GRAND 堆栈查询始终返回 NULL

Posted 2023-03-10

【中文标题】GRAND 堆栈查询始终返回 NULL

【英文标题】：GRAND Stack queries always returns NULL

【发布时间】：2021-09-28 11:09:20

【问题描述】：

我正在尝试使用远程 neo4j 数据库设置 GRAND STACK 项目，以下是非常基本的连接代码：

const  Neo4jGraphQL  = require("@neo4j/graphql");
const neo4j = require("neo4j-driver");
const  ApolloServer  = require("apollo-server");

const typeDefs = `
    type Feature 
        id: Int
        name: String @cypher(statement: "MATCH (n:feature) RETURN n LIMIT 25")
    

    type Symptom 
        id: Int
        name: String @cypher(statement: "MATCH (n:symptom) RETURN n LIMIT 25")
    
    type Query 
        features: [Feature],
        symptoms: [Symptom]
    
`;

const driver = neo4j.driver(
    "bolt://serverip:7687",
    neo4j.auth.basic("neo4j", "hello-hello-hello")
);

const neoSchema = new Neo4jGraphQL( typeDefs, driver );

// const resolvers = 
//   Query: 
//     feature: () => feature,
//   ,
// ;

const server = new ApolloServer(
    schema: neoSchema.schema,
    context: ( req ) => ( req ),
    // resolvers
);

server.listen(4000).then(() => console.log("Online"));

我正在做以下查询：

query Query 
  symptoms 
    name
  

查询总是返回 null。任何帮助将不胜感激。谢谢。

【参考方案1】：

Neo4j GraphQL 会为您自动生成查询和突变。在您的 typeDefs 中删除手动查询：

type Query 
    features: [Feature]
    symptoms: [Symptom]