/**
* @param StackFrameReadOnlyInterface|null $previous
*/
public function __construct(StackFrameReadOnlyInterface $previous = null)
{
settype($level, 'int');
$level = $previous === null ? 1 : $previous->getLevel() + 1;
// debug check
$isOk = $level <= 2 || $previous !== null && $previous->getRelationship() !== null;
$isOk ?: Exceptions::throwLogicException();
$this->level = $level;
$this->previous = $previous;
}
/**
* If relationship from 'parent' to 'current' resource passes field set filter.
*
* @param Frame $current
* @param Frame $previous
*
* @return bool
*/
private function isRelationshipInFieldSet(Frame $current, Frame $previous)
{
$parentType = $previous->getResource()->getType();
$parameters = $this->parameterAnalyzer->getParameters();
if (($fieldSet = $parameters->getFieldSet($parentType)) === null) {
return true;
}
return in_array($current->getRelationship()->getName(), $fieldSet, true) === true;
}