graphql.schema.GraphQLScalarType Java Examples

private TypePrinter<GraphQLScalarType> scalarPrinter() {
    return (out, type, visibility) -> {
        if (!options.isIncludeScalars()) {
            return;
        }
        boolean printScalar;
        if (ScalarInfo.isStandardScalar(type)) {
            printScalar = false;
            //noinspection RedundantIfStatement
            if (options.isIncludeExtendedScalars() && !ScalarInfo.isGraphqlSpecifiedScalar(type)) {
                printScalar = true;
            }
        } else {
            printScalar = true;
        }
        if (printScalar) {
            if (shouldPrintAsAst(type.getDefinition())) {
                printAsAst(out, type.getDefinition(), type.getExtensionDefinitions());
            } else {
                printComments(out, type, "");
                out.format("scalar %s%s\n\n", type.getName(), directivesString(GraphQLScalarType.class, type.getDirectives()));
            }
        }
    };
}
 

@Override
public int getComplexity(ResolvedField node, int childScore) {
    Resolver resolver = node.getResolver();
    if (resolver == null || Utils.isEmpty(resolver.getComplexityExpression())) {
        GraphQLType fieldType = node.getFieldType();
        if (fieldType instanceof GraphQLScalarType || fieldType instanceof GraphQLEnumType) {
            return 1;
        }
        if (GraphQLUtils.isRelayConnectionType(fieldType)) {
            Integer pageSize = getPageSize(node.getArguments());
            if (pageSize != null) {
                return pageSize * childScore;
            }
        }
        return 1 + childScore;
    }
    Bindings bindings = engine.createBindings();
    bindings.putAll(node.getArguments());
    bindings.put("childScore", childScore);
    try {
        return ((Number) engine.eval(resolver.getComplexityExpression(), bindings)).intValue();
    } catch (Exception e) {
        throw new IllegalArgumentException(String.format("Complexity expression \"%s\" on field %s could not be evaluated",
                resolver.getComplexityExpression(), node.getName()), e);
    }
}
 

private static Map<Type, GraphQLScalarType> getScalarMapping() {
    Map<Type, GraphQLScalarType> scalarMapping = new HashMap<>();
    scalarMapping.put(ObjectNode.class, JsonObjectNode);
    scalarMapping.put(POJONode.class, JsonObjectNode);
    scalarMapping.put(JsonNode.class, JsonAnyNode);
    return Collections.unmodifiableMap(scalarMapping);
}
 

@Override
public GraphQLType getDefaultType(Object object, TypeKind typeKind) {
    GraphQLScalarType scalar = getDefaultScalarType(object);
    if (scalar != null) return scalar;
    if (TypeKind.OBJECT.equals(typeKind)) {
        return getDefaultOutputType(object);
    }
    return null;
}
 

public static void assertListOfListOfInt(GraphQLType type) {
    Assert.assertThat(type, instanceOf(GraphQLList.class));
    GraphQLType wrappedType = ((GraphQLList) type).getWrappedType();
    Assert.assertThat(wrappedType, instanceOf(GraphQLList.class));
    GraphQLType integerType = ((GraphQLList) wrappedType).getWrappedType();
    Assert.assertThat(integerType, instanceOf(GraphQLScalarType.class));
}
 

@Test
public void testScalarsOutput() {
    logger.debug("testScalarsOutput {} {}", clazz, expected.getName());
    Assert.assertThat(generator.getOutputType(clazz),
            instanceOf(GraphQLScalarType.class));
    Assert.assertThat((GraphQLScalarType)generator.getOutputType(clazz),
            is(expected));
}
 

@Test
public void testScalarsInput() {
    logger.debug("testScalarsInput {} {}", clazz, expected.getName());
    Assert.assertThat(generator.getInputType(clazz),
            instanceOf(GraphQLScalarType.class));
    Assert.assertThat((GraphQLScalarType)generator.getInputType(clazz),
            is(expected));
}
 

public void assertListOfInt(Object objectType) {
    Assert.assertThat(objectType, instanceOf(GraphQLObjectType.class));
    Assert.assertThat(objectType, not(instanceOf(GraphQLList.class)));
    GraphQLFieldDefinition fieldDefinition = ((GraphQLObjectType) objectType).getFieldDefinition("integers");
    Assert.assertThat(fieldDefinition, notNullValue());
    GraphQLOutputType outputType = fieldDefinition.getType();

    Assert.assertThat(outputType, CoreMatchers.instanceOf(GraphQLList.class));
    GraphQLType wrappedType = ((GraphQLList) outputType).getWrappedType();
    Assert.assertThat(wrappedType, instanceOf(GraphQLScalarType.class));
    Assert.assertThat((GraphQLScalarType)wrappedType, is(Scalars.GraphQLInt));
}
 

