Associating the wiring

constructor2.java

// Load Schema
final SchemaParser schemaParser = new SchemaParser();
final TypeDefinitionRegistry registry;
try (final InputStream inputStream = 
     getClass().getClassLoader().getResourceAsStream("schema.graphqls");
     final InputStreamReader streamReader = new InputStreamReader(inputStream)) {
       registry = schemaParser.parse(streamReader);
    } catch (Exception e) {
      throw new IllegalStateException("Could not parse graphql schema", e);
    }
// Create Wiring
final RuntimeWiring wiring = RuntimeWiring.newRuntimeWiring()
  .type("QueryType", wiring -> wiring
         .dataFetcher("company", new CompanyQuery(companies))
         .dataFetcher("companies", new CompaniesQuery(companies))
   )
   .type("MutationType", wiring -> wiring
          .dataFetcher("company", new CompanyMutation(companies))
          .dataFetcher("companyDelete", new CompanyDelete(companies))
   )
   .build();
// Associate...
SchemaGenerator schemaGenerator = new SchemaGenerator();
graphql = GraphQL.newGraphQL(schemaGenerator.makeExecutableSchema(registry, wiring)).build();