Class DataFetcherHandlerMethod

java.lang.Object

org.springframework.graphql.data.method.HandlerMethod

org.springframework.graphql.data.method.InvocableHandlerMethodSupport

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

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

public class DataFetcherHandlerMethod
extends DataFetcherHandlerMethodSupport

Invocable handler to use as a DataFetcher.

Since:

1.0.0

Author:

Rossen Stoyanchev

Nested Class Summary

Nested classes/interfaces inherited from class HandlerMethod

HandlerMethod.HandlerMethodParameter

Field Summary

Fields inherited from class DataFetcherHandlerMethodSupport

resolvers

Fields inherited from class HandlerMethod

logger

Constructor Summary

Constructors

Constructor	Description
DataFetcherHandlerMethod(HandlerMethod handlerMethod, HandlerMethodArgumentResolverComposite resolvers, @Nullable BiConsumer<Object, @Nullable Object[]> validationHelper, @Nullable Executor executor, boolean subscription)	Deprecated, for removal: This API element is subject to removal in a future version. in favor of alternative constructor
DataFetcherHandlerMethod(HandlerMethod handlerMethod, HandlerMethodArgumentResolverComposite resolvers, @Nullable BiConsumer<Object, @Nullable Object[]> validationHelper, @Nullable Executor executor, boolean invokeAsync, boolean subscription)	Constructor with a parent handler method.

Method Summary

Modifier and Type	Method	Description
@Nullable Object	invoke(graphql.schema.DataFetchingEnvironment environment)	Invoke the method after resolving its argument values in the context of the given DataFetchingEnvironment.
@Nullable Object	invoke(graphql.schema.DataFetchingEnvironment environment, Object... providedArgs)	Variant of invoke(DataFetchingEnvironment) that also accepts "given" arguments, which are matched by type.

Methods inherited from class DataFetcherHandlerMethodSupport

getMethodArgumentValues, getResolvers

Methods inherited from class InvocableHandlerMethodSupport

doInvoke, toArgsMono

Methods inherited from class HandlerMethod

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

Methods inherited from class Object

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

Constructor Details

DataFetcherHandlerMethod

@Deprecated(since="1.3.0",
            forRemoval=true)
public DataFetcherHandlerMethod(HandlerMethod handlerMethod,
 HandlerMethodArgumentResolverComposite resolvers,
 @Nullable BiConsumer<Object, @Nullable Object[]> validationHelper,
 @Nullable Executor executor,
 boolean subscription)

Deprecated, for removal: This API element is subject to removal in a future version.

in favor of alternative constructor

Constructor with a parent handler method.

Parameters:

handlerMethod - the handler method

resolvers - the argument resolvers

validationHelper - to apply bean validation with

executor - an Executor to use for Callable return values

subscription - whether the field being fetched is of subscription type

DataFetcherHandlerMethod

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

Constructor with a parent handler method.

Parameters:

handlerMethod - the handler method

resolvers - the argument resolvers

validationHelper - to apply bean validation with

executor - an Executor to use for Callable return values

invokeAsync - whether to invoke the method through the Executor

subscription - whether the field being fetched is of subscription type

Since:

1.3.0

Method Details

invoke

public @Nullable Object invoke(graphql.schema.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 environment to resolve arguments from

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.

invoke

public @Nullable Object invoke(graphql.schema.DataFetchingEnvironment environment,
 Object... providedArgs)

Variant of invoke(DataFetchingEnvironment) that also accepts "given" arguments, which are matched by type.

Parameters:

environment - the data fetching environment

providedArgs - additional arguments to be matched by their type

Since:

1.2.0