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@neo4j/graphql
Advanced tools
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations.
$ npm install @neo4j/graphql
⚠ graphql
& neo4j-driver
are peerDependency(s)
$ npm install graphql neo4j-driver
Our TypeScript source is transpiled into Common JS, this means you can use the require
syntax;
const { Neo4jGraphQL } = require("@neo4j/graphql");
Create schema and serve over port 4000 using Apollo Server:
const { Neo4jGraphQL } = require("@neo4j/graphql");
const neo4j = require("neo4j-driver");
const { ApolloServer } = require("apollo-server");
const typeDefs = `
type Movie {
title: String
year: Int
imdbRating: Float
genres: [Genre!]! @relationship(type: "IN_GENRE", direction: OUT)
}
type Genre {
name: String
movies: [Movie!]! @relationship(type: "IN_GENRE", direction: IN)
}
`;
const driver = neo4j.driver("bolt://localhost:7687", neo4j.auth.basic("neo4j", "letmein"));
const neoSchema = new Neo4jGraphQL({ typeDefs, driver });
async function main() {
const schema = await neoSchema.getSchema();
const server = new ApolloServer({
schema,
context: ({ req }) => ({ req }),
});
await server.listen(4000);
console.log("Online");
}
mutation {
createMovies(input: [{ title: "The Matrix", year: 1999, imdbRating: 8.7 }]) {
movies {
title
}
}
}
mutation {
updateMovies(
where: { title: "The Matrix" }
connect: { genres: { where: { node: { OR: [{ name: "Sci-fi" }, { name: "Action" }] } } } }
) {
movies {
title
}
}
}
mutation {
createMovies(
input: [
{
title: "The Matrix"
year: 1999
imdbRating: 8.7
genres: { connect: { where: { node: { AND: [{ name: "Sci-fi" }, { name: "Action" }] } } } }
}
]
) {
movies {
title
}
}
}
query {
movies {
title
genres {
name
}
}
}
Define, nested & related, authorization rules such as; “grant update access to all moderators of a post”;
type User {
id: ID!
username: String!
}
type Post {
id: ID!
title: String!
moderator: User @relationship(type: "MODERATES_POST", direction: IN)
}
extend type Post @auth(rules: [{ allow: [{ moderator: { id: "$jwt.sub" } }], operations: [UPDATE] }])
Specify rules on fields;
type User {
id: ID!
username: String!
}
extend type User {
password: String! @auth(rules: [{ OR: [{ allow: { id: "$jwt.sub" } }, { roles: ["admin"] }] }])
}
Use RBAC;
type Customer @auth(rules: [{ operations: [READ], roles: ["read:customer"] }]) {
id: ID
name: String
password: String @auth(rules: [{ operations: [READ], roles: ["admin"] }])
}
type Invoice @auth(rules: [{ operations: [READ], roles: ["read:invoice"] }]) {
id: ID
csv: String
total: Int
}
FAQs
A GraphQL to Cypher query execution layer for Neo4j and JavaScript GraphQL implementations
The npm package @neo4j/graphql receives a total of 11,509 weekly downloads. As such, @neo4j/graphql popularity was classified as popular.
We found that @neo4j/graphql demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 6 open source maintainers collaborating on the project.
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