Hasura GraphQL schema 生成是如何工作的

【Hasura GraphQL schema 生成是如何工作的】的更多相关文章

Hasura GraphQL schema 生成是如何工作的

不像大部分的graphql 引擎,使用标准的graphql 规范的处理模型,Hasura graphql 不存在resolver 的概念(实际上是有的,只是转换为了sql语法) 以下是Hasura graphql 引擎的内幕表的处理假设有一张表 profile(id,name) 需要暴露为graphql api ,以下是Hasura 的处理方式根据表生成一个graphql 类型(type) 根据表生成聚合函数的graphql 类型同时还会生成关系聚合函数的数据类型生成查询参数 wher…

graphql-compose graphql schema 生成工具集

graphql-compose 是一个强大的graphql schema 生成工具集包含以下特性快速便捷的复杂类型生成类型仓库,类型可以存储在schemacomposer 存储中包含flowtype(不太还用),typescript 的类型定义方便的插件包含json 以及date 类型快速的从graphql-tools 迁移当前支持的插件 mongose elasticsearch aws sdk 参考资料 https://graphql-compose.github.io/ h…

hasura graphql schema 导出

使用的是apollo 的插件安装apollo npm install -g apollo 基本使用因为我使用了模式拼接,所以地址有变动,一般是 http://host:port/v1alpha1/graphql 格式 apollo schema:download --endpoint=http://localhost:8080/graphql 生成的格式参考资料 https://docs.hasura.io/1.0/graphql/manual/schema/export-graphql-…

hasura graphql pg 自定义函数的使用

hasura graphql 的安装可以参考相关项目创建函数数据表创建 CREATE TABLE sql_function_table ( id SERIAL PRIMARY KEY, input text NOT NULL, output text ); 创建函数以及触发器 CREATE FUNCTION test_func() RETURNS trigger AS $emp_stamp$ BEGIN NEW.output := UPPER(NEW.input); RETURN NEW…

[GraphQL] Write a GraphQL Schema in JavaScript

Writing out a GraphQL Schema in the common GraphQL Language can work for simple GraphQL Schemas, but as our application grows, or when we start using more complex types like interfaces or unions, we find that we can’t use a GraphQL Language file in t…

[GraphQL] Serve a GraphQL Schema as Middleware in Express

If we have a GraphQL Schema expressed in terms of JavaScript, then we have a convenient package available to us that let’s us easily serve up our schema on any endpoint in an Express Server. In this video, we’ll use the express-graphql package to ser…

[GraphQL] Create a GraphQL Schema

we’ll take a look at the GraphQL Language and write out our first GraphQL Schema. We’ll use the graphql package available to us through npm to parse our graphql language file and resolve our initial query. const { graphql, buildSchema } = require('gr…