@Override
public GraphQLScalarType toGraphQLType(String typeName, AnnotatedType javaType, TypeMappingEnvironment env) {
    BuildContext buildContext = env.buildContext;

    GraphQLDirective[] directives = buildContext.directiveBuilder.buildScalarTypeDirectives(javaType, buildContext.directiveBuilderParams()).stream()
            .map(directive -> env.operationMapper.toGraphQLDirective(directive, buildContext))
            .toArray(GraphQLDirective[]::new);
    return ClassUtils.isSuperClass(Map.class, javaType)
            ? Scalars.graphQLMapScalar(typeName, directives)
            : Scalars.graphQLObjectScalar(typeName, directives);
}
 

private String getTypeName(AnnotatedType javaType, AnnotatedType graphQLType, TypeInfoGenerator typeInfoGenerator, MessageBundle messageBundle) {
    if (ClassUtils.isSuperClass(GraphQLScalarType.class, graphQLType)) {
        return typeInfoGenerator.generateScalarTypeName(javaType, messageBundle);
    }
    if (ClassUtils.isSuperClass(GraphQLEnumType.class, graphQLType)) {
        return typeInfoGenerator.generateEnumTypeName(javaType, messageBundle);
    }
    if (ClassUtils.isSuperClass(GraphQLInputType.class, graphQLType)) {
        return typeInfoGenerator.generateInputTypeName(javaType, messageBundle);
    }
    return typeInfoGenerator.generateTypeName(javaType, messageBundle);
}
 

private static Map<Type, GraphQLScalarType> getScalarMapping() {
    Map<Type, GraphQLScalarType> scalarMapping = new HashMap<>();
    scalarMapping.put(JsonObject.class, JsonObjectNode);
    scalarMapping.put(JsonElement.class, JsonAnyNode);
    scalarMapping.put(JsonPrimitive.class, JsonPrimitiveNode);
    return Collections.unmodifiableMap(scalarMapping);
}
 

@Override
public GraphQLScalarType toGraphQLInputType(AnnotatedType javaType, Set<Class<? extends TypeMapper>> mappersToSkip, TypeMappingEnvironment env) {
    if (POJONode.class.equals(javaType.getType())) {
        throw new UnsupportedOperationException(POJONode.class.getSimpleName() + " can not be used as input");
    }
    return toGraphQLType(javaType, mappersToSkip, env);
}
 

public static GraphQLScalarType bigIntScalar() {
  return GraphQLScalarType.newScalar()
      .name("BigInt")
      .description("A BigInt (UInt256) scalar")
      .coercing(BIG_INT_COERCING)
      .build();
}
 

private static Map<Type, GraphQLScalarType> getScalarMapping() {
    Map<Type, GraphQLScalarType> scalarMapping = new HashMap<>();
    scalarMapping.put(TextNode.class, JsonTextNode);
    scalarMapping.put(BooleanNode.class, JsonBooleanNode);
    scalarMapping.put(BinaryNode.class, JsonBinaryNode);
    scalarMapping.put(BigIntegerNode.class, JsonBigIntegerNode);
    scalarMapping.put(IntNode.class, JsonIntegerNode);
    scalarMapping.put(ShortNode.class, JsonShortNode);
    scalarMapping.put(DecimalNode.class, JsonDecimalNode);
    scalarMapping.put(FloatNode.class, JsonFloatNode);
    scalarMapping.put(DoubleNode.class, JsonDoubleNode);
    scalarMapping.put(NumericNode.class, JsonDecimalNode);
    return Collections.unmodifiableMap(scalarMapping);
}
 

public static GraphQLScalarType graphQLMapScalar(String name, GraphQLDirective[] directives) {
    return GraphQLScalarType.newScalar()
            .name(name)
            .description("Built-in scalar for map-like structures")
            .withDirectives(directives)
            .coercing(MAP_SCALAR_COERCION)
            .build();
}
 

public static GraphQLScalarType graphQLObjectScalar(String name, GraphQLDirective[] directives) {
    return GraphQLScalarType.newScalar()
            .name(name)
            .description("Built-in scalar for dynamic values")
            .withDirectives(directives)
            .coercing(OBJECT_SCALAR_COERCION)
            .build();
}
 

@Test
public void testMissingGenerics() {
    Type type = TypeFactory.parameterizedClass(EchoService.class, MissingGenerics.class);
    GraphQLSchema schema = new TestSchemaGenerator()
            .withValueMapperFactory(valueMapperFactory)
            .withOperationsFromSingleton(new EchoService(), type, new PublicResolverBuilder())
            .withTypeTransformer(new DefaultTypeTransformer(true, true))
            .withTypeAdapters(new MapToListTypeAdapter())
            .generate();

