io.smallrye.graphql.execution.datafetcher

Class AbstractDataFetcher<K,T>

java.lang.Object

io.smallrye.graphql.execution.datafetcher.AbstractDataFetcher<K,T>

Type Parameters:

K -

T -

All Implemented Interfaces:

graphql.schema.DataFetcher<T>, org.dataloader.BatchLoaderWithContext<K,T>

Direct Known Subclasses:

CompletionStageDataFetcher, DefaultDataFetcher, MultiDataFetcher, PublisherDataFetcher, UniDataFetcher

public abstract class AbstractDataFetcher<K,T>
extends Object
implements graphql.schema.DataFetcher<T>, org.dataloader.BatchLoaderWithContext<K,T>

The abstract data fetcher

Author:

Phillip Kruger (phillip.kruger@redhat.com)

Field Summary

Fields

Modifier and Type	Field and Description
protected ArgumentHelper	argumentHelper
protected BatchLoaderHelper	batchLoaderHelper
protected ErrorResultHelper	errorResultHelper
protected EventEmitter	eventEmitter
protected FieldHelper	fieldHelper
protected Operation	operation
protected ReflectionHelper	reflectionHelper

Constructor Summary

Constructors

Constructor and Description
AbstractDataFetcher(Operation operation, Config config)

Method Summary

Modifier and Type	Method and Description
T	get(graphql.schema.DataFetchingEnvironment dfe)
protected SmallRyeContext	getSmallRyeContext(graphql.schema.DataFetchingEnvironment dfe)
protected abstract <T> T	invokeAndTransform(graphql.schema.DataFetchingEnvironment dfe, graphql.execution.DataFetcherResult.Builder<Object> resultBuilder, Object[] transformedArguments)
protected abstract <T> T	invokeFailure(graphql.execution.DataFetcherResult.Builder<Object> resultBuilder)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.dataloader.BatchLoaderWithContext

load

Field Detail

operation

protected Operation operation

fieldHelper

protected FieldHelper fieldHelper

reflectionHelper

protected ReflectionHelper reflectionHelper

errorResultHelper

protected ErrorResultHelper errorResultHelper

argumentHelper

protected ArgumentHelper argumentHelper

eventEmitter

protected EventEmitter eventEmitter

batchLoaderHelper

protected BatchLoaderHelper batchLoaderHelper

Constructor Detail

AbstractDataFetcher

public AbstractDataFetcher(Operation operation,
                           Config config)

Method Detail

get

public T get(graphql.schema.DataFetchingEnvironment dfe)
      throws Exception

Specified by:

get in interface graphql.schema.DataFetcher<T>

Throws:

Exception

getSmallRyeContext

protected SmallRyeContext getSmallRyeContext(graphql.schema.DataFetchingEnvironment dfe)

invokeAndTransform

protected abstract <T> T invokeAndTransform(graphql.schema.DataFetchingEnvironment dfe,
                                            graphql.execution.DataFetcherResult.Builder<Object> resultBuilder,
                                            Object[] transformedArguments)
                                     throws AbstractDataFetcherException,
                                            Exception

Throws:

AbstractDataFetcherException

Exception

invokeFailure

protected abstract <T> T invokeFailure(graphql.execution.DataFetcherResult.Builder<Object> resultBuilder)