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graphql.schema.idl.SchemaGeneratorHelper Maven / Gradle / Ivy
package graphql.schema.idl;
import graphql.AssertException;
import graphql.Internal;
import graphql.introspection.Introspection.DirectiveLocation;
import graphql.language.Argument;
import graphql.language.Comment;
import graphql.language.Description;
import graphql.language.Directive;
import graphql.language.DirectiveDefinition;
import graphql.language.EnumTypeDefinition;
import graphql.language.EnumTypeExtensionDefinition;
import graphql.language.EnumValueDefinition;
import graphql.language.FieldDefinition;
import graphql.language.InputObjectTypeDefinition;
import graphql.language.InputObjectTypeExtensionDefinition;
import graphql.language.InputValueDefinition;
import graphql.language.InterfaceTypeDefinition;
import graphql.language.InterfaceTypeExtensionDefinition;
import graphql.language.Node;
import graphql.language.ObjectTypeDefinition;
import graphql.language.ObjectTypeExtensionDefinition;
import graphql.language.OperationTypeDefinition;
import graphql.language.ScalarTypeDefinition;
import graphql.language.ScalarTypeExtensionDefinition;
import graphql.language.StringValue;
import graphql.language.Type;
import graphql.language.TypeDefinition;
import graphql.language.TypeName;
import graphql.language.UnionTypeDefinition;
import graphql.language.UnionTypeExtensionDefinition;
import graphql.language.Value;
import graphql.schema.DataFetcher;
import graphql.schema.DataFetcherFactories;
import graphql.schema.DataFetcherFactory;
import graphql.schema.FieldCoordinates;
import graphql.schema.GraphQLAppliedDirective;
import graphql.schema.GraphQLArgument;
import graphql.schema.GraphQLCodeRegistry;
import graphql.schema.GraphQLDirective;
import graphql.schema.GraphQLDirectiveContainer;
import graphql.schema.GraphQLEnumType;
import graphql.schema.GraphQLEnumValueDefinition;
import graphql.schema.GraphQLFieldDefinition;
import graphql.schema.GraphQLInputObjectField;
import graphql.schema.GraphQLInputObjectType;
import graphql.schema.GraphQLInputType;
import graphql.schema.GraphQLInterfaceType;
import graphql.schema.GraphQLNamedInputType;
import graphql.schema.GraphQLNamedOutputType;
import graphql.schema.GraphQLObjectType;
import graphql.schema.GraphQLOutputType;
import graphql.schema.GraphQLScalarType;
import graphql.schema.GraphQLSchema;
import graphql.schema.GraphQLType;
import graphql.schema.GraphQLTypeReference;
import graphql.schema.GraphQLUnionType;
import graphql.schema.GraphqlDirectivesContainerTypeBuilder;
import graphql.schema.GraphqlTypeComparatorRegistry;
import graphql.schema.PropertyDataFetcher;
import graphql.schema.TypeResolver;
import graphql.schema.TypeResolverProxy;
import graphql.schema.idl.errors.NotAnInputTypeError;
import graphql.schema.idl.errors.NotAnOutputTypeError;
import graphql.util.FpKit;
import graphql.util.Pair;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Deque;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;
import static graphql.Assert.assertNotNull;
import static graphql.Directives.DEPRECATED_DIRECTIVE_DEFINITION;
import static graphql.Directives.SPECIFIED_BY_DIRECTIVE_DEFINITION;
import static graphql.Directives.SpecifiedByDirective;
import static graphql.introspection.Introspection.DirectiveLocation.ARGUMENT_DEFINITION;
import static graphql.introspection.Introspection.DirectiveLocation.ENUM;
import static graphql.introspection.Introspection.DirectiveLocation.ENUM_VALUE;
import static graphql.introspection.Introspection.DirectiveLocation.FIELD_DEFINITION;
import static graphql.introspection.Introspection.DirectiveLocation.INPUT_FIELD_DEFINITION;
import static graphql.introspection.Introspection.DirectiveLocation.INPUT_OBJECT;
import static graphql.introspection.Introspection.DirectiveLocation.OBJECT;
import static graphql.introspection.Introspection.DirectiveLocation.SCALAR;
import static graphql.introspection.Introspection.DirectiveLocation.UNION;
import static graphql.schema.GraphQLEnumValueDefinition.newEnumValueDefinition;
import static graphql.schema.GraphQLTypeReference.typeRef;
import static graphql.schema.idl.SchemaGeneratorAppliedDirectiveHelper.buildAppliedDirectives;
import static graphql.schema.idl.SchemaGeneratorAppliedDirectiveHelper.buildDirectiveDefinitionFromAst;
import static java.lang.String.format;
import static java.util.Collections.emptyList;
import static java.util.stream.Collectors.toMap;
@Internal
public class SchemaGeneratorHelper {
/**
* We pass this around so we know what we have defined in a stack like manner plus
* it gives us helper functions
*/
static class BuildContext {
private final TypeDefinitionRegistry typeRegistry;
private final RuntimeWiring wiring;
private final Deque typeStack = new ArrayDeque<>();
private final Map outputGTypes = new LinkedHashMap<>();
private final Map inputGTypes = new LinkedHashMap<>();
private final Set directives = new LinkedHashSet<>();
private final GraphQLCodeRegistry.Builder codeRegistry;
public final Map operationTypeDefs;