    GraphQLFieldDefinition query = schema.getQueryType().getFieldDefinition("echo");
    GraphQLObjectType output = (GraphQLObjectType) query.getType();
    assertMapOf(output.getFieldDefinition("raw").getType(), GraphQLScalarType.class, GraphQLScalarType.class);
    assertMapOf(output.getFieldDefinition("unbounded").getType(), GraphQLScalarType.class, GraphQLScalarType.class);

    GraphQLInputObjectType input = (GraphQLInputObjectType) query.getArgument("in").getType();
    assertInputMapOf(input.getFieldDefinition("raw").getType(), GraphQLScalarType.class, GraphQLScalarType.class);
    assertInputMapOf(input.getFieldDefinition("unbounded").getType(), GraphQLScalarType.class, GraphQLScalarType.class);

    GraphQL runtime = GraphQL.newGraphQL(schema).build();
    ExecutionResult result = runtime.execute("{" +
            "echo (in: {" +
            "   raw: [{key: 2, value: 3}]" +
            "   unbounded: [{key: 2, value: 3}]" +
            "}) {" +
            "   raw {key, value}" +
            "   unbounded {key, value}" +
            "}}");
    assertNoErrors(result);
    assertValueAtPathEquals(2, result, "echo.raw.0.key");
    assertValueAtPathEquals(3, result, "echo.raw.0.value");
    assertValueAtPathEquals(2, result, "echo.unbounded.0.key");
    assertValueAtPathEquals(3, result, "echo.unbounded.0.value");
}
 

private void testTemporalMapping(Class type, GraphQLScalarType scalar) {
    GraphQLSchema schema = new GraphQLSchemaGenerator()
            .withOperationsFromSingleton(new ScalarService(), TypeFactory.parameterizedClass(ScalarService.class, type))
            .generate();
    GraphQLFieldDefinition query = schema.getQueryType().getFieldDefinition("identity");
    assertEquals(scalar, query.getType());
    assertEquals(scalar, query.getArgument("input").getType());
}
 

@Test
public void testSchemaDirectives() {
    GraphQLSchema schema = new TestSchemaGenerator()
            .withOperationsFromSingleton(new ServiceWithDirectives())
            .generate();

    GraphQLFieldDefinition scalarField = schema.getQueryType().getFieldDefinition("scalar");
    assertDirective(scalarField, "fieldDef", "fieldDef");

    GraphQLScalarType scalarResult = (GraphQLScalarType) scalarField.getType();
    assertDirective(scalarResult, "scalar", "scalar");

    graphql.schema.GraphQLArgument argument = scalarField.getArgument("in");
    assertDirective(argument, "argDef", "argument");

    GraphQLInputObjectType inputType = (GraphQLInputObjectType) argument.getType();
    assertDirective(inputType, "inputObjectType", "input");
    graphql.schema.GraphQLArgument directiveArg = DirectivesUtil.directiveWithArg(inputType.getDirectives(), "inputObjectType", "value").get();
    Optional<graphql.schema.GraphQLArgument> metaArg = DirectivesUtil.directiveWithArg(directiveArg.getDirectives(), "meta", "value");
    assertTrue(metaArg.isPresent());
    assertEquals("meta", metaArg.get().getValue());

    GraphQLInputObjectField inputField = inputType.getField("value");
    assertDirective(inputField, "inputFieldDef", "inputField");

    GraphQLFieldDefinition objField = schema.getQueryType().getFieldDefinition("obj");
    GraphQLObjectType objResult = (GraphQLObjectType) objField.getType();
    assertDirective(objResult, "objectType", "object");

    GraphQLFieldDefinition innerField = objResult.getFieldDefinition("value");
    assertDirective(innerField, "fieldDef", "field");
}
 

private Stream<GraphQLArgument> getArgument(Attribute attribute) {
    return getAttributeType(attribute)
            .filter(type -> type instanceof GraphQLInputType)
            .filter(type -> attribute.getPersistentAttributeType() != Attribute.PersistentAttributeType.EMBEDDED ||
                    (attribute.getPersistentAttributeType() == Attribute.PersistentAttributeType.EMBEDDED && type instanceof GraphQLScalarType))
            .map(type -> {
                String name = attribute.getName();                   

                return GraphQLArgument.newArgument()
                        .name(name)
                        .type((GraphQLInputType) type)
                        .build();
            });
}
 

public static GraphQLScalarType addressScalar() {
  return GraphQLScalarType.newScalar()
      .name("Address")
      .description("Address scalar")
      .coercing(ADDRESS_COERCING)
      .build();
}
 

