Package io.smallrye.graphql.execution.datafetcher.helper

Class ArgumentHelper

java.lang.Object

io.smallrye.graphql.execution.datafetcher.helper.AbstractHelper

io.smallrye.graphql.execution.datafetcher.helper.ArgumentHelper

public class ArgumentHelper
extends AbstractHelper

Help with the arguments when doing reflection calls Here we need to transform (if needed) the arguments, and then make sure we get the in the correct class type as expected by the method we want to call.

Author:

Phillip Kruger (phillip.kruger@redhat.com)

Field Summary

Fields inherited from class io.smallrye.graphql.execution.datafetcher.helper.AbstractHelper

classloadingService, mapAdapter

Constructor Summary

Constructors

Constructor	Description
ArgumentHelper(List<Argument> arguments)	We need the modeled arguments to create the correct values

Method Summary

Modifier and Type	Method	Description
protected Object	afterRecursiveTransform(Object fieldValue, Field field, graphql.schema.DataFetchingEnvironment dfe)	Here we have the potential transformed input and just need to get the correct type
List<Object>	getArguments(graphql.schema.DataFetchingEnvironment dfe)	This gets a list of arguments that we need to all the method.
List<Object>	getArguments(graphql.schema.DataFetchingEnvironment dfe, boolean excludeSource)

Methods inherited from class io.smallrye.graphql.execution.datafetcher.helper.AbstractHelper

getArrayType, getReflectionInvokerForInput, getReflectionInvokerForOutput, getTransformer, shouldAdapt, shouldAdaptTo, shouldAdaptWith, shouldAutoAdaptWithMap, shouldTransform, transformOrAdapt

Methods inherited from class java.lang.Object

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

Constructor Details

ArgumentHelper

public ArgumentHelper(List<Argument> arguments)

We need the modeled arguments to create the correct values

Parameters:

arguments - the arguments

Method Details

getArguments

public List<Object> getArguments(graphql.schema.DataFetchingEnvironment dfe)
                          throws AbstractDataFetcherException

This gets a list of arguments that we need to all the method. We need to make sure the arguments is in the correct class type and, if needed, transformed

Parameters:

dfe - the Data Fetching Environment from graphql-java

Returns:

a (ordered) List of all argument values

Throws:

AbstractDataFetcherException

getArguments

public List<Object> getArguments(graphql.schema.DataFetchingEnvironment dfe,
 boolean excludeSource)
                          throws AbstractDataFetcherException

Throws:

AbstractDataFetcherException

afterRecursiveTransform

protected Object afterRecursiveTransform(Object fieldValue,
 Field field,
 graphql.schema.DataFetchingEnvironment dfe)
                                  throws AbstractDataFetcherException

Here we have the potential transformed input and just need to get the correct type

Parameters:

fieldValue - the input from graphql-java, potentially transformed

field - the field as created while scanning

dfe - DataFetchingEnvironment from graphql-java

Returns:

the value to use in the method call

Throws:

AbstractDataFetcherException