Db::connect() - Code Metrics - Inspection of "一些修正" - top-think/framework - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Push — 6.0 ( 2a00ae...39e6cf )

by yun
created 2019-04-10 07:19 UTC
Db::connect() A

↳ Parent: Db
Complexity

Conditions	1
Paths	1
Size

Total Lines	4
Code Lines	2
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	3
CRAP Score	1
Importance

Changes
Metric	Value
cc	1
eloc	2
nc	1
nop	2
dl	0
loc	4
ccs	3
cts	3
cp	1
crap	1
rs	10
c	0
b	0
f	0
<?php
// +----------------------------------------------------------------------

// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <[email protected]>
// +----------------------------------------------------------------------
declare (strict_types = 1);

namespace think;

use InvalidArgumentException;
use think\db\Connection;
use think\db\Query;
use think\db\Raw;
use think\exception\DbException;

/**
 * Class Db
 * @package think

 * @mixin Query

 */

class Db
{
    /**
     * 当前数据库连接对象
     * @var Connection
     */
    protected $connection;

    /**
     * 数据库连接实例
     * @var array
     */
    protected $instance = [];

    /**
     * Event对象
     * @var Event
     */
    protected $event;

    /**
     * 数据库配置
     * @var array
     */
    protected $option = [];

    /**
     * SQL监听
     * @var array
     */
    protected $listen = [];

    /**
     * 查询次数
     * @var int
     */
    protected $queryTimes = 0;

    /**
     * 架构函数
     * @param array $config 连接配置

     * @access public
     */
    public function __construct(array $config = [])
    {
        $this->option = $config;

        $this->connect($config);
    }

    /**

     * @param Event  $event

     * @param Config $config

     * @return Db

     * @codeCoverageIgnore
     */
    public static function __make(Event $event, Config $config)

    {
        $db = new static($config->get('database'));
        $db = new static(/** @scrutinizer ignore-type */ $config->get('database'));

        $db->setEvent($event);

        return $db;
    }

    /**
     * 切换数据库连接
     * @access public
     * @param mixed       $config 连接配置

     * @param bool|string $name   连接标识 true 强制重新连接

     * @return $this
     */
    public function connect($config = [], $name = false)
    {
        $this->connection = $this->instance($this->parseConfig($config), $name);
        return $this;
    }

    /**
     * 取得数据库连接类实例
     * @access public
     * @param array       $config 连接配置

     * @param bool|string $name   连接标识 true 强制重新连接

     * @return Connection
     */
    public function instance(array $config = [], $name = false)
    {
        if (false === $name) {
            $name = md5(serialize($config));
        }

        if (true === $name || !isset($this->instance[$name])) {

            if (empty($config['type'])) {
                throw new InvalidArgumentException('Undefined db type');
            }

            if (true === $name) {
                $name = md5(serialize($config));
            }

            $this->instance[$name] = App::factory($config['type'], '\\think\\db\\connector\\', $config);
        }

        return $this->instance[$name];
    }

    /**
     * 使用表达式设置数据
     * @access public
     * @param string $value 表达式

     * @return Raw
     */
    public function raw(string $value): Raw
    {
        return new Raw($value);
    }

    /**
     * 更新查询次数
     * @access public
     * @return void
     */
    public function updateQueryTimes(): void
    {
        $this->queryTimes++;
    }

    /**
     * 获得查询次数
     * @access public
     * @return integer
     */
    public function getQueryTimes(): int
    {
        return $this->queryTimes;
    }

    /**
     * 数据库连接参数解析
     * @access private
     * @param mixed $config

     * @return array
     */
    private function parseConfig($config): array

    {
        if (empty($config)) {
            $config = $this->option;
        } elseif (is_string($config) && isset($this->option[$config])) {
            // 支持读取配置参数
            $config = $this->option[$config];
        }

        if (!is_array($config)) {
            throw new DbException('database config error:' . $config);
        }

        return $config;
    }

    /**
     * 获取数据库的配置参数
     * @access public
     * @param string $name 参数名称

     * @return mixed
     */
    public function getConfig(string $name = '')
    {
        return $name ? ($this->option[$name] ?? null) : $this->option;
    }

    /**
     * 创建一个新的查询对象
     * @access public
     * @param string|array $connection 连接配置信息

     * @return mixed
     */
    public function buildQuery($connection = [])
    {
        return $this->connect($connection)->newQuery();
    }

    /**
     * 监听SQL执行
     * @access public
     * @param callable $callback 回调方法

     * @return void
     */
    public function listen(callable $callback): void
    {
        $this->listen[] = $callback;
    }

    /**
     * 获取监听SQL执行
     * @access public
     * @return array
     */
    public function getListen(): array
    {
        return $this->listen;
    }

    /**
     * 设置Event对象
     * @param Event $event

     */

    public function setEvent(Event $event)
    {
        $this->event = $event;
    }

    /**
     * 注册回调方法
     * @access public
     * @param string   $event    事件名

     * @param callable $callback 回调方法

     * @return void
     */
    public function event(string $event, callable $callback): void
    {
        if ($this->event) {
            $this->event->listen('db.' . $event, $callback);
        }
    }

    /**
     * 触发事件
     * @access public
     * @param string $event  事件名

     * @param mixed  $params 传入参数

     * @param bool   $once

     * @return mixed
     */
    public function trigger(string $event, $params = null, bool $once = false)
    {
        if ($this->event) {
            return $this->event->trigger('db.' . $event, $params, $once);
        }
    }

    /**
     * 创建一个新的查询对象
     * @access protected
     * @param Connection $connection 连接对象

     * @return mixed
     */
    protected function newQuery($connection = null)
    {
        /** @var Query $query */

        $connection = $connection ?: $this->connection;
        $class      = $connection->getQueryClass();
        $query      = new $class($connection);

        $query->setDb($this);

        return $query;
    }

    public function __call($method, $args)

    {
        $query = $this->newQuery($this->connection);

        return call_user_func_array([$query, $method], $args);
    }
}

top-think / framework

Push — 6.0 ( 2a00ae...39e6cf )

Db::connect() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

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