放大/DynamoDB 请求数据表，过滤多对多关系

问题描述

我尝试请求过滤多对多关系的表，但在放大 graphql 或 dynamoDB 上似乎不可能。

我有三个带有关系的表。品牌、主题、产品类型。

我的问题是：如何通过 topicId 和 ProductTypeID 过滤来选择所有品牌？

不管是什么解决方案，dynamoDb sdk，elastic @searchable 数据，在 dynamo db，partiQL 上扫描，直接在 graphql 解析器上。不管我拿什么。

这里是我的 graphql 架构：

type Topic @model
  @key(name: "topicByName",fields: ["name"])
  @searchable
{
  id: ID!
  name: String!
  color: String
  icon: String
  brands: [BrandTopic] @connection(keyName: "byTopic",fields: ["id"])
}

type BrandTopic @model
  @key(name: "byTopic",fields: ["topicID","brandID"])
  @key(name: "byBrand",fields: ["brandID","topicID"])
{
  id: ID!
  topicID: ID!
  brandID: ID!
  topic: Topic! @connection(fields: ["topicID"])
  brand: Brand! @connection(fields: ["brandID"])
}

type ProductType @model
  @key(name: "productTypesByName",fields: ["name"])
  @searchable
{
  id: ID!
  name: String!
  color: String
  icon: String
  brands: [BrandProductType] @connection(keyName: "byProductType",fields: ["id"])
}

type BrandProductType @model(queries: null)
  @key(name: "byProductType",fields: ["productTypeID","productTypeID"])
{
  id: ID!
  productTypeID: ID!
  brandID: ID!
  productType: ProductType! @connection(fields: ["productTypeID"])
  brand: Brand! @connection(fields: ["brandID"])
}

type Brand @model
  @key(name: "ByName",fields: ["name"])
  @searchable
{
  id: ID!
  name: String!
  link: String
  image: String
  bio: String
  topics: [BrandTopic] @connection(keyName: "byBrand",fields: ["id"])
  productTypes: [BrandProductType] @connection(keyName: "byBrand",fields: ["id"])
  createdAt: AWSDateTime! #important to keep it to have filter with keys
  updatedAt: AWSDateTime! #important to keep it to have filter with keys
}

解决方法

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