Automattic\WooCommerce\Vendor\GraphQL\Validator\Rules

OverlappingFieldsCanBeMerged::findConflictsWithinSelectionSet │ protected │ WC 1.0

Find all conflicts found "within" a selection set, including those found via spreading in fragments. Called when visiting each SelectionSet in the Automattic\WooCommerce\Vendor\GraphQL Document.

Method of the class: OverlappingFieldsCanBeMerged{}

No Hooks.

Returns

null. Nothing (null).

Usage

// protected - for code of main (parent) or child class
$result = $this->findConflictsWithinSelectionSet( $context, ?Type $parentType, $selectionSet ): array;
$context(QueryValidationContext) (required)
.
?Type $parentType(required)
.
$selectionSet(SelectionSetNode) (required)
.

OverlappingFieldsCanBeMerged::findConflictsWithinSelectionSet() code WC 10.9.1

woocommerce/lib/packages/GraphQL/Validator/Rules/OverlappingFieldsCanBeMerged.php 
protected function findConflictsWithinSelectionSet(
    QueryValidationContext $context,
    ?Type $parentType,
    SelectionSetNode $selectionSet
): array {
    [$fieldMap, $fragmentNames] = $this->getFieldsAndFragmentNames(
        $context,
        $parentType,
        $selectionSet
    );

    $conflicts = [];

    // (A) Find all conflicts "within" the fields of this selection set.
    // Note: this is the *only place* `collectConflictsWithin` is called.
    $this->collectConflictsWithin(
        $context,
        $conflicts,
        $fieldMap
    );

    $fragmentNamesLength = count($fragmentNames);
    if ($fragmentNamesLength !== 0) {
        // (B) Then collect conflicts between these fields and those represented by
        // each spread fragment name found.
        $comparedFragments = [];
        for ($i = 0; $i < $fragmentNamesLength; ++$i) {
            $this->collectConflictsBetweenFieldsAndFragment(
                $context,
                $conflicts,
                $comparedFragments,
                false,
                $fieldMap,
                $fragmentNames[$i]
            );
            // (C) Then compare this fragment with all other fragments found in this
            // selection set to collect conflicts between fragments spread together.
            // This compares each item in the list of fragment names to every other item
            // in that same list (except for itself).
            for ($j = $i + 1; $j < $fragmentNamesLength; ++$j) {
                $this->collectConflictsBetweenFragments(
                    $context,
                    $conflicts,
                    false,
                    $fragmentNames[$i],
                    $fragmentNames[$j]
                );
            }
        }
    }

    return $conflicts;
}