Automattic\WooCommerce\Vendor\GraphQL\Type

SchemaValidationContext::validateUnionMembers │ private │ WC 1.0

Method of the class: SchemaValidationContext{}

No Hooks.

Returns

null. Nothing (null).

Usage

// private - for code of main (parent) class only
$result = $this->validateUnionMembers( $union ): void;
$union(UnionType) (required)
.

SchemaValidationContext::validateUnionMembers() code WC 10.9.1

woocommerce/lib/packages/GraphQL/Type/SchemaValidationContext.php 
private function validateUnionMembers(UnionType $union): void
{
    $memberTypes = $union->getTypes();

    if ($memberTypes === []) {
        $this->reportError(
            "Union type {$union->name} must define one or more member types.",
            $this->getAllNodes($union)
        );
    }

    $includedTypeNames = [];

    foreach ($memberTypes as $memberType) {
        // @phpstan-ignore-next-line The generic type says this should not happen, but a user may use it wrong nonetheless
        if (! $memberType instanceof ObjectType) {
            $notObjectType = Utils::printSafe($memberType);
            $this->reportError(
                "Union type {$union->name} can only include Object types, it cannot include {$notObjectType}.",
                $this->getUnionMemberTypeNodes($union, $notObjectType)
            );
            continue;
        }

        if (isset($includedTypeNames[$memberType->name])) {
            $this->reportError(
                "Union type {$union->name} can only include type {$memberType->name} once.",
                $this->getUnionMemberTypeNodes($union, $memberType->name)
            );
            continue;
        }

        $includedTypeNames[$memberType->name] = true;
    }
}