import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
protected GraphQLOutputType generateOutputType(Object object) {
    //An enum is a special case in both java and graphql,
    //and must be checked for while generating other kinds of types
    GraphQLEnumType enumType = generateEnumType(object);
    if (enumType != null) {
        return enumType;
    }
    
    List<GraphQLFieldDefinition> fields = getOutputFieldDefinitions(object);
    if (fields == null || fields.isEmpty()) {
        return null;
    }
    
    String typeName = getGraphQLTypeNameOrIdentityCode(object);
    GraphQLObjectType.Builder builder = newObject()
            .name(typeName)
            .fields(fields)
            .description(getTypeDescription(object));
    
    GraphQLInterfaceType[] interfaces = getInterfaces(object);
    if (interfaces != null) {
        builder.withInterfaces(interfaces);
    }
    return builder.build();
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
protected GraphQLInterfaceType generateInterfaceType(Object object) {
    List<GraphQLFieldDefinition> fieldDefinitions = getOutputFieldDefinitions(object);
    if (fieldDefinitions == null || fieldDefinitions.isEmpty()) {
        return null;
    }
    String name = getGraphQLTypeNameOrIdentityCode(object);
    TypeResolver typeResolver = getTypeResolver(object);
    String description = getTypeDescription(object);
    if (name == null || fieldDefinitions == null || typeResolver == null) {
        return null;
    }
    GraphQLInterfaceType.Builder builder = GraphQLInterfaceType.newInterface()
            .description(description)
            .fields(fieldDefinitions)
            .name(name)
            .typeResolver(typeResolver);
    return builder.build();
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
protected void getInterfaces(
        final Map<Class<?>, GraphQLInterfaceType> interfaceMap,
        final Class<?> clazz) {
    
    for (Class<?> intf : clazz.getInterfaces()) {        
        if (interfaceMap.containsKey(intf)) {
            continue;
        }
        GraphQLInterfaceType iType = getContext().getInterfaceType(intf);
        if (iType != null) {
            interfaceMap.put(intf, iType);
        }
        getInterfaces(interfaceMap, intf);
    }
    Class<?> superClazz = clazz.getSuperclass();
    if (superClazz != null && superClazz != Object.class) {
        getInterfaces(interfaceMap, superClazz);
    }
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
@Override
public GraphQLObjectType toGraphQLType(String typeName, AnnotatedType javaType, Set<Type> abstractTypes, OperationMapper operationMapper, BuildContext buildContext) {
    GraphQLObjectType.Builder typeBuilder = newObject()
            .name(typeName)
            .description(buildContext.typeInfoGenerator.generateTypeDescription(javaType));

    GraphQLType graphQLType = javaType.getAnnotation(GraphQLType.class);
    List<String> fieldOrder = graphQLType != null ? Arrays.asList(graphQLType.fieldOrder()) : Collections.emptyList();
    List<GraphQLFieldDefinition> fields = getFields(javaType, fieldOrder, buildContext, operationMapper);
    fields.forEach(typeBuilder::field);

    List<GraphQLOutputType> interfaces = getInterfaces(javaType, abstractTypes, fields, buildContext, operationMapper);
    interfaces.forEach(inter -> {
        if (inter instanceof GraphQLInterfaceType) {
            typeBuilder.withInterface((GraphQLInterfaceType) inter);
        } else {
            typeBuilder.withInterface((GraphQLTypeReference) inter);
        }
    });

    GraphQLObjectType type = new MappedGraphQLObjectType(typeBuilder.build(), javaType);
    interfaces.forEach(inter -> buildContext.typeRepository.registerCovariantType(inter.getName(), javaType, type));
    buildContext.typeRepository.registerObjectType(type);
    return type;
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
ProtoRegistry build() {
  ImmutableListMultimap<String, TypeModification> modificationsMap =
      ImmutableListMultimap.copyOf(
          this.typeModifications
              .stream()
              .map(
                  modification ->
                      new SimpleImmutableEntry<>(modification.getTypeName(), modification))
              .collect(Collectors.toList()));

  final BiMap<String, GraphQLType> mapping = HashBiMap.create();