public final SchemaGenerator.Options options;
public boolean directiveWiringRequired;
BuildContext(TypeDefinitionRegistry typeRegistry, RuntimeWiring wiring, Map operationTypeDefinitions, SchemaGenerator.Options options) {
this.typeRegistry = typeRegistry;
this.wiring = wiring;
this.codeRegistry = GraphQLCodeRegistry.newCodeRegistry(wiring.getCodeRegistry());
this.operationTypeDefs = operationTypeDefinitions;
this.options = options;
directiveWiringRequired = false;
}
public boolean isDirectiveWiringRequired() {
return directiveWiringRequired;
}
public TypeDefinitionRegistry getTypeRegistry() {
return typeRegistry;
}
TypeDefinition getTypeDefinition(Type type) {
Optional optionalTypeDefinition = typeRegistry.getType(type);
return optionalTypeDefinition.orElseThrow(
() -> new AssertException(format(" type definition for type '%s' not found", type))
);
}
boolean stackContains(TypeInfo typeInfo) {
return typeStack.contains(typeInfo.getName());
}
void push(TypeInfo typeInfo) {
typeStack.push(typeInfo.getName());
}
void pop() {
typeStack.pop();
}
GraphQLOutputType hasOutputType(TypeDefinition typeDefinition) {
return outputGTypes.get(typeDefinition.getName());
}
GraphQLInputType hasInputType(TypeDefinition typeDefinition) {
return inputGTypes.get(typeDefinition.getName());
}
void putOutputType(GraphQLNamedOutputType outputType) {
outputGTypes.put(outputType.getName(), outputType);
// certain types can be both input and output types, for example enums and scalars
if (outputType instanceof GraphQLInputType) {
inputGTypes.put(outputType.getName(), (GraphQLInputType) outputType);
}
}
void putInputType(GraphQLNamedInputType inputType) {
inputGTypes.put(inputType.getName(), inputType);
// certain types can be both input and output types, for example enums and scalars
if (inputType instanceof GraphQLOutputType) {
outputGTypes.put(inputType.getName(), (GraphQLOutputType) inputType);
}
}
RuntimeWiring getWiring() {
return wiring;
}
GraphqlTypeComparatorRegistry getComparatorRegistry() {
return wiring.getComparatorRegistry();
}
public GraphQLCodeRegistry.Builder getCodeRegistry() {
return codeRegistry;
}
public void addDirectiveDefinition(GraphQLDirective directive) {
this.directives.add(directive);
}
public void addDirectives(Set directives) {
this.directives.addAll(directives);
}
public Set getDirectives() {
return directives;
}
public boolean isCaptureAstDefinitions() {
return options.isCaptureAstDefinitions();
}
}
static final String NO_LONGER_SUPPORTED = "No longer supported";
static String buildDescription(BuildContext buildContext, Node node, Description description) {
if (description != null) {
return description.getContent();
}
if (!buildContext.options.isUseCommentsAsDescription()) {
return null;
}
List comments = node.getComments();
List lines = new ArrayList<>();
for (Comment comment : comments) {
String commentLine = comment.getContent();
if (commentLine.trim().isEmpty()) {
lines.clear();
} else {
lines.add(commentLine);
}
}
if (lines.size() == 0) {
return null;
}
return String.join("\n", lines);
}
String buildDeprecationReason(List directives) {
directives = Optional.ofNullable(directives).orElse(emptyList());
Optional directive = directives.stream().filter(d -> "deprecated".equals(d.getName())).findFirst();
if (directive.isPresent()) {
Map args = directive.get().getArguments().stream().collect(toMap(
Argument::getName, arg -> ((StringValue) arg.getValue()).getValue()
));
if (args.isEmpty()) {
return NO_LONGER_SUPPORTED; // default value from spec
} else {
// pre flight checks have ensured its valid
return args.get("reason");
}
}
return null;
}
public Function, GraphQLInputType> inputTypeFactory(BuildContext buildCtx) {
return rawType -> buildInputType(buildCtx, rawType);
}
GraphQLInputType buildInputType(BuildContext buildCtx, Type rawType) {
TypeDefinition typeDefinition = buildCtx.getTypeDefinition(rawType);
TypeInfo typeInfo = TypeInfo.typeInfo(rawType);
GraphQLInputType inputType = buildCtx.hasInputType(typeDefinition);
if (inputType != null) {
return typeInfo.decorate(inputType);
}
if (buildCtx.stackContains(typeInfo)) {
// we have circled around so put in a type reference and fix it later
return typeInfo.decorate(typeRef(typeInfo.getName()));
}
buildCtx.push(typeInfo);
if (typeDefinition instanceof InputObjectTypeDefinition) {
inputType = buildInputObjectType(buildCtx, (InputObjectTypeDefinition) typeDefinition);
} else if (typeDefinition instanceof EnumTypeDefinition) {
inputType = buildEnumType(buildCtx, (EnumTypeDefinition) typeDefinition);
} else if (typeDefinition instanceof ScalarTypeDefinition) {
inputType = buildScalar(buildCtx, (ScalarTypeDefinition) typeDefinition);
} else {
// typeDefinition is not a valid InputType
throw new NotAnInputTypeError(rawType, typeDefinition);
}
buildCtx.putInputType((GraphQLNamedInputType) inputType);
buildCtx.pop();
return typeInfo.decorate(inputType);
}
GraphQLInputObjectType buildInputObjectType(BuildContext buildCtx, InputObjectTypeDefinition typeDefinition) {
GraphQLInputObjectType.Builder builder = GraphQLInputObjectType.newInputObject();
