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

Constructor Summary

Constructors

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

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ArgumentHelper

public ArgumentHelper(List<Argument> arguments)

We need the modeled arguments to create the correct values

Parameters:

arguments - the arguments

Method Detail

getArguments

public Object[] getArguments(graphql.schema.DataFetchingEnvironment dfe)
                      throws org.eclipse.microprofile.graphql.GraphQLException,
                             DateTimeException,
                             ParseException,
                             NumberFormatException

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:

org.eclipse.microprofile.graphql.GraphQLException

DateTimeException

ParseException

NumberFormatException

afterRecursiveTransform

protected Object afterRecursiveTransform(Object fieldValue,
                                         Field field)
                                  throws org.eclipse.microprofile.graphql.GraphQLException

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

Returns:

the value to use in the method call

Throws:

org.eclipse.microprofile.graphql.GraphQLException