<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Data;

/**
* Base Class for simple data Objects
* @SuppressWarnings(PHPMD.NumberOfChildren)
*/
abstract class AbstractDataObject
{
/**
* @var array
*/
protected $data;

/**
* Return Data Object data in array format.
*
* @return array
*/
public function toArray()
{
$data = $this->data;
$hasToArray = function ($model) {
return is_object($model) && method_exists($model, 'toArray') && is_callable([$model, 'toArray']);
};
foreach ($data as $key => $value) {
if ($hasToArray($value)) {
$data[$key] = $value->toArray();
} elseif (is_array($value)) {
foreach ($value as $nestedKey => $nestedValue) {
if ($hasToArray($nestedValue)) {
$value[$nestedKey] = $nestedValue->toArray();
}
}
$data[$key] = $value;
}
}
return $data;
}

/**
* Retrieves a value from the data array if set, or null otherwise.
*
* @param string $key
* @return mixed|null
*/
protected function get($key)
{
return $this->data[$key] ?? null;
}
}