Package graphql.execution

Class NonNullableFieldValidator

java.lang.Object

graphql.execution.NonNullableFieldValidator

public class NonNullableFieldValidator
extends java.lang.Object

This will check that a value is non-null when the type definition says it must be and, it will throw NonNullableFieldWasNullException if this is not the case. See: https://spec.graphql.org/October2021/#sec-Errors-and-Non-Nullability

Constructor Summary

Constructors

Constructor	Description
NonNullableFieldValidator(ExecutionContext executionContext, ExecutionStepInfo executionStepInfo)

Method Summary

Modifier and Type	Method	Description
<T> T	validate(ExecutionStrategyParameters parameters, T result)	Called to check that a value is non null if the type requires it to be non null

Methods inherited from class java.lang.Object

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

Constructor Detail

NonNullableFieldValidator

public NonNullableFieldValidator(ExecutionContext executionContext,
                                 ExecutionStepInfo executionStepInfo)

Method Detail

validate

public <T> T validate(ExecutionStrategyParameters parameters,
                      T result)
               throws NonNullableFieldWasNullException

Called to check that a value is non null if the type requires it to be non null

Type Parameters:

T - the type of the result

Parameters:

parameters - the execution strategy parameters

result - the result to check

Returns:

the result back

Throws:

NonNullableFieldWasNullException - if the value is null but the type requires it to be non null