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

Interface HandlerDataFetcherExceptionResolver

All Superinterfaces:

DataFetcherExceptionResolver

public interface HandlerDataFetcherExceptionResolver
extends DataFetcherExceptionResolver

Extension of DataFetcherExceptionResolver with overloaded method to apply at the point of DataFetcher invocation to allow local exception handling.

Since:

1.3.0

Author:

Rossen Stoyanchev

Method Summary

Modifier and Type	Method	Description
default reactor.core.publisher.Mono<List<GraphQLError>>	resolveException(Throwable exception, DataFetchingEnvironment environment)	Resolve the given exception and return the error(s) to add to the response.
reactor.core.publisher.Mono<List<GraphQLError>>	resolveException(Throwable ex, DataFetchingEnvironment environment, Object handler)	Resolve an exception raised by the given handler.

Method Details

resolveException

default reactor.core.publisher.Mono<List<GraphQLError>> resolveException(Throwable exception,
 DataFetchingEnvironment environment)

Description copied from interface: DataFetcherExceptionResolver

Resolve the given exception and return the error(s) to add to the response.

Implementations can use GraphqlErrorBuilder.newError(DataFetchingEnvironment) to create an error with the coordinates of the target field, and use ErrorType to specify a category for the error.

Specified by:

resolveException in interface DataFetcherExceptionResolver

Parameters:

exception - the exception to resolve

environment - the environment for the invoked DataFetcher

Returns:

a Mono with errors to add to the GraphQL response; if the Mono completes with an empty List, the exception is resolved without any errors added to the response; if the Mono completes empty, without emitting a List, the exception remains unresolved and that allows other resolvers to resolve it.

resolveException

reactor.core.publisher.Mono<List<GraphQLError>> resolveException(Throwable ex,
 DataFetchingEnvironment environment,
 @Nullable
 Object handler)

Resolve an exception raised by the given handler.

Parameters:

ex - the exception to resolve

environment - the environment for the invoked DataFetcher

handler - the handler that raised the exception, if applicable

Returns:

a Mono with resolved GraphQLErrors as specified in DataFetcherExceptionResolver.resolveException(Throwable, DataFetchingEnvironment)