  GraphQLInterfaceType nodeInterface =
      new Relay()
          .nodeInterface(
              env -> {
                Relay.ResolvedGlobalId resolvedGlobalId =
                    new Relay().fromGlobalId(env.getArguments().get("id").toString());
                return (GraphQLObjectType) mapping.get(resolvedGlobalId.getType());
              });

  mapping.putAll(
      modifyTypes(
          getMap(fileDescriptors, descriptors, enumDescriptors, nodeInterface),
          modificationsMap));

  return new ProtoRegistry(mapping, nodeInterface);
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
private static BiMap<String, GraphQLType> getMap(
    List<FileDescriptor> fileDescriptors,
    List<Descriptor> descriptors,
    List<EnumDescriptor> enumDescriptors,
    GraphQLInterfaceType nodeInterface) {
  HashBiMap<String, GraphQLType> mapping = HashBiMap.create(getEnumMap(enumDescriptors));
  LinkedList<Descriptor> loop = new LinkedList<>(descriptors);

  Set<FileDescriptor> fileDescriptorSet = extractDependencies(fileDescriptors);

  for (FileDescriptor fileDescriptor : fileDescriptorSet) {
    loop.addAll(fileDescriptor.getMessageTypes());
    mapping.putAll(getEnumMap(fileDescriptor.getEnumTypes()));
  }

  while (!loop.isEmpty()) {
    Descriptor descriptor = loop.pop();
    if (!mapping.containsKey(descriptor.getFullName())) {
      mapping.put(
          ProtoToGql.getReferenceName(descriptor),
          ProtoToGql.convert(descriptor, nodeInterface));
      GqlInputConverter inputConverter =
          GqlInputConverter.newBuilder().add(descriptor.getFile()).build();
      mapping.put(
          GqlInputConverter.getReferenceName(descriptor),
          inputConverter.getInputType(descriptor));
      loop.addAll(descriptor.getNestedTypes());

      mapping.putAll(getEnumMap(descriptor.getEnumTypes()));
    }
  }
  return ImmutableBiMap.copyOf(mapping);
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
public GraphQLObjectMapper(ITypeFactory typeFactory, List<IGraphQLTypeMapper> graphQLTypeMappers, Optional<ITypeNamingStrategy> typeNamingStrategy,
		Optional<IDataFetcherFactory> dataFetcherFactory, Optional<Class<? extends IDataFetcher>> defaultMethodDataFetcher,
		Map<Class<?>, Class<? extends DefaultTypeConverter>> typeConverters, List<Class<?>> relayNodeTypes) {

	this.typeFactory = typeFactory;
	this.relayNodeTypes = relayNodeTypes;
	this.defaultTypeConverters = typeConverters;
	this.setDefaultMethodDataFetcher(defaultMethodDataFetcher.or(DefaultMethodDataFetcher.class));

	if (typeNamingStrategy.isPresent()) {
		this.typeNamingStrategy = typeNamingStrategy.get();
	}

	if (dataFetcherFactory.isPresent()) {
		this.setDataFetcherFactory(dataFetcherFactory.get());
	}

	ImmutableList.Builder<IGraphQLTypeMapper> interfaceTypeMappersBuilder = ImmutableList.builder();
	Map<Type, IGraphQLTypeMapper> classTypeMappersBuilder = Maps.newHashMap();

	for (IGraphQLTypeMapper mapper : graphQLTypeMappers) {
		GraphQLTypeMapper mapperAnnotation = mapper.getClass().getAnnotation(GraphQLTypeMapper.class);
		if (mapperAnnotation.type().isInterface()) {
			interfaceTypeMappersBuilder.add(mapper);
		} else {
			classTypeMappersBuilder.put(mapperAnnotation.type(), mapper);
		}
	}
	this.interfaceTypeMappers = interfaceTypeMappersBuilder.build();
	this.classTypeMappers = ImmutableMap.copyOf(classTypeMappersBuilder);

	// store the Node type interface mapping
	nodeTypeName = getTypeNamingStrategy().getTypeName(this, INode.class);
	this.getOutputTypeCache().put(nodeTypeName,
			GraphQLInterfaceType.newInterface()
					.name(nodeTypeName)
					.typeResolver(this)
					.field(GraphQLFieldDefinition.newFieldDefinition().name("id").type(Scalars.GraphQLString).build())
					.build());
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
@Test
public void testGraphQLInterfaces() throws JsonProcessingException {
    logger.debug("testGraphQLInterfaces");
    Object interfaceType = generator.getInterfaceType(InterfaceChild.class);
    assertThat(interfaceType, instanceOf(GraphQLInterfaceType.class));
    