builder.definition(buildCtx.isCaptureAstDefinitions() ? typeDefinition : null);
builder.name(typeDefinition.getName());
builder.description(buildDescription(buildCtx, typeDefinition, typeDefinition.getDescription()));
builder.comparatorRegistry(buildCtx.getComparatorRegistry());
List extensions = inputObjectTypeExtensions(typeDefinition, buildCtx);
builder.extensionDefinitions(buildCtx.isCaptureAstDefinitions() ? extensions : emptyList());
Pair, List> appliedDirectives = buildAppliedDirectives(buildCtx,
inputTypeFactory(buildCtx),
typeDefinition.getDirectives(),
directivesOf(extensions),
INPUT_OBJECT,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
typeDefinition.getInputValueDefinitions().forEach(inputValue ->
builder.field(buildInputField(buildCtx, inputValue)));
extensions.forEach(extension -> extension.getInputValueDefinitions().forEach(inputValueDefinition -> {
GraphQLInputObjectField inputField = buildInputField(buildCtx, inputValueDefinition);
if (!builder.hasField(inputField.getName())) {
builder.field(inputField);
}
}));
return directivesObserve(buildCtx, builder.build());
}
private GraphQLInputObjectField buildInputField(BuildContext buildCtx, InputValueDefinition fieldDef) {
GraphQLInputObjectField.Builder fieldBuilder = GraphQLInputObjectField.newInputObjectField();
fieldBuilder.definition(buildCtx.isCaptureAstDefinitions() ? fieldDef : null);
fieldBuilder.name(fieldDef.getName());
fieldBuilder.description(buildDescription(buildCtx, fieldDef, fieldDef.getDescription()));
fieldBuilder.deprecate(buildDeprecationReason(fieldDef.getDirectives()));
fieldBuilder.comparatorRegistry(buildCtx.getComparatorRegistry());
// currently the spec doesnt allow deprecations on InputValueDefinitions but it should!
//fieldBuilder.deprecate(buildDeprecationReason(fieldDef.getDirectives()));
GraphQLInputType inputType = buildInputType(buildCtx, fieldDef.getType());
fieldBuilder.type(inputType);
Value defaultValue = fieldDef.getDefaultValue();
if (defaultValue != null) {
fieldBuilder.defaultValueLiteral(defaultValue);
}
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
fieldDef.getDirectives(),
emptyList(),
INPUT_FIELD_DEFINITION,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, fieldBuilder, appliedDirectives);
return directivesObserve(buildCtx, fieldBuilder.build());
}
GraphQLEnumType buildEnumType(BuildContext buildCtx, EnumTypeDefinition typeDefinition) {
GraphQLEnumType.Builder builder = GraphQLEnumType.newEnum();
builder.definition(buildCtx.isCaptureAstDefinitions() ? typeDefinition : null);
builder.name(typeDefinition.getName());
builder.description(buildDescription(buildCtx, typeDefinition, typeDefinition.getDescription()));
builder.comparatorRegistry(buildCtx.getComparatorRegistry());
List extensions = enumTypeExtensions(typeDefinition, buildCtx);
builder.extensionDefinitions(buildCtx.isCaptureAstDefinitions() ? extensions : emptyList());
EnumValuesProvider enumValuesProvider = buildCtx.getWiring().getEnumValuesProviders().get(typeDefinition.getName());
typeDefinition.getEnumValueDefinitions().forEach(evd -> {
GraphQLEnumValueDefinition enumValueDefinition = buildEnumValue(buildCtx, typeDefinition, enumValuesProvider, evd);
builder.value(enumValueDefinition);
});
extensions.forEach(extension -> extension.getEnumValueDefinitions().forEach(evd -> {
GraphQLEnumValueDefinition enumValueDefinition = buildEnumValue(buildCtx, typeDefinition, enumValuesProvider, evd);
if (!builder.hasValue(enumValueDefinition.getName())) {
builder.value(enumValueDefinition);
}
}));
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
typeDefinition.getDirectives(),
directivesOf(extensions),
ENUM,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
return directivesObserve(buildCtx, builder.build());
}
private GraphQLEnumValueDefinition buildEnumValue(BuildContext buildCtx,
EnumTypeDefinition typeDefinition,
EnumValuesProvider enumValuesProvider,
EnumValueDefinition evd) {
String description = buildDescription(buildCtx, evd, evd.getDescription());
String deprecation = buildDeprecationReason(evd.getDirectives());
Object value;
if (enumValuesProvider != null) {
value = enumValuesProvider.getValue(evd.getName());
assertNotNull(value,
() -> format("EnumValuesProvider for %s returned null for %s", typeDefinition.getName(), evd.getName()));
} else {
value = evd.getName();
}
GraphQLEnumValueDefinition.Builder builder = newEnumValueDefinition()
.name(evd.getName())
.value(value)
.description(description)
.deprecationReason(deprecation)
.definition(buildCtx.isCaptureAstDefinitions() ? evd : null)
.comparatorRegistry(buildCtx.getComparatorRegistry());
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
evd.getDirectives(),
emptyList(),
ENUM_VALUE,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
GraphQLEnumValueDefinition enumValueDefinition = builder.build();
return directivesObserve(buildCtx, enumValueDefinition);
}
GraphQLScalarType buildScalar(BuildContext buildCtx, ScalarTypeDefinition typeDefinition) {
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
