Package io.smallrye.graphql.execution.datafetcher

Class AbstractStreamingDataFetcher<K,T>

java.lang.Object

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

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

Type Parameters:

K -

T -

All Implemented Interfaces:

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

Direct Known Subclasses:

MultiDataFetcher, PublisherDataFetcher

public abstract class AbstractStreamingDataFetcher<K,T>
extends AbstractDataFetcher<K,T>

Handle Stream calls with Multi, used as base for Multi and Publisher

Author:

Phillip Kruger (phillip.kruger@redhat.com)

Field Summary

Fields inherited from class io.smallrye.graphql.execution.datafetcher.AbstractDataFetcher

argumentHelper, batchLoaderHelper, errorResultHelper, eventEmitter, fieldHelper, measurementIds, metricsEmitter, operation, operationInvoker, type

Constructor Summary

Constructors

Constructor	Description
AbstractStreamingDataFetcher(Operation operation, Type type)

Method Summary

Modifier and Type	Method	Description
protected abstract io.smallrye.mutiny.Multi<List<T>>	handleUserBatchLoad(graphql.schema.DataFetchingEnvironment dfe, Object[] arguments)
protected abstract io.smallrye.mutiny.Multi<?>	handleUserMethodCall(graphql.schema.DataFetchingEnvironment dfe, Object[] transformedArguments)
protected <O> O	invokeAndTransform(Context context, graphql.schema.DataFetchingEnvironment dfe, graphql.execution.DataFetcherResult.Builder<Object> resultBuilder, Object[] transformedArguments)
protected CompletionStage<List<T>>	invokeBatch(graphql.schema.DataFetchingEnvironment dfe, Object[] arguments)
protected <O> O	invokeFailure(graphql.execution.DataFetcherResult.Builder<Object> resultBuilder)

Methods inherited from class io.smallrye.graphql.execution.datafetcher.AbstractDataFetcher

get, load

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractStreamingDataFetcher

public AbstractStreamingDataFetcher(Operation operation,
 Type type)

Method Details

invokeAndTransform

protected <O> O invokeAndTransform(Context context,
 graphql.schema.DataFetchingEnvironment dfe,
 graphql.execution.DataFetcherResult.Builder<Object> resultBuilder,
 Object[] transformedArguments)
                            throws Exception

Specified by:

invokeAndTransform in class AbstractDataFetcher<K,T>

Throws:

Exception

handleUserMethodCall

protected abstract io.smallrye.mutiny.Multi<?> handleUserMethodCall(graphql.schema.DataFetchingEnvironment dfe,
 Object[] transformedArguments)
                                                             throws Exception

Throws:

Exception

invokeFailure

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

Specified by:

invokeFailure in class AbstractDataFetcher<K,T>

invokeBatch

protected CompletionStage<List<T>> invokeBatch(graphql.schema.DataFetchingEnvironment dfe,
 Object[] arguments)

Specified by:

invokeBatch in class AbstractDataFetcher<K,T>

handleUserBatchLoad

protected abstract io.smallrye.mutiny.Multi<List<T>> handleUserBatchLoad(graphql.schema.DataFetchingEnvironment dfe,
 Object[] arguments)
                                                                  throws Exception

Throws:

Exception