Class GraphQLCodeRegistry

java.lang.Object

graphql.schema.GraphQLCodeRegistry

@PublicApi
public class GraphQLCodeRegistry
extends Object

The GraphQLCodeRegistry holds that execution code that is associated with graphql types, namely the DataFetchers associated with fields, the TypeResolvers associated with abstract types and the GraphqlFieldVisibility

For legacy reasons these code functions can still exist on the original type objects but this will be removed in a future version. Once removed the type system objects will be able have proper hashCode/equals methods and be checked for proper equality.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	GraphQLCodeRegistry.Builder

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<FieldCoordinates, DataFetcherFactory<?>>	dataFetcherMap
private final DataFetcherFactory<?>	defaultDataFetcherFactory
private final GraphqlFieldVisibility	fieldVisibility
private final Map<String, DataFetcherFactory<?>>	systemDataFetcherMap
private final Map<String, TypeResolver>	typeResolverMap

Constructor Summary

Constructors

Modifier	Constructor	Description
private	GraphQLCodeRegistry(GraphQLCodeRegistry.Builder builder)

Method Summary

Modifier and Type	Method	Description
DataFetcher<?>	getDataFetcher(FieldCoordinates coordinates, GraphQLFieldDefinition fieldDefinition)	Returns a data fetcher associated with a field located at specified coordinates.
DataFetcher<?>	getDataFetcher(GraphQLFieldsContainer parentType, GraphQLFieldDefinition fieldDefinition)	Deprecated. This is confusing because GraphQLInterfaceTypes cant have data fetchers.
DataFetcher<?>	getDataFetcher(GraphQLObjectType parentType, GraphQLFieldDefinition fieldDefinition)	Returns a data fetcher associated with a field within an object type
private static DataFetcher<?>	getDataFetcherImpl(FieldCoordinates coordinates, GraphQLFieldDefinition fieldDefinition, Map<FieldCoordinates, DataFetcherFactory<?>> dataFetcherMap, Map<String, DataFetcherFactory<?>> systemDataFetcherMap, DataFetcherFactory<?> defaultDataFetcherFactory)
GraphqlFieldVisibility	getFieldVisibility()
TypeResolver	getTypeResolver(GraphQLInterfaceType interfaceType)	Returns the type resolver associated with this interface type
TypeResolver	getTypeResolver(GraphQLUnionType unionType)	Returns the type resolver associated with this union type
private static TypeResolver	getTypeResolverForInterface(GraphQLInterfaceType parentType, Map<String, TypeResolver> typeResolverMap)
private static TypeResolver	getTypeResolverForUnion(GraphQLUnionType parentType, Map<String, TypeResolver> typeResolverMap)
boolean	hasDataFetcher(FieldCoordinates coordinates)	Returns true if the code registry contained a data fetcher at the specified co-ordinates
private static boolean	hasDataFetcherImpl(FieldCoordinates coords, Map<FieldCoordinates, DataFetcherFactory<?>> dataFetcherMap, Map<String, DataFetcherFactory<?>> systemDataFetcherMap)
static GraphQLCodeRegistry.Builder	newCodeRegistry()
static GraphQLCodeRegistry.Builder	newCodeRegistry(GraphQLCodeRegistry existingCodeRegistry)	Returns a new builder of GraphQLCodeRegistry objects based on the existing one
GraphQLCodeRegistry	transform(Consumer<GraphQLCodeRegistry.Builder> builderConsumer)	This helps you transform the current GraphQLCodeRegistry object into another one by starting a builder with all the current values and allows you to transform it how you want.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

dataFetcherMap

private final Map<FieldCoordinates, DataFetcherFactory<?>> dataFetcherMap

systemDataFetcherMap

private final Map<String, DataFetcherFactory<?>> systemDataFetcherMap

typeResolverMap

private final Map<String, TypeResolver> typeResolverMap

fieldVisibility

private final GraphqlFieldVisibility fieldVisibility

defaultDataFetcherFactory

private final DataFetcherFactory<?> defaultDataFetcherFactory

Constructor Details

GraphQLCodeRegistry

private GraphQLCodeRegistry(GraphQLCodeRegistry.Builder builder)

Method Details

getFieldVisibility

public GraphqlFieldVisibility getFieldVisibility()

Returns:

the GraphqlFieldVisibility

getDataFetcher

@Deprecated
public DataFetcher<?> getDataFetcher(GraphQLFieldsContainer parentType,
 GraphQLFieldDefinition fieldDefinition)

Deprecated.

