query_class.php
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<?php
/**
* Tiny - A PHP Framework For Web Artisans
* @author Tiny <tinylofty@gmail.com>
* @copyright Copyright(c) 2010-2014 http://www.tinyrise.com All rights reserved
* @version 1.0
*/
/**
* 查询类主要用于，viewAction中
*
* @author Tiny
* @class Query
*/
class Query
{
private $dbo;
public $cache = false;
public $cacheTime = 30;
private $paging;
private $tablePre='';
private $sql=array('table'=>'','fields'=>'*','where'=>'','join'=>'','group'=>'','having'=>'','order'=>'','limit'=>'limit 500','distinct'=>'');
/**
* 构造方法
*
* @access public
* @param mixed $name
* @return mixed
*/
public function __construct($name)
{
$dbinfo = DBFactory::getDbInfo();
$this->tablePre = $dbinfo['tablePre'];
$this->table = $name;
$this->dbo=DBFactory::getInstance();
}
/**
* 设置表
*
* @access public
* @param mixed $name
* @return mixed
*/
public function setTable($name)
{
if(strpos($name,',') === false)
{
$this->sql['table']= $this->tablePre.$name;
}
else
{
$tables = explode(',',$name);
foreach($tables as $key=>$value)
{
$tables[$key] = $this->tablePre.trim($value);
}
$this->sql['table'] = implode(',',$tables);
}
}
/**
* @brief 取得表前缀
* @return String 表前缀
*/
public function getTablePre()
{
return $this->tablePre;
}
/**
* @brief 实现属性的直接存
* @param string $name
* @param string $value
*/
private function setJoin($str)
{
//$this->sql['join']= preg_replace('/join\s+(\S+)\s+/i',"join {$this->tablePre}$1 ",$str);
$this->sql['join'] = preg_replace('/(\w+)(?=\s+as\s+\w+(,|\)|\s))/i',"tiny_$1 ",$str);
}
public function __set($name,$value)
{
switch($name)
{
case 'table':$this->setTable($value);break;
case 'fields':$this->sql['fields'] = $value;break;
case 'where':$this->sql['where'] = 'where '.$value;break;
case 'join':$this->setJoin($value);break;
case 'group':$this->sql['group'] = 'group by '.$value;break;
case 'having':$this->sql['having'] = 'having '.$value;break;
case 'order':$this->sql['order'] = 'order by '.$value;break;
case 'limit':$this->sql['limit'] = 'limit '.$value;break;
case 'page':$this->sql['page'] =intval($value); break;
case 'pagesize':$this->sql['pagesize'] =intval($value); break;
case 'pagelength':$this->sql['pagelength'] =intval($value); break;
case 'pagename':$this->sql['pagename'] =$value; break;
case 'distinct':
{
if($value)$this->sql['distinct'] = 'distinct ';
else $this->sql['distinct'] = '';
break;
}
}
}
/**
* @brief 实现属性的直接取
* @param mixed $name
* @return String
*/
public function __get($name)
{
if(isset($this->sql[$name]))return $this->sql[$name];
}
public function __isset($name)
{
if(isset($this->sql[$name]))return true;
}
/**
* @brief 取得查询结果
* @return array
*/
public function find()
{
if($this->page)
{
$sql="select $this->distinct $this->fields from $this->table $this->join $this->where $this->group $this->having $this->order";
$pageSql = "select count(*) as total from $this->table $this->join $this->where $this->group $this->having";
$pagesize = isset($this->pagesize)?intval($this->pagesize):10;
$pagelength = isset($this->pagelength)?intval($this->pagelength):5;
$pagename = isset($this->pagename)?$this->pagename:'p';
$items = $this->dbo->doSql($pageSql);
$total = 0;
if(is_array($items))$total = $items[0]['total'];
$plus = floor($pagelength/2);
$data = Array('total_nums'=>$total,'pagesize'=>$pagesize,'plus'=>$plus,'pagename'=>$pagename);
$this->paging = new Paging($data);
$first = $this->paging->getFirstRow();
$sql .= ' limit '.$first.','.$pagesize;
return $this->dbo->doSql($sql);
}else
{
$sql="select $this->distinct $this->fields from $this->table $this->join $this->where $this->group $this->having $this->order $this->limit";
$items = array();
if($this->cache)
{
$cache = CacheFactory::getInstance();
$items = $cache->get("$sql");
if($items===null)
{
$items = $this->dbo->doSql($sql);
$cache->set("$sql",$items,$this->cacheTime);
}
}
else
{
try
{
$items = $this->dbo->doSql($sql);
}catch(Exception $e)
{
throw $e;
}
}
return $items;
}
}
/**
* 取得分布bar
*
* @access public
* @return mixed
*/
public function pageBar($type=1)
{
return $this->paging->show($type);
}
/**
* 取得当前的分布类
*
* @access public
* @return mixed
*/
public function getPaging()
{
if(isset($this->paging)) return $this->paging;
else return null;
}
}
?>