@qingjieshouliang M1n1 Shira0ka

M1n1 Shira0ka File Manager

Current Path : /www/wwwroot/eblliwsm.com/c7bd1a80/Extend/Mode/Thin/
Upload File :
Current File : /www/wwwroot/eblliwsm.com/c7bd1a80/Extend/Mode/Thin/Model.class.php

<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

/**
 * ThinkPHP 简洁模式Model模型类
 * 只支持原生SQL操作 支持多数据库连接和切换
 */
class Model {
    // 当前数据库操作对象
    protected $db = null;
    // 数据表前缀
    protected $tablePrefix  =   '';
    // 模型名称
    protected $name = '';
    // 数据库名称
    protected $dbName  = '';
    // 数据表名(不包含表前缀)
    protected $tableName = '';
    // 实际数据表名(包含表前缀)
    protected $trueTableName ='';
    // 最近错误信息
    protected $error = '';

    /**
     * 架构函数
     * 取得DB类的实例对象
     * @param string $name 模型名称
     * @access public
     */
    public function __construct($name='') {
        // 模型初始化
        $this->_initialize();
        // 获取模型名称
        if(!empty($name)) {
            $this->name   =  $name;
        }elseif(empty($this->name)){
            $this->name =   $this->getModelName();
        }
        // 数据库初始化操作
        // 获取数据库操作对象
        // 当前模型有独立的数据库连接信息
        $this->db(0,empty($this->connection)?$connection:$this->connection);
        // 设置表前缀
        $this->tablePrefix = $this->tablePrefix?$this->tablePrefix:C('DB_PREFIX');
    }

    // 回调方法 初始化模型
    protected function _initialize() {}

    /**
     * SQL查询
     * @access public
     * @param mixed $sql  SQL指令
     * @return array
     */
    public function query($sql) {
        if(is_array($sql)) {
            return $this->patchQuery($sql);
        }
        if(!empty($sql)) {
            if(strpos($sql,'__TABLE__')) {
                $sql    =   str_replace('__TABLE__',$this->getTableName(),$sql);
            }
            return $this->db->query($sql);
        }else{
            return false;
        }
    }

    /**
     * 执行SQL语句
     * @access public
     * @param string $sql  SQL指令
     * @return false | integer
     */
    public function execute($sql='') {
        if(!empty($sql)) {
            if(strpos($sql,'__TABLE__')) {
                $sql    =   str_replace('__TABLE__',$this->getTableName(),$sql);
            }
            $result =   $this->db->execute($sql);
            return $result;
        }else {
            return false;
        }
    }

    /**
     * 得到当前的数据对象名称
     * @access public
     * @return string
     */
    public function getModelName() {
        if(empty($this->name)) {
            $this->name =   substr(get_class($this),0,-5);
        }
        return $this->name;
    }

    /**
     * 得到完整的数据表名
     * @access public
     * @return string
     */
    public function getTableName() {
        if(empty($this->trueTableName)) {
            $tableName  = !empty($this->tablePrefix) ? $this->tablePrefix : '';
            if(!empty($this->tableName)) {
                $tableName .= $this->tableName;
            }else{
                $tableName .= parse_name($this->name);
            }
            $this->trueTableName    =   strtolower($tableName);
        }
        return (!empty($this->dbName)?$this->dbName.'.':'').$this->trueTableName;
    }

    /**
     * 启动事务
     * @access public
     * @return void
     */
    public function startTrans() {
        $this->commit();
        $this->db->startTrans();
        return ;
    }

    /**
     * 提交事务
     * @access public
     * @return boolean
     */
    public function commit() {
        return $this->db->commit();
    }

    /**
     * 事务回滚
     * @access public
     * @return boolean
     */
    public function rollback() {
        return $this->db->rollback();
    }

    /**
     * 切换当前的数据库连接
     * @access public
     * @param integer $linkNum  连接序号
     * @param mixed $config  数据库连接信息
     * @return Model
     */
    public function db($linkNum='',$config=''){
        if(''===$linkNum && $this->db) {
            return $this->db;
        }
        static $_linkNum    =   array();
        static $_db = array();
        if(!isset($_db[$linkNum]) || (isset($_db[$linkNum]) && $_linkNum[$linkNum]!=$config) ) {
            // 创建一个新的实例
            if(!empty($config) && is_string($config) && false === strpos($config,'/')) { // 支持读取配置参数
                $config  =  C($config);
            }
            $_db[$linkNum]            =    Db::getInstance($config);
        }elseif(NULL === $config){
            $_db[$linkNum]->close(); // 关闭数据库连接
            unset($_db[$linkNum]);
            return ;
        }
        // 记录连接信息
        $_linkNum[$linkNum] =   $config;
        // 切换数据库连接
        $this->db   =    $_db[$linkNum];
        return $this;
    }
}

GO Party By You