RuntimeWiring runtimeWiring = buildCtx.getWiring();
WiringFactory wiringFactory = runtimeWiring.getWiringFactory();
List extensions = scalarTypeExtensions(typeDefinition, buildCtx);
ScalarWiringEnvironment environment = new ScalarWiringEnvironment(typeRegistry, typeDefinition, extensions);
GraphQLScalarType scalar;
if (wiringFactory.providesScalar(environment)) {
scalar = wiringFactory.getScalar(environment);
} else {
scalar = buildCtx.getWiring().getScalars().get(typeDefinition.getName());
}
if (!ScalarInfo.isGraphqlSpecifiedScalar(scalar)) {
String description = getScalarDesc(scalar, typeDefinition);
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
typeDefinition.getDirectives(),
directivesOf(extensions),
SCALAR,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
scalar = scalar.transform(builder -> {
builder
.description(description)
.definition(buildCtx.isCaptureAstDefinitions() ? typeDefinition : null)
.comparatorRegistry(buildCtx.getComparatorRegistry())
.specifiedByUrl(getSpecifiedByUrl(typeDefinition, extensions));
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
});
}
return directivesObserve(buildCtx, scalar);
}
private String getScalarDesc(GraphQLScalarType scalar, ScalarTypeDefinition typeDefinition) {
if (scalar.getDescription() != null) {
if (!scalar.getDescription().trim().isEmpty()) {
return scalar.getDescription();
}
}
if (typeDefinition.getDescription() != null) {
return typeDefinition.getDescription().getContent();
}
return "";
}
String getSpecifiedByUrl(ScalarTypeDefinition scalarTypeDefinition, List extensions) {
List allDirectives = new ArrayList<>(scalarTypeDefinition.getDirectives());
extensions.forEach(extension -> allDirectives.addAll(extension.getDirectives()));
Optional specifiedByDirective = FpKit.findOne(allDirectives,
directiveDefinition -> directiveDefinition.getName().equals(SpecifiedByDirective.getName()));
if (!specifiedByDirective.isPresent()) {
return null;
}
Argument urlArgument = specifiedByDirective.get().getArgument("url");
StringValue url = (StringValue) urlArgument.getValue();
return url.getValue();
}
private TypeResolver getTypeResolverForInterface(BuildContext buildCtx, InterfaceTypeDefinition interfaceType) {
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
RuntimeWiring wiring = buildCtx.getWiring();
WiringFactory wiringFactory = wiring.getWiringFactory();
TypeResolver typeResolver;
InterfaceWiringEnvironment environment = new InterfaceWiringEnvironment(typeRegistry, interfaceType);
if (wiringFactory.providesTypeResolver(environment)) {
typeResolver = wiringFactory.getTypeResolver(environment);
assertNotNull(typeResolver, () -> "The WiringFactory indicated it provides a interface type resolver but then returned null");
} else {
typeResolver = wiring.getTypeResolvers().get(interfaceType.getName());
if (typeResolver == null) {
// this really should be checked earlier via a pre-flight check
typeResolver = new TypeResolverProxy();
}
}
return typeResolver;
}
private TypeResolver getTypeResolverForUnion(BuildContext buildCtx, UnionTypeDefinition unionType) {
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
RuntimeWiring wiring = buildCtx.getWiring();
WiringFactory wiringFactory = wiring.getWiringFactory();
TypeResolver typeResolver;
UnionWiringEnvironment environment = new UnionWiringEnvironment(typeRegistry, unionType);
if (wiringFactory.providesTypeResolver(environment)) {
typeResolver = wiringFactory.getTypeResolver(environment);
assertNotNull(typeResolver, () -> "The WiringFactory indicated it union provides a type resolver but then returned null");
} else {
typeResolver = wiring.getTypeResolvers().get(unionType.getName());
if (typeResolver == null) {
// this really should be checked earlier via a pre-flight check
typeResolver = new TypeResolverProxy();
}
}
return typeResolver;
}
private void buildInterfaceTypeInterfaces(BuildContext buildCtx,
InterfaceTypeDefinition typeDefinition,
GraphQLInterfaceType.Builder builder,
List extensions) {
Map interfaces = new LinkedHashMap<>();
typeDefinition.getImplements().forEach(type -> {
GraphQLNamedOutputType newInterfaceType = buildOutputType(buildCtx, type);
interfaces.put(newInterfaceType.getName(), newInterfaceType);
});
extensions.forEach(extension -> extension.getImplements().forEach(type -> {
GraphQLInterfaceType interfaceType = buildOutputType(buildCtx, type);
if (!interfaces.containsKey(interfaceType.getName())) {
interfaces.put(interfaceType.getName(), interfaceType);
}
}));
interfaces.values().forEach(interfaze -> {
if (interfaze instanceof GraphQLInterfaceType) {
builder.withInterface((GraphQLInterfaceType) interfaze);
return;
}
if (interfaze instanceof GraphQLTypeReference) {
builder.withInterface((GraphQLTypeReference) interfaze);
}
});
}
private GraphQLObjectType buildOperation(BuildContext buildCtx, OperationTypeDefinition operation) {
return buildOutputType(buildCtx, operation.getTypeName());
}
GraphQLInterfaceType buildInterfaceType(BuildContext buildCtx, InterfaceTypeDefinition typeDefinition) {
GraphQLInterfaceType.Builder builder = GraphQLInterfaceType.newInterface();