    GraphQLObjectType queryType = newObject()
            .name("testQuery")
            .field(newFieldDefinition()
                    .type((GraphQLOutputType) interfaceType)
                    .name("testObj")
                    .staticValue(new InterfaceImpl())
                    .build())
            .build();
    GraphQLSchema testSchema = GraphQLSchema.newSchema()
            .query(queryType)
            .build();
    
    String queryString = 
    "{"
    + "  testObj {"
    + "    parent"
    + "    child"
    + "  }"
    + "}";
    ExecutionResult queryResult = new GraphQL(testSchema).execute(queryString);
    assertThat(queryResult.getErrors(), is(empty()));
    Map<String, Object> resultMap = (Map<String, Object>) queryResult.getData();
    if (logger.isDebugEnabled()) {
        logger.debug("testGraphQLInterfaces resultMap {}", prettyPrint(resultMap));
    }
    
    assertThat(((Map<String, Object>)resultMap.get("testObj")),
            equalTo((Map<String, Object>) new HashMap<String, Object>() {{
                put("parent", "parent");
                put("child", "child");
            }}));
    assertThat(((Map<String, Object>)resultMap.get("testObj")).size(),
            is(2));
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
@Override
public GraphQLInterfaceType toGraphQLType(String typeName, AnnotatedType javaType, Set<Type> abstractTypes, OperationMapper operationMapper, BuildContext buildContext) {
    GraphQLInterfaceType.Builder typeBuilder = newInterface()
            .name(typeName)
            .description(buildContext.typeInfoGenerator.generateTypeDescription(javaType));

    GraphQLInterface graphQLInterface = javaType.getAnnotation(GraphQLInterface.class);
    List<String> fieldOrder = graphQLInterface != null ? Arrays.asList(graphQLInterface.fieldOrder()) : Collections.emptyList();
    List<GraphQLFieldDefinition> fields = objectTypeMapper.getFields(javaType, fieldOrder, buildContext, operationMapper);
    fields.forEach(typeBuilder::field);

    typeBuilder.typeResolver(buildContext.typeResolver);
    GraphQLInterfaceType type = new MappedGraphQLInterfaceType(typeBuilder.build(), javaType);

    if (javaType.isAnnotationPresent(GraphQLInterface.class)) {
        GraphQLInterface meta = javaType.getAnnotation(GraphQLInterface.class);
        if (meta.implementationAutoDiscovery()) {
            String[] scanPackages = meta.scanPackages();
            if (scanPackages.length == 0 && Utils.arrayNotEmpty(buildContext.basePackages)) {
                scanPackages = buildContext.basePackages;
            }
            ClassUtils.findImplementations(javaType, scanPackages).forEach(impl ->
                    getImplementingType(impl, abstractTypes, operationMapper, buildContext)
                            .ifPresent(implType -> buildContext.typeRepository.registerDiscoveredCovariantType(type.getName(), impl, implType)));

        }
    }
    return type;
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
@Override
public boolean equals(Object that) {
    if (that == this) return true;
    boolean baseEquals = that instanceof GraphQLInterfaceType &&
            ((GraphQLInterfaceType) that).getName().equals(getName()) &&
            ((GraphQLInterfaceType) that).getFieldDefinitions().equals(getFieldDefinitions());

