vendor/topthink/framework/src/think/Db.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2021 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace think;

/**
 * 数据库管理类
 * @package think
 * @property Config $config
 */
class Db extends DbManager
{
    /**
     * @param Event  $event
     * @param Config $config
     * @param Log    $log
     * @param Cache  $cache
     * @return Db
     * @codeCoverageIgnore
     */
    public static function __make(Event $event, Config $config, Log $log, Cache $cache)
    {
        $db = new static();
        $db->setConfig($config);
        $db->setEvent($event);
        $db->setLog($log);

        $store = $db->getConfig('cache_store');
        $db->setCache($cache->store($store));
        $db->triggerSql();

        return $db;
    }

    /**
     * 注入模型对象
     * @access public
     * @return void
     */
    protected function modelMaker()
    {
    }

    /**
     * 设置配置对象
     * @access public
     * @param Config $config 配置对象
     * @return void
     */
    public function setConfig($config): void
    {