builder.definition(buildCtx.isCaptureAstDefinitions() ? typeDefinition : null);
builder.name(typeDefinition.getName());
builder.description(buildDescription(buildCtx, typeDefinition, typeDefinition.getDescription()));
builder.comparatorRegistry(buildCtx.getComparatorRegistry());
List extensions = interfaceTypeExtensions(typeDefinition, buildCtx);
builder.extensionDefinitions(buildCtx.isCaptureAstDefinitions() ? extensions : emptyList());
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
typeDefinition.getDirectives(),
directivesOf(extensions),
OBJECT,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
typeDefinition.getFieldDefinitions().forEach(fieldDef -> {
GraphQLFieldDefinition fieldDefinition = buildField(buildCtx, typeDefinition, fieldDef);
builder.field(fieldDefinition);
});
extensions.forEach(extension -> extension.getFieldDefinitions().forEach(fieldDef -> {
GraphQLFieldDefinition fieldDefinition = buildField(buildCtx, typeDefinition, fieldDef);
if (!builder.hasField(fieldDefinition.getName())) {
builder.field(fieldDefinition);
}
}));
buildInterfaceTypeInterfaces(buildCtx, typeDefinition, builder, extensions);
GraphQLInterfaceType interfaceType = builder.build();
if (!buildCtx.getCodeRegistry().hasTypeResolver(interfaceType.getName())) {
TypeResolver typeResolver = getTypeResolverForInterface(buildCtx, typeDefinition);
buildCtx.getCodeRegistry().typeResolver(interfaceType, typeResolver);
}
return directivesObserve(buildCtx, interfaceType);
}
GraphQLObjectType buildObjectType(BuildContext buildCtx, ObjectTypeDefinition typeDefinition) {
GraphQLObjectType.Builder builder = GraphQLObjectType.newObject();
builder.definition(buildCtx.isCaptureAstDefinitions() ? typeDefinition : null);
builder.name(typeDefinition.getName());
builder.description(buildDescription(buildCtx, typeDefinition, typeDefinition.getDescription()));
builder.comparatorRegistry(buildCtx.getComparatorRegistry());
List extensions = objectTypeExtensions(typeDefinition, buildCtx);
builder.extensionDefinitions(buildCtx.isCaptureAstDefinitions() ? extensions : emptyList());
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
typeDefinition.getDirectives(),
directivesOf(extensions),
OBJECT,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
typeDefinition.getFieldDefinitions().forEach(fieldDef -> {
GraphQLFieldDefinition fieldDefinition = buildField(buildCtx, typeDefinition, fieldDef);
builder.field(fieldDefinition);
});
extensions.forEach(extension -> extension.getFieldDefinitions().forEach(fieldDef -> {
GraphQLFieldDefinition fieldDefinition = buildField(buildCtx, typeDefinition, fieldDef);
if (!builder.hasField(fieldDefinition.getName())) {
builder.field(fieldDefinition);
}
}));
buildObjectTypeInterfaces(buildCtx, typeDefinition, builder, extensions);
return directivesObserve(buildCtx, builder.build());
}
private void buildObjectTypeInterfaces(BuildContext buildCtx,
ObjectTypeDefinition typeDefinition,
GraphQLObjectType.Builder builder,
List extensions) {
Map interfaces = new LinkedHashMap<>();
typeDefinition.getImplements().forEach(type -> {
GraphQLNamedOutputType newInterfaceType = buildOutputType(buildCtx, type);
interfaces.put(newInterfaceType.getName(), newInterfaceType);
});
extensions.forEach(extension -> extension.getImplements().forEach(type -> {
GraphQLInterfaceType interfaceType = buildOutputType(buildCtx, type);
if (!interfaces.containsKey(interfaceType.getName())) {
interfaces.put(interfaceType.getName(), interfaceType);
}
}));
interfaces.values().forEach(interfaze -> {
if (interfaze instanceof GraphQLInterfaceType) {
builder.withInterface((GraphQLInterfaceType) interfaze);
return;
}
if (interfaze instanceof GraphQLTypeReference) {
builder.withInterface((GraphQLTypeReference) interfaze);
}
});
}
GraphQLUnionType buildUnionType(BuildContext buildCtx, UnionTypeDefinition typeDefinition) {
GraphQLUnionType.Builder builder = GraphQLUnionType.newUnionType();
builder.definition(buildCtx.isCaptureAstDefinitions() ? typeDefinition : null);
builder.name(typeDefinition.getName());
builder.description(buildDescription(buildCtx, typeDefinition, typeDefinition.getDescription()));
builder.comparatorRegistry(buildCtx.getComparatorRegistry());
List extensions = unionTypeExtensions(typeDefinition, buildCtx);
builder.extensionDefinitions(buildCtx.isCaptureAstDefinitions() ? extensions : emptyList());
typeDefinition.getMemberTypes().forEach(mt -> {
GraphQLOutputType outputType = buildOutputType(buildCtx, mt);
if (outputType instanceof GraphQLTypeReference) {
builder.possibleType((GraphQLTypeReference) outputType);
} else {
builder.possibleType((GraphQLObjectType) outputType);
}
});
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
typeDefinition.getDirectives(),
directivesOf(extensions),
UNION,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
extensions.forEach(extension -> extension.getMemberTypes().forEach(mt -> {
GraphQLNamedOutputType outputType = buildOutputType(buildCtx, mt);
if (!builder.containType(outputType.getName())) {
if (outputType instanceof GraphQLTypeReference) {