    return baseEquals && (!(that instanceof MappedGraphQLInterfaceType) ||
            GenericTypeReflector.equals(((MappedGraphQLInterfaceType) that).getJavaType(), this.getJavaType()));
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
/**
 * The shared context accessible throughout the schema generation process
 *
 * @param operationRepository Repository that can be used to fetch all known (singleton and domain) queries
 * @param typeMappers Repository of all registered {@link io.leangen.graphql.generator.mapping.TypeMapper}s
 * @param environment The globally shared environment
 * @param interfaceStrategy The strategy deciding what Java type gets mapped to a GraphQL interface
 * @param basePackages The base (root) package of the entire project
 * @param typeInfoGenerator Generates type name/description
 * @param valueMapperFactory The factory used to produce {@link io.leangen.graphql.metadata.strategy.value.ValueMapper} instances
 * @param inputFieldStrategy The strategy deciding how GraphQL input fields are discovered from Java types
 * @param knownTypes The cache of known type names
 * @param relayMappingConfig Relay specific configuration
 */
public BuildContext(OperationRepository operationRepository, TypeMapperRepository typeMappers,
                    GlobalEnvironment environment,
                    InterfaceMappingStrategy interfaceStrategy, String[] basePackages,
                    TypeInfoGenerator typeInfoGenerator, ValueMapperFactory valueMapperFactory,
                    InputFieldDiscoveryStrategy inputFieldStrategy, Set<GraphQLType> knownTypes,
                    RelayMappingConfig relayMappingConfig) {
    this.operationRepository = operationRepository;
    this.typeRepository = environment.typeRepository;
    this.typeMappers = typeMappers;
    this.typeInfoGenerator = typeInfoGenerator;
    this.relay = environment.relay;
    this.node = knownTypes.stream()
            .filter(GraphQLUtils::isRelayNodeInterface)
            .findFirst().map(type -> (GraphQLInterfaceType) type)
            .orElse(relay.nodeInterface(new RelayNodeTypeResolver(this.typeRepository, typeInfoGenerator)));
    this.typeResolver = new DelegatingTypeResolver(this.typeRepository, typeInfoGenerator);
    this.interfaceStrategy = interfaceStrategy;
    this.basePackages = basePackages;
    this.valueMapperFactory = valueMapperFactory;
    this.inputFieldStrategy = inputFieldStrategy;
    this.globalEnvironment = environment;
    this.knownTypes = knownTypes.stream()
            .filter(type -> type instanceof GraphQLOutputType)
            .map(GraphQLType::getName)
            .collect(Collectors.toSet());
    this.knownInputTypes = knownTypes.stream()
            .filter(type -> type instanceof GraphQLInputType)
            .map(GraphQLType::getName)
            .collect(Collectors.toSet());
    this.relayMappingConfig = relayMappingConfig;
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
private Map<String, String> getNodeQueriesByType(List<Operation> queries,
                                                 List<GraphQLFieldDefinition> graphQlQueries,
                                                 TypeRepository typeRepository, GraphQLInterfaceType node) {

    Map<String, String> nodeQueriesByType = new HashMap<>();
    Map<String, String> directNodeQueriesByType = new HashMap<>();

    for (int i = 0; i < queries.size(); i++) {
        Operation query = queries.get(i);
        GraphQLFieldDefinition graphQlQuery = graphQlQueries.get(i);

        if (graphQlQuery.getArgument(GraphQLId.RELAY_ID_FIELD_NAME) != null
                && GraphQLUtils.isRelayId(graphQlQuery.getArgument(GraphQLId.RELAY_ID_FIELD_NAME))
                && query.getResolver(GraphQLId.RELAY_ID_FIELD_NAME) != null) {

