graphql-java/src/test/java/HelloWorld.java at root-node-errors · aeonve/graphql-java

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import graphql.ExecutionResult;

import graphql.GraphQL;

import graphql.schema.GraphQLSchema;

import graphql.schema.StaticDataFetcher;

import graphql.schema.idl.RuntimeWiring;

import graphql.schema.idl.SchemaGenerator;

import graphql.schema.idl.SchemaParser;

import graphql.schema.idl.TypeDefinitionRegistry;

import static graphql.schema.idl.RuntimeWiring.newRuntimeWiring;

public class HelloWorld {

public static void main(String[] args) {

String schema = "type Query{hello: String}";

SchemaParser schemaParser = new SchemaParser();

TypeDefinitionRegistry typeDefinitionRegistry = schemaParser.parse(schema);

RuntimeWiring runtimeWiring = newRuntimeWiring()

.type("Query", builder -> builder.dataFetcher("hello", new StaticDataFetcher("world")))

.build();

SchemaGenerator schemaGenerator = new SchemaGenerator();

GraphQLSchema graphQLSchema = schemaGenerator.makeExecutableSchema(typeDefinitionRegistry, runtimeWiring);

GraphQL build = GraphQL.newGraphQL(graphQLSchema).build();

ExecutionResult executionResult = build.execute("{hello}");

System.out.println(executionResult.getData().toString());

// Prints: {hello=world}

}

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