builder.possibleType((GraphQLTypeReference) outputType);
} else {
builder.possibleType((GraphQLObjectType) outputType);
}
}
}
));
GraphQLUnionType unionType = builder.build();
if (!buildCtx.getCodeRegistry().hasTypeResolver(unionType.getName())) {
TypeResolver typeResolver = getTypeResolverForUnion(buildCtx, typeDefinition);
buildCtx.getCodeRegistry().typeResolver(unionType, typeResolver);
}
return directivesObserve(buildCtx, unionType);
}
/**
* This is the main recursive spot that builds out the various forms of Output types
*
* @param buildCtx the context we need to work out what we are doing
* @param rawType the type to be built
*
* @return an output type
*/
@SuppressWarnings({"TypeParameterUnusedInFormals"})
private T buildOutputType(BuildContext buildCtx, Type rawType) {
TypeDefinition typeDefinition = buildCtx.getTypeDefinition(rawType);
TypeInfo typeInfo = TypeInfo.typeInfo(rawType);
GraphQLOutputType outputType = buildCtx.hasOutputType(typeDefinition);
if (outputType != null) {
return typeInfo.decorate(outputType);
}
if (buildCtx.stackContains(typeInfo)) {
// we have circled around so put in a type reference and fix it up later
// otherwise we will go into an infinite loop
return typeInfo.decorate(typeRef(typeInfo.getName()));
}
buildCtx.push(typeInfo);
if (typeDefinition instanceof ObjectTypeDefinition) {
outputType = buildObjectType(buildCtx, (ObjectTypeDefinition) typeDefinition);
} else if (typeDefinition instanceof InterfaceTypeDefinition) {
outputType = buildInterfaceType(buildCtx, (InterfaceTypeDefinition) typeDefinition);
} else if (typeDefinition instanceof UnionTypeDefinition) {
outputType = buildUnionType(buildCtx, (UnionTypeDefinition) typeDefinition);
} else if (typeDefinition instanceof EnumTypeDefinition) {
outputType = buildEnumType(buildCtx, (EnumTypeDefinition) typeDefinition);
} else if (typeDefinition instanceof ScalarTypeDefinition) {
outputType = buildScalar(buildCtx, (ScalarTypeDefinition) typeDefinition);
} else {
// typeDefinition is not a valid output type
throw new NotAnOutputTypeError(rawType, typeDefinition);
}
buildCtx.putOutputType((GraphQLNamedOutputType) outputType);
buildCtx.pop();
return typeInfo.decorate(outputType);
}
GraphQLFieldDefinition buildField(BuildContext buildCtx, TypeDefinition parentType, FieldDefinition fieldDef) {
GraphQLFieldDefinition.Builder builder = GraphQLFieldDefinition.newFieldDefinition();
builder.definition(buildCtx.isCaptureAstDefinitions() ? fieldDef : null);
builder.name(fieldDef.getName());
builder.description(buildDescription(buildCtx, fieldDef, fieldDef.getDescription()));
builder.deprecate(buildDeprecationReason(fieldDef.getDirectives()));
builder.comparatorRegistry(buildCtx.getComparatorRegistry());
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
fieldDef.getDirectives(),
emptyList(), FIELD_DEFINITION,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
fieldDef.getInputValueDefinitions().forEach(inputValueDefinition ->
builder.argument(buildArgument(buildCtx, inputValueDefinition)));
GraphQLOutputType fieldType = buildOutputType(buildCtx, fieldDef.getType());
builder.type(fieldType);
GraphQLFieldDefinition fieldDefinition = builder.build();
// if they have already wired in a fetcher - then leave it alone
FieldCoordinates coordinates = FieldCoordinates.coordinates(parentType.getName(), fieldDefinition.getName());
if (!buildCtx.getCodeRegistry().hasDataFetcher(coordinates)) {
DataFetcherFactory dataFetcherFactory = buildDataFetcherFactory(buildCtx,
parentType,
fieldDef,
fieldType,
appliedDirectives.first,
appliedDirectives.second);
buildCtx.getCodeRegistry().dataFetcher(coordinates, dataFetcherFactory);
}
return directivesObserve(buildCtx, fieldDefinition);
}
private DataFetcherFactory buildDataFetcherFactory(BuildContext buildCtx,
TypeDefinition parentType,
FieldDefinition fieldDef,
GraphQLOutputType fieldType,
List directives,
List appliedDirectives) {
String fieldName = fieldDef.getName();
String parentTypeName = parentType.getName();
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
RuntimeWiring runtimeWiring = buildCtx.getWiring();
WiringFactory wiringFactory = runtimeWiring.getWiringFactory();
GraphQLCodeRegistry.Builder codeRegistry = buildCtx.getCodeRegistry();
FieldWiringEnvironment wiringEnvironment = new FieldWiringEnvironment(typeRegistry, parentType, fieldDef, fieldType, directives, appliedDirectives);
DataFetcherFactory dataFetcherFactory;
if (wiringFactory.providesDataFetcherFactory(wiringEnvironment)) {
dataFetcherFactory = wiringFactory.getDataFetcherFactory(wiringEnvironment);
assertNotNull(dataFetcherFactory, () -> "The WiringFactory indicated it provides a data fetcher factory but then returned null");
} else {
//
// ok they provide a data fetcher directly
DataFetcher dataFetcher;
if (wiringFactory.providesDataFetcher(wiringEnvironment)) {
dataFetcher = wiringFactory.getDataFetcher(wiringEnvironment);
assertNotNull(dataFetcher, () -> "The WiringFactory indicated it provides a data fetcher but then returned null");
} else {