This is confusing because GraphQLInterfaceTypes cant have data fetchers. At runtime only a GraphQLObjectType can be used to fetch a field. This method allows the mapping to be made, but it is never useful if an interface is passed in.

Returns a data fetcher associated with a field within a container type

Parameters:

parentType - the container type

fieldDefinition - the field definition

Returns:

the DataFetcher associated with this field. All fields have data fetchers

See Also:

• getDataFetcher(GraphQLObjectType, GraphQLFieldDefinition)

getDataFetcher

public DataFetcher<?> getDataFetcher(GraphQLObjectType parentType,
 GraphQLFieldDefinition fieldDefinition)

Returns a data fetcher associated with a field within an object type

Parameters:

parentType - the container type

fieldDefinition - the field definition

Returns:

the DataFetcher associated with this field. All fields have data fetchers

getDataFetcher

public DataFetcher<?> getDataFetcher(FieldCoordinates coordinates,
 GraphQLFieldDefinition fieldDefinition)

Returns a data fetcher associated with a field located at specified coordinates.

Parameters:

coordinates - the field coordinates

fieldDefinition - the field definition

Returns:

the DataFetcher associated with this field. All fields have data fetchers

hasDataFetcher

public boolean hasDataFetcher(FieldCoordinates coordinates)

Returns true if the code registry contained a data fetcher at the specified co-ordinates

Parameters:

coordinates - the field coordinates

Returns:

the true if there is a data fetcher at those co-ordinates

getDataFetcherImpl

private static DataFetcher<?> getDataFetcherImpl(FieldCoordinates coordinates,
 GraphQLFieldDefinition fieldDefinition,
 Map<FieldCoordinates, DataFetcherFactory<?>> dataFetcherMap,
 Map<String, DataFetcherFactory<?>> systemDataFetcherMap,
 DataFetcherFactory<?> defaultDataFetcherFactory)

hasDataFetcherImpl

private static boolean hasDataFetcherImpl(FieldCoordinates coords,
 Map<FieldCoordinates, DataFetcherFactory<?>> dataFetcherMap,
 Map<String, DataFetcherFactory<?>> systemDataFetcherMap)

getTypeResolver

public TypeResolver getTypeResolver(GraphQLInterfaceType interfaceType)

Returns the type resolver associated with this interface type

Parameters:

interfaceType - the interface type

Returns:

a non null TypeResolver

getTypeResolver

public TypeResolver getTypeResolver(GraphQLUnionType unionType)

Returns the type resolver associated with this union type

Parameters:

unionType - the union type

Returns:

a non null TypeResolver

getTypeResolverForInterface

private static TypeResolver getTypeResolverForInterface(GraphQLInterfaceType parentType,
 Map<String, TypeResolver> typeResolverMap)

getTypeResolverForUnion

private static TypeResolver getTypeResolverForUnion(GraphQLUnionType parentType,
 Map<String, TypeResolver> typeResolverMap)

transform

public GraphQLCodeRegistry transform(Consumer<GraphQLCodeRegistry.Builder> builderConsumer)

This helps you transform the current GraphQLCodeRegistry object into another one by starting a builder with all the current values and allows you to transform it how you want.

Parameters:

builderConsumer - the consumer code that will be given a builder to transform

Returns:

a new GraphQLCodeRegistry object based on calling build on that builder

newCodeRegistry

public static GraphQLCodeRegistry.Builder newCodeRegistry()

Returns:

a new builder of GraphQLCodeRegistry objects

newCodeRegistry

public static GraphQLCodeRegistry.Builder newCodeRegistry(GraphQLCodeRegistry existingCodeRegistry)

Returns a new builder of GraphQLCodeRegistry objects based on the existing one

Parameters:

existingCodeRegistry - the existing code registry to use

Returns:

a new builder of GraphQLCodeRegistry objects