalTimeTariff | SteppedTariff

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "843eadcf-48bd-4d58-93ec-8bbe96db3635",
      "type": "SeasonalTime",
      "values": [
        "{endDate=2019-02-02}"
      ]
    }
  }
}

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values {
      endDate
    }
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "7f77c5d9-2b06-4bb8-a678-10996addc4e1",
      "type": "SeasonalTime",
      "values": [
        {
          "endDate": "2019-02-02"
        }
      ]
    }
  }
}

响应：

type Tariff {
  id: ID!
  type: TariffType!
  values: [TariffValue!]
}

type SteppedTariff {
  endDate: AWSDate
}

type SeasonalTimeTariff {
  endDate: AWSDate
  peakConsumption: Float
}

union TariffValue = SeasonalTimeTariff | SteppedTariff

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "843eadcf-48bd-4d58-93ec-8bbe96db3635",
      "type": "SeasonalTime",
      "values": [
        "{endDate=2019-02-02}"
      ]
    }
  }
}

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values {
      endDate
    }
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "7f77c5d9-2b06-4bb8-a678-10996addc4e1",
      "type": "SeasonalTime",
      "values": [
        {
          "endDate": "2019-02-02"
        }
      ]
    }
  }
}

值：[seasurealtimetariff]

查询：

type Tariff {
  id: ID!
  type: TariffType!
  values: [TariffValue!]
}

type SteppedTariff {
  endDate: AWSDate
}

type SeasonalTimeTariff {
  endDate: AWSDate
  peakConsumption: Float
}

union TariffValue = SeasonalTimeTariff | SteppedTariff

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "843eadcf-48bd-4d58-93ec-8bbe96db3635",
      "type": "SeasonalTime",
      "values": [
        "{endDate=2019-02-02}"
      ]
    }
  }
}

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values {
      endDate
    }
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "7f77c5d9-2b06-4bb8-a678-10996addc4e1",
      "type": "SeasonalTime",
      "values": [
        {
          "endDate": "2019-02-02"
        }
      ]
    }
  }
}

响应：

type Tariff {
  id: ID!
  type: TariffType!
  values: [TariffValue!]
}

type SteppedTariff {
  endDate: AWSDate
}

type SeasonalTimeTariff {
  endDate: AWSDate
  peakConsumption: Float
}

union TariffValue = SeasonalTimeTariff | SteppedTariff

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "843eadcf-48bd-4d58-93ec-8bbe96db3635",
      "type": "SeasonalTime",
      "values": [
        "{endDate=2019-02-02}"
      ]
    }
  }
}

mutation addUpdateTariff($tariff: TariffInput!, $seasonalTimeTariff: [SeasonalTimeTariffInput!]) {
  addUpdateTariff(tariff: $tariff, seasonalTimeTariff: $seasonalTimeTariff) {
    id
    type
    values {
      endDate
    }
  }
}

{
  "data": {
    "addUpdateTariff": {
      "id": "7f77c5d9-2b06-4bb8-a678-10996addc4e1",
      "type": "SeasonalTime",
      "values": [
        {
          "endDate": "2019-02-02"
        }
      ]
    }
  }
}

您完全可以在突变的返回类型上使用联合。确保在值中包含字段

\uuu typename

。您的冲突解决程序模板应返回如下内容：

{
  "id": 1,
  "type": "?",
  "values": [
    {
      "__typename": "StepTariff",
      "endDate": "2019-01-01"
    },
    {
      "__typename": "SeasonalTimeTariff",
      "endDate": "2019-01-01",
      "peakConsumption": 1.0
    }
  ]
}