            GraphQLType unwrappedQueryType = GraphQLUtils.unwrapNonNull(graphQlQuery.getType());
            if (unwrappedQueryType instanceof GraphQLObjectType
                    && ((GraphQLObjectType) unwrappedQueryType).getInterfaces().contains(node)) {
                directNodeQueriesByType.put(unwrappedQueryType.getName(), query.getName());
            } else if (unwrappedQueryType instanceof GraphQLInterfaceType || unwrappedQueryType instanceof GraphQLUnionType) {
                typeRepository.getOutputTypes(unwrappedQueryType.getName()).stream()
                        .map(MappedType::getAsObjectType)
                        .filter(implementation -> implementation.getInterfaces().contains(node))
                        .forEach(nodeType -> nodeQueriesByType.put(nodeType.getName(), query.getName()));
            }
        }
    }
    //this way more precise queries (returning node types directly) override interface/union queries
    nodeQueriesByType.putAll(directNodeQueriesByType);
    return nodeQueriesByType;
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
public static boolean isRelayNodeInterface(GraphQLType node) {
    return node instanceof GraphQLInterfaceType
            && node.getName().equals(Relay.NODE)
            && ((GraphQLInterfaceType) node).getFieldDefinitions().size() == 1
            && ((GraphQLInterfaceType) node).getFieldDefinition("id") != null
            && isRelayId(((GraphQLInterfaceType) node).getFieldDefinition("id"));
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
private void addPhantasmCast(GraphQLInterfaceType.Builder builder,
                             Entry<FacetRecord, FacetFields> resolved) {
    builder.field(GraphQLFieldDefinition.newFieldDefinition()
                                        .name(String.format("as%s",
                                                            WorkspacePresentation.toTypeName(resolved.getKey()
                                                                                                     .getName())))
                                        .description(String.format("Cast to the %s facet",
                                                                   resolved.getKey()
                                                                           .getName()))
                                        .type(new GraphQLTypeReference(resolved.getValue()
                                                                               .getName()))
                                        .build());
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
private GraphQLInterfaceType existentialType(Map<FacetRecord, FacetFields> resolved,
                                             PhantasmProcessor processor) {
    GraphQLInterfaceType.Builder builder = GraphQLInterfaceType.newInterface();
    builder.name("Existential")
           .description("The Existential interface type")
           .field(GraphQLFieldDefinition.newFieldDefinition()
                                        .name("id")
                                        .description("Existential id")
                                        .type(GraphQLUuid)
                                        .build())
           .field(GraphQLFieldDefinition.newFieldDefinition()
                                        .name("name")
                                        .description("Existential name")
                                        .type(GraphQLString)
                                        .build())
           .field(GraphQLFieldDefinition.newFieldDefinition()
                                        .name("description")
                                        .description("Existential description")
                                        .type(GraphQLString)
                                        .build())
           .field(GraphQLFieldDefinition.newFieldDefinition()
                                        .name("updatedBy")
                                        .description("Agency that updated the Existential")
                                        .type(new GraphQLTypeReference("Agency"))
                                        .build())
           .typeResolver(processor);

    resolved.entrySet()
            .forEach(e -> addPhantasmCast(builder, e));
    return builder.build();
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
static GraphQLObjectType convert(Descriptor descriptor, GraphQLInterfaceType nodeInterface) {
  ImmutableList<GraphQLFieldDefinition> graphQLFieldDefinitions =
      descriptor.getFields().stream().map(FIELD_CONVERTER).collect(toImmutableList());

  Optional<GraphQLFieldDefinition> relayId =
      descriptor
          .getFields()
          .stream()
          .filter(field -> field.getOptions().hasExtension(RelayOptionsProto.relayOptions))
          .map(
              field ->
                  GraphQLFieldDefinition.newFieldDefinition()
                      .name("id")
                      .type(new GraphQLNonNull(GraphQLID))
                      .description("Relay ID")
                      .dataFetcher(
                          data ->
                              new Relay()
                                  .toGlobalId(
                                      getReferenceName(descriptor),
                                      data.<Message>getSource().getField(field).toString()))
                      .build())
          .findFirst();

  if (relayId.isPresent()) {
    return GraphQLObjectType.newObject()
        .name(getReferenceName(descriptor))
        .withInterface(nodeInterface)
        .field(relayId.get())
        .fields(
            graphQLFieldDefinitions
                .stream()
                .map(
                    field ->
                        field.getName().equals("id")
                            ? GraphQLFieldDefinition.newFieldDefinition()
                                .name("rawId")
                                .description(field.getDescription())
                                .type(field.getType())
                                .dataFetcher(field.getDataFetcher())
                                .build()
                            : field)
                .collect(ImmutableList.toImmutableList()))
        .build();
  }

  return GraphQLObjectType.newObject()
      .name(getReferenceName(descriptor))
      .fields(graphQLFieldDefinitions.isEmpty() ? STATIC_FIELD : graphQLFieldDefinitions)
      .build();
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
private ProtoRegistry(BiMap<String, GraphQLType> mapping, GraphQLInterfaceType nodeInterface) {
  this.mapping = mapping;
  this.nodeInterface = nodeInterface;
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
GraphQLInterfaceType getRelayNode() {
  return nodeInterface;
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
protected GraphQLInterfaceType[] getInterfaces(Object object) {
    return getStrategies().getInterfacesStrategy().getInterfaces(object);
}
 

import graphql.schema.GraphQLInterfaceType; //导入依赖的package包/类
@Override
protected GraphQLInterfaceType generateInterfaceType(Object object) {
    return getNextGen().generateInterfaceType(object);
}