RightsSetter::deleteOneNegative

private function deleteOneNegative(array $right)
{
	$result = RightTable::delete($right['ID']);
	if($result->isSuccess())
	{
		$this->errorCollection->addFromResult($result);

		return false;
	}

	$firstNegative = false;
	foreach($this->getParentRights() as $parentRight)
	{
		if($this->isEqual($parentRight, $right))
		{
			$firstNegative = true;
			break;
		}
		if($this->isOpposite($parentRight, $right))
		{
			$firstNegative = false;
			break;
		}
	}

	if($firstNegative)
	{
		//parent negative is like current negative right ($right)
		return true;
	}


	/**
	 * Insert all simple rights in sub-tree before positive rights and negative rights.
	 */

	return true;
}