qii/Qii/Driver/Model.php

<?php
/**
 * 数据库分发器
 * @author Jinhui Zhu <jinhui.zhu@live.cn>2016-01-19 18:31
 * 使用方法:
 * 1.
 * namespace Model;
 *
 * use \Qii\Model;

 * class comments extends Model
 * {
 * 		public function __construct()
 * 		{
 * 			parent::__construct();
 * 			$this->setRules(new \Qii\Driver\Rules(\Qii\Autoloader\Import::includes('configure/table/adcycle.comments.config.php')));
 * 		}
 * }
 * 2.
 * $test = _M(new \Qii\Driver\Rules(\Qii\Autoloader\Import::includes('configure/table/test.config.php')));
 * $fields = array('id' => 1, 'name' => 'test');
 * $test->save($fields);
 */
namespace Qii\Driver;

class Model
{
	const VERSION = '1.2';
	/**
	 * @var $_allow 允许使用的数据库驱动类新
	 */
	protected $_allow = array('pdo', 'mysql', 'mysqli');
	/**
	 * @var $db 数据库实例
	 */
	public $db = null;
	/**
	 * 数据库配置文件
	 */
	protected $_dbInfo;
	/**
	 * 数据库驱动
	 */
	protected $_driver = 'pdo';
	/**
	 * @var $_load 加载类
	 */
	public $_load;

	/**
	 * @var $_language 语言包
	 */
	public $_language;
	/**
	 * @var array $rules 数据表规则
	 */
	private $rules = null;
	/**
	 * @var \Qii_Driver_Easy $model
	 */
	private $model = array();
	/**
	 * @var Qii_Request_Abstract $_request 请求类
	 */
	protected $_request;
	/**
	 * @var $_helper helper类
	 */
	protected $_helper;

	public function __construct()
	{
		$this->_load = \Qii\Autoloader\Psr4::getInstance()->loadClass('\Qii\Autoloader\Loader');
		$this->_language = \Qii\Autoloader\Psr4::getInstance()->loadClass('\Qii\Language\Loader');
		$this->_request = \Qii\Autoloader\Psr4::getInstance()->loadClass('Qii\Request\Http');
		$this->_helper = \Qii\Autoloader\Psr4::getInstance()->loadClass('Qii\Autoloader\Helper');
		$this->_dbInfo = \Qii\Config\Register::getAppConfigure(\Qii\Config\Register::get(\Qii\Config\Consts::APP_DB));
		if (isset($this->_dbInfo['driver'])) {
			$this->_driver = $this->_dbInfo['driver'];
		}
		if (!in_array($this->_driver, $this->_allow)) {
			$this->_driver = array_shift($this->_allow);
		}
		\Qii\Autoloader\Import::requires(array(
			Qii_DIR . DS . 'Qii' . DS . 'Driver' . DS . 'Base.php',
			Qii_DIR . DS . 'Qii' . DS . 'Driver' . DS . 'ConnBase.php',
			Qii_DIR . DS . 'Qii' . DS . 'Driver' . DS . 'ConnIntf.php',
			Qii_DIR . DS . 'Qii' . DS . 'Driver' . DS . ucWords($this->_driver) . DS . 'Connection.php',
			Qii_DIR . DS . 'Qii' . DS . 'Driver' . DS . ucWords($this->_driver) . DS . 'Driver.php',
		));
		$this->db = \Qii\Autoloader\Psr4::getInstance()->loadClass(
		    '\Qii\Driver\\' . ucWords($this->_driver) . '\Driver',
            \Qii\Autoloader\Psr4::getInstance()->loadClass(
                '\Qii\Driver\\' . ucWords($this->_driver) . '\Connection'
            )
        );
		$this->db->_debugSQL = isset($this->_dbInfo['debug']) ? $this->_dbInfo['debug'] : false;
		return $this;
	}
	/**
	 * 将属性转到DB类中去
	 */
	public function __get($attr)
	{
		if($this->db)
		{
			return $this->db->$attr;
		}
		return null;
	}

	/**
	 * 获取当前使用的数据库
	 */
	public function getUseDB()
	{
		return $this->db->useDB;
	}

	/**
	 * 设置规则
	 * @param array $rules
	 */
	public function setRules(\Qii\Driver\Rules $rules)
	{
		if (empty($rules)) throw new \Exception(\Qii::i('Please set rules first'), __LINE__);
		$this->rules = $rules;
		return $this;
	}

	/**
	 * 生成数据库结构
	 */
	public function tableStruct()
	{
		$this->checkRulesInstance();
		$struct = array_flip($this->rules->getFields());
		foreach ($struct AS $key => $val) {
			$struct[$key] = '';
		}
		return $struct;
	}

	/**
	 * 检查是否已经设置规则
	 */
	final public function checkRulesInstance()
	{
		if ($this->rules == null) throw new \Exception(\Qii::i('Please set rules first'), __LINE__);
	}
	/**
	 * 获取当前初始化的model
	 * @return \Qii_Driver_Easy
	 */
	final public function getInstance()
	{
		$this->checkRulesInstance();
		$tableName = $this->rules->getTableName();
		if(!isset($this->model[$tableName])) $this->model[$tableName] = _DBDriver($this->rules);
		return $this->model[$tableName];
	}
	/**
	 * 设置主键
	 * @param array $privateKey  设置主键
	 * @return Object
	 */
	final public function setPrivateKey($privateKey = array())
	{
		$this->getInstance()->setPrivateKey($privateKey);
		return $this;
	}

	/**
	 * 检查数据是否存在
	 * @param array $fields 数据
	 * @return \Qii\Driver\Response
	 */
	final public function _exist($fields, $privateKey = array())
	{
		return $this->getInstance()->setPrivateKey($privateKey)->setFieldsVal($fields)->_exist();
	}

	/**
	 * 保存数据
	 * @param array $fields 数据
	 * @return \Qii\Driver\Response
	 */
	final public function _save($fields, $privateKey = array())
	{
		return $this->getInstance()->setPrivateKey($privateKey)->setFieldsVal($fields)->_save();
	}

	/**
	 * 更新数据
	 * @param array $fields 数据
	 * @return \Qii\Driver\Response
	 */
	final public function _update($fields, $privateKey = array())
	{
		return $this->getInstance()->setPrivateKey($privateKey)->setFieldsVal($fields)->_update();
	}

	/**
	 * 删除数据
	 * @param array $fields 数据
	 * @return \Qii_Response
	 */
	final public function _remove($fields, $privateKey = array())
	{
		return $this->getInstance()->setPrivateKey($privateKey)->setFieldsVal($fields)->_remove();
	}

	/**
	 * 方法不存在的时候调用$this->db下的方法
	 * @param string $method 方法名
	 * @param mix $args 参数
	 */
	public function __call($method, $args)
	{
		if ($this->db) return call_user_func_array(array($this->db, $method), $args);
	}
}