public static Collection<GraphQLScalarType> transformFormatTypeResolvers()
{
  Set<GraphQLScalarType> scalars = new HashSet<>();
  for( IJsonFormatTypeCoercer formatCoercer: IJsonFormatTypeCoercer.get() )
  {
    formatCoercer.getFormats().forEach( (format, type) ->
      scalars.add( GraphQLScalarType.newScalar()
      .name( ManStringUtil.toPascalCase( format ) )
      .description( "Support values of type: " + type.getTypeName() )
      .coercing( makeCoercer( type, formatCoercer ) )
      .build() ) );
  }
  return scalars;
}
 

public static GraphQLScalarType bytesScalar() {
  return GraphQLScalarType.newScalar()
      .name("Bytes")
      .description("A Bytes scalar")
      .coercing(BYTES_COERCING)
      .build();
}
 

public static GraphQLScalarType bytes32Scalar() {
  return GraphQLScalarType.newScalar()
      .name("Bytes32")
      .description("A Bytes32 scalar")
      .coercing(BYTES32_COERCING)
      .build();
}
 

private static GraphQLScalarType scalar(String name, Coercing<?, ?> coercing) {
  return GraphQLScalarType
      .newScalar()
      .name(name)
      .description(name + " Scalar")
      .coercing(coercing)
      .build();
}
 

@Test
void testPrinterFilter() {
    TypeDefinitionRegistry typeDefinitionRegistry = new SchemaParser().parse(printerFilterSDL);
    RuntimeWiring runtimeWiring = RuntimeWiring.newRuntimeWiring()
            .type("Interface1", typeWiring -> typeWiring
                    .typeResolver(env -> null)
            )
            .type("Interface2", typeWiring -> typeWiring
                    .typeResolver(env -> null)
            )
            .scalar(GraphQLScalarType.newScalar()
                    .name("Scalar1")
                    .coercing(Scalars.GraphQLString.getCoercing())
                    .build()
            )
            .scalar(GraphQLScalarType.newScalar()
                    .name("Scalar2")
                    .coercing(Scalars.GraphQLString.getCoercing())
                    .build()
            )
            .build();
    GraphQLSchema graphQLSchema = new SchemaGenerator().makeExecutableSchema(
            typeDefinitionRegistry,
            runtimeWiring
    );
    Assertions.assertEquals(
            printerFilterExpectedSDL.trim(),
            new FederationSdlPrinter(FederationSdlPrinter.Options.defaultOptions()
                    .includeScalarTypes(true)
                    .includeDirectiveDefinitions(def ->
                            !def.getName().endsWith("1") && !standardDirectives.contains(def.getName())
                    )
                    .includeTypeDefinitions(def -> !def.getName().endsWith("1"))
            ).print(graphQLSchema).trim()
    );
}
 

public static GraphQLScalarType longScalar() {
  return GraphQLScalarType.newScalar()
      .name("Long")
      .description("A Long (UInt64) scalar")
      .coercing(LONG_COERCING)
      .build();
}
 

/**
 * Returns null if not a scalar/primitive type
 * Otherwise returns an instance of GraphQLScalarType from Scalars.
 * @param clazz
 * @return
 */
public static GraphQLScalarType getScalarType(Class<?> clazz) {
    if (String.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLString;
    }
    if (Long.class.isAssignableFrom(clazz) || long.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLLong;
    }
    if (Integer.class.isAssignableFrom(clazz) || int.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLInt;
    }
    if (Double.class.isAssignableFrom(clazz) || double.class.isAssignableFrom(clazz)
            || Float.class.isAssignableFrom(clazz) || float.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLFloat;
    }
    if (Boolean.class.isAssignableFrom(clazz) || boolean.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLBoolean;
    }
    if (BigInteger.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLBigInteger;
    }
    if (BigDecimal.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLBigDecimal;
    }
    if (Byte.class.isAssignableFrom(clazz) || byte.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLByte;
    }
    if (Character.class.isAssignableFrom(clazz) || char.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLChar;
    }
    if (Short.class.isAssignableFrom(clazz) || short.class.isAssignableFrom(clazz)) {
        return graphql.Scalars.GraphQLShort;
    }
    return null;
}
 

public FederationSdlPrinter(Options options) {
    this.options = options;
    printers.put(GraphQLSchema.class, schemaPrinter());
    printers.put(GraphQLObjectType.class, objectPrinter());
    printers.put(GraphQLEnumType.class, enumPrinter());
    printers.put(GraphQLScalarType.class, scalarPrinter());
    printers.put(GraphQLInterfaceType.class, interfacePrinter());
    printers.put(GraphQLUnionType.class, unionPrinter());
    printers.put(GraphQLInputObjectType.class, inputObjectPrinter());
}
 

private String getScalarTypeName() {
    GraphQLScalarType graphQLScalarType = GraphQLScalarTypes.getScalarMap().get(field.getReference().getClassName());
    if (graphQLScalarType != null) {
        return graphQLScalarType.getName();
    }
    return "Unknown Scalar Type [" + field.getReference().getClassName() + "]";
}