buildNeo4jResolvers

Generates any unprovided resolvers for query and mutation types that are generated or that use a @cypher directive.

API Reference

  • typeDefs (required): Your GraphQL type definitions in SDL format.

  • resolvers(required): A resolvers object to augment.

  • query (default: true): A Boolean controlling whether to generate resolvers for query types.

  • mutation (default: true): A Boolean controlling whether to generate resolvers for mutation types.

  • bindingKey (default: 'neo4j') The key of the binding (stored in your server's context object) to be used within generated resolvers for operation delegation.

Example

import { buildNeo4jResolvers } from 'neo4j-graphql-binding';
const typeDefs = `
type Technology @model {
name: String! @unique
integration: [Technology] @relation(name: "HAPPINESS", direction: OUT)
integrationCount: Int @cypher(statement: """
MATCH (this)-[:HAPPINESS]->(t:Technology)
RETURN count(t)
""")
}
type Query {
Technology: [Technology] @cypher(statement: """
MATCH (t:Technology) RETURN t
""")
}
type Mutation {
deleteTechnology(id: ID!): Boolean @cypher(statement: """
MATCH (t: Technology {id: $id})
DETACH DELETE t
RETURN TRUE
""")
}
schema {
query: Query
mutation: Mutation
}
`;
const augmented = buildNeo4jResolvers({
typeDefs: typeDefs,
driver: driver
});

For every query or mutation type using a @cypher directive, or for those generated by buildNeo4jTypeDefs, a resolver will be created if one is not provided.

Query: {
Technology: (obj, params, ctx, info) => {
return ctx.neo4j.query.Technology(params, info);
}
},
Mutation: {
createTechnology: (obj, params, ctx, info) => {
return ctx.neo4j.mutation.createTechnology(params, info);
},
deleteTechnology: (obj, params, ctx, info) => {
return ctx.neo4j.mutation.deleteTechnology(params, info);
}
}