Package org.springframework.graphql.data.method.annotation.support

Class DataFetcherHandlerMethod

java.lang.Object

org.springframework.graphql.data.method.HandlerMethod

org.springframework.graphql.data.method.InvocableHandlerMethodSupport

org.springframework.graphql.data.method.annotation.support.DataFetcherHandlerMethod

public class DataFetcherHandlerMethod
extends InvocableHandlerMethodSupport

An extension of HandlerMethod for annotated handler methods adapted to DataFetcher with DataFetchingEnvironment as their input.

Since:

1.0.0

Author:

Rossen Stoyanchev

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.graphql.data.method.HandlerMethod

HandlerMethod.HandlerMethodParameter

Field Summary

Fields inherited from class org.springframework.graphql.data.method.HandlerMethod

logger

Constructor Summary

Constructors

Constructor	Description
DataFetcherHandlerMethod(HandlerMethod handlerMethod, HandlerMethodArgumentResolverComposite resolvers, BiConsumer<Object,Object[]> validationHelper, Executor executor, boolean subscription)	Constructor with a parent handler method.

Method Summary

Modifier and Type	Method	Description
HandlerMethodArgumentResolverComposite	getResolvers()	Return the configured argument resolvers.
Object	invoke(DataFetchingEnvironment environment)	Invoke the method after resolving its argument values in the context of the given DataFetchingEnvironment.

Methods inherited from class org.springframework.graphql.data.method.InvocableHandlerMethodSupport

doInvoke, toArgsMono

Methods inherited from class org.springframework.graphql.data.method.HandlerMethod

assertTargetBean, createWithResolvedBean, equals, findProvidedArgument, formatArgumentError, formatInvokeError, getBean, getBeanType, getBridgedMethod, getMethod, getMethodAnnotation, getMethodParameters, getReturnType, getReturnValueType, getShortLogMessage, hashCode, hasMethodAnnotation, isVoid, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

DataFetcherHandlerMethod

public DataFetcherHandlerMethod(HandlerMethod handlerMethod,
 HandlerMethodArgumentResolverComposite resolvers,
 @Nullable
 BiConsumer<Object,Object[]> validationHelper,
 @Nullable
 Executor executor,
 boolean subscription)

Constructor with a parent handler method.

Parameters:

handlerMethod - the handler method

resolvers - the argument resolvers

validationHelper - to apply bean validation with

subscription - whether the field being fetched is of subscription type

Method Details

getResolvers

public HandlerMethodArgumentResolverComposite getResolvers()

Return the configured argument resolvers.

invoke

@Nullable
public Object invoke(DataFetchingEnvironment environment)

Invoke the method after resolving its argument values in the context of the given DataFetchingEnvironment.

Argument values are commonly resolved through HandlerMethodArgumentResolvers. The providedArgs parameter however may supply argument values to be used directly, i.e. without argument resolution. Provided argument values are checked before argument resolvers.

Parameters:

environment - the GraphQL DataFetchingEnvironment to use to resolve arguments.

Returns:

the raw value returned by the invoked method, possibly a Mono in case a method argument requires asynchronous resolution; Mono<Throwable is returned if invocation fails.