如何在Android中执行一对多变异？

Question

我正在使用AWS AppSync和Amplify。我的GraphQL模式的片段如下所示：

type Inspection @model {
  id: ID!
  name: String!
  date: AWSDate!
  photos: [Photo] @connection(name: "InspectionPhotos")
}

type Photo @model {
  id: ID!
  inspection: Inspection! @connection(name: "InspectionPhotos")
  photo: String!
}

编辑：这是我生成的架构的摘要：

input CreateInspectionInput {
    id: ID
    name: String!
    date: AWSDate!
}

input CreatePhotoInput {
    id: ID
    photo: String!
    photoInspectionId: ID!
}

type Inspection {
    id: ID!
    name: String!
    date: AWSDate!
    photos(
        filter: ModelPhotoFilterInput,
        sortDirection: ModelSortDirection,
        limit: Int,
        nextToken: String
    ): ModelPhotoConnection
}

type Photo {
    id: ID!
    inspection: Inspection!
    photo: String!
}

type Mutation {
    createInspection(input: CreateInspectionInput!): Inspection
    updateInspection(input: UpdateInspectionInput!): Inspection
    deleteInspection(input: DeleteInspectionInput!): Inspection
    createPhoto(input: CreatePhotoInput!): Photo
    updatePhoto(input: UpdatePhotoInput!): Photo
    deletePhoto(input: DeletePhotoInput!): Photo
}

我想创建一个新照片，所以我的输入看起来像这样：

CreatePhotoInput createPhotoInput = CreatePhotoInput.builder()
                    .photoInspectionId(inspectionId)
                    .photo(getS3Key(localPath))
                    .build();

但是在下面创建突变时，我得到一个错误，即inspection中的字段CreatePhotoMutation.CreatePhoto期望的对象类型为CreatePhotoMutation.Inspection，而不是字符串。

final CreatePhotoMutation.CreatePhoto expected =
                new CreatePhotoMutation.CreatePhoto(
                        "Photo",
                        UUID.randomUUID().toString(),
                        CreatePhotoInput.photoInspectionId(),
                        CreatePhotoInput.photo());

如何仅通过photoInspectionId执行此突变？ 我是否缺少某些东西，因为我是Android和AppSync的初学者...