dataFetcher = runtimeWiring.getDataFetcherForType(parentTypeName).get(fieldName);
if (dataFetcher == null) {
dataFetcher = runtimeWiring.getDefaultDataFetcherForType(parentTypeName);
if (dataFetcher == null) {
dataFetcher = wiringFactory.getDefaultDataFetcher(wiringEnvironment);
if (dataFetcher == null) {
DataFetcherFactory codeRegistryDFF = codeRegistry.getDefaultDataFetcherFactory();
if (codeRegistryDFF != null) {
return codeRegistryDFF;
}
dataFetcher = dataFetcherOfLastResort(wiringEnvironment);
}
}
}
}
dataFetcherFactory = DataFetcherFactories.useDataFetcher(dataFetcher);
}
return dataFetcherFactory;
}
GraphQLArgument buildArgument(BuildContext buildCtx, InputValueDefinition valueDefinition) {
GraphQLArgument.Builder builder = GraphQLArgument.newArgument();
builder.definition(buildCtx.isCaptureAstDefinitions() ? valueDefinition : null);
builder.name(valueDefinition.getName());
builder.description(buildDescription(buildCtx, valueDefinition, valueDefinition.getDescription()));
builder.deprecate(buildDeprecationReason(valueDefinition.getDirectives()));
builder.comparatorRegistry(buildCtx.getComparatorRegistry());
GraphQLInputType inputType = buildInputType(buildCtx, valueDefinition.getType());
builder.type(inputType);
Value defaultValue = valueDefinition.getDefaultValue();
if (defaultValue != null) {
builder.defaultValueLiteral(defaultValue);
}
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
valueDefinition.getDirectives(),
emptyList(),
ARGUMENT_DEFINITION,
buildCtx.getDirectives(),
buildCtx.getComparatorRegistry());
buildAppliedDirectives(buildCtx, builder, appliedDirectives);
return directivesObserve(buildCtx, builder.build());
}
void buildOperations(BuildContext buildCtx, GraphQLSchema.Builder schemaBuilder) {
//
// Schema can be missing if the type is called 'Query'. Pre flight checks have checked that!
//
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
Map operationTypeDefs = buildCtx.operationTypeDefs;
GraphQLObjectType query;
GraphQLObjectType mutation;
GraphQLObjectType subscription;
Optional queryOperation = getOperationNamed("query", operationTypeDefs);
if (!queryOperation.isPresent()) {
@SuppressWarnings({"OptionalGetWithoutIsPresent"})
TypeDefinition queryTypeDef = typeRegistry.getType("Query").get();
query = buildOutputType(buildCtx, TypeName.newTypeName().name(queryTypeDef.getName()).build());
} else {
query = buildOperation(buildCtx, queryOperation.get());
}
schemaBuilder.query(query);
Optional mutationOperation = getOperationNamed("mutation", operationTypeDefs);
if (!mutationOperation.isPresent()) {
Optional mutationTypeDef = typeRegistry.getType("Mutation");
if (mutationTypeDef.isPresent()) {
mutation = buildOutputType(buildCtx, TypeName.newTypeName().name(mutationTypeDef.get().getName()).build());
schemaBuilder.mutation(mutation);
}
} else {
mutation = buildOperation(buildCtx, mutationOperation.get());
schemaBuilder.mutation(mutation);
}
Optional subscriptionOperation = getOperationNamed("subscription", operationTypeDefs);
if (!subscriptionOperation.isPresent()) {
Optional subscriptionTypeDef = typeRegistry.getType("Subscription");
if (subscriptionTypeDef.isPresent()) {
subscription = buildOutputType(buildCtx, TypeName.newTypeName().name(subscriptionTypeDef.get().getName()).build());
schemaBuilder.subscription(subscription);
}
} else {
subscription = buildOperation(buildCtx, subscriptionOperation.get());
schemaBuilder.subscription(subscription);
}
}
void buildSchemaDirectivesAndExtensions(BuildContext buildCtx, GraphQLSchema.Builder schemaBuilder) {
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
List schemaDirectiveList = SchemaExtensionsChecker.gatherSchemaDirectives(typeRegistry);
Set runtimeDirectives = buildCtx.getDirectives();
Pair, List> appliedDirectives = buildAppliedDirectives(
buildCtx,
inputTypeFactory(buildCtx),
schemaDirectiveList,
emptyList(),
DirectiveLocation.SCHEMA,
runtimeDirectives,
buildCtx.getComparatorRegistry());
schemaBuilder.withSchemaDirectives(appliedDirectives.first);
schemaBuilder.withSchemaAppliedDirectives(appliedDirectives.second);
schemaBuilder.definition(buildCtx.isCaptureAstDefinitions() ? typeRegistry.schemaDefinition().orElse(null) : null);
schemaBuilder.extensionDefinitions(buildCtx.isCaptureAstDefinitions() ? typeRegistry.getSchemaExtensionDefinitions() : emptyList());
}
List inputObjectTypeExtensions(InputObjectTypeDefinition typeDefinition, BuildContext buildCtx) {
return buildCtx.getTypeRegistry().inputObjectTypeExtensions().getOrDefault(typeDefinition.getName(), emptyList());
}
List enumTypeExtensions(EnumTypeDefinition typeDefinition, BuildContext buildCtx) {
return buildCtx.getTypeRegistry().enumTypeExtensions().getOrDefault(typeDefinition.getName(), emptyList());
}
List scalarTypeExtensions(ScalarTypeDefinition typeDefinition, BuildContext buildCtx) {
return buildCtx.getTypeRegistry().scalarTypeExtensions().getOrDefault(typeDefinition.getName(), emptyList());
}
List interfaceTypeExtensions(InterfaceTypeDefinition typeDefinition, BuildContext buildCtx) {
return buildCtx.getTypeRegistry().interfaceTypeExtensions().getOrDefault(typeDefinition.getName(), emptyList());
}
List objectTypeExtensions(ObjectTypeDefinition typeDefinition, BuildContext buildCtx) {
return buildCtx.getTypeRegistry().objectTypeExtensions().getOrDefault(typeDefinition.getName(), emptyList());
}
List unionTypeExtensions(UnionTypeDefinition typeDefinition, BuildContext buildCtx) {
return buildCtx.getTypeRegistry().unionTypeExtensions().getOrDefault(typeDefinition.getName(), emptyList());
}
/**
* We build the query / mutation / subscription path as a tree of referenced types
* but then we build the rest of the types specified and put them in as additional types
*
* @param buildCtx the context we need to work out what we are doing
*
* @return the additional types not referenced from the top level operations
*/
Set buildAdditionalTypes(BuildContext buildCtx) {
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
Set detachedTypeNames = getDetachedTypeNames(buildCtx);
Set additionalTypes = new LinkedHashSet<>();
// recursively record detached types on the ctx and add them to the additionalTypes set
typeRegistry.types().values().stream()
.filter(typeDefinition -> detachedTypeNames.contains(typeDefinition.getName()))
.forEach(typeDefinition -> {
TypeName typeName = TypeName.newTypeName().name(typeDefinition.getName()).build();
if (typeDefinition instanceof InputObjectTypeDefinition) {
if (buildCtx.hasInputType(typeDefinition) == null) {
buildCtx.putInputType((GraphQLNamedInputType) buildInputType(buildCtx, typeName));
}
additionalTypes.add(buildCtx.inputGTypes.get(typeDefinition.getName()));
} else {
if (buildCtx.hasOutputType(typeDefinition) == null) {
buildCtx.putOutputType(buildOutputType(buildCtx, typeName));
}
additionalTypes.add(buildCtx.outputGTypes.get(typeDefinition.getName()));
}
});
typeRegistry.scalars().values().stream()
.filter(typeDefinition -> detachedTypeNames.contains(typeDefinition.getName()))
.forEach(scalarTypeDefinition -> {
if (ScalarInfo.isGraphqlSpecifiedScalar(scalarTypeDefinition.getName())) {
return;
}
if (buildCtx.hasInputType(scalarTypeDefinition) == null && buildCtx.hasOutputType(scalarTypeDefinition) == null) {
buildCtx.putOutputType(buildScalar(buildCtx, scalarTypeDefinition));
}
if (buildCtx.hasInputType(scalarTypeDefinition) != null) {
additionalTypes.add(buildCtx.inputGTypes.get(scalarTypeDefinition.getName()));
} else if (buildCtx.hasOutputType(scalarTypeDefinition) != null) {
additionalTypes.add(buildCtx.outputGTypes.get(scalarTypeDefinition.getName()));
}
});
return additionalTypes;
}
/**
* Detached types (or additional types) are all types that
* are not connected to the root operations types.
*
* @param buildCtx buildCtx
*
* @return detached type names
*/
private Set getDetachedTypeNames(BuildContext buildCtx) {
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
// connected types are all types that have a path that connects them back to the root operation types.
Set connectedTypes = new HashSet<>(buildCtx.inputGTypes.keySet());
connectedTypes.addAll(buildCtx.outputGTypes.keySet());
Set allTypeNames = new HashSet<>(typeRegistry.types().keySet());
Set scalars = new HashSet<>(typeRegistry.scalars().keySet());
allTypeNames.addAll(scalars);
// detached types are all types minus the connected types.
Set detachedTypeNames = new HashSet<>(allTypeNames);
detachedTypeNames.removeAll(connectedTypes);
return detachedTypeNames;
}
Set buildAdditionalDirectiveDefinitions(BuildContext buildCtx) {
Set additionalDirectives = new LinkedHashSet<>();
TypeDefinitionRegistry typeRegistry = buildCtx.getTypeRegistry();
for (DirectiveDefinition directiveDefinition : typeRegistry.getDirectiveDefinitions().values()) {
GraphQLDirective directive = buildDirectiveDefinitionFromAst(buildCtx, directiveDefinition, inputTypeFactory(buildCtx));
buildCtx.addDirectiveDefinition(directive);
additionalDirectives.add(directive);
}
return additionalDirectives;
}
void addDirectivesIncludedByDefault(TypeDefinitionRegistry typeRegistry) {
// we synthesize this into the type registry - no need for them to add it
typeRegistry.add(DEPRECATED_DIRECTIVE_DEFINITION);
typeRegistry.add(SPECIFIED_BY_DIRECTIVE_DEFINITION);
}
private Optional getOperationNamed(String name, Map operationTypeDefs) {
return Optional.ofNullable(operationTypeDefs.get(name));
}
private DataFetcher dataFetcherOfLastResort(FieldWiringEnvironment environment) {
String fieldName = environment.getFieldDefinition().getName();
return new PropertyDataFetcher(fieldName);
}
private List directivesOf(List> typeDefinitions) {
return typeDefinitions.stream()
.map(TypeDefinition::getDirectives)
.filter(Objects::nonNull)
.flatMap(List::stream).collect(Collectors.toList());
}
private T directivesObserve(BuildContext buildCtx, T directiveContainer) {
if (!buildCtx.directiveWiringRequired) {
boolean requiresWiring = SchemaGeneratorDirectiveHelper.schemaDirectiveWiringIsRequired(directiveContainer, buildCtx.getTypeRegistry(), buildCtx.getWiring());
buildCtx.directiveWiringRequired = buildCtx.directiveWiringRequired | requiresWiring;
}
return directiveContainer;
}
}
