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数据库中间层改为PDO

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增加Think\Db\Lite 用于操作原生SQL需求
This commit is contained in:
thinkphp
2013-03-17 18:56:15 +08:00
parent dec45af1aa
commit 647d47ccb4
13 changed files with 1440 additions and 4167 deletions
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202
Think/Db/Driver/Sqlite.php
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@@ -9,7 +9,7 @@
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
use Think\Db\Driver;
/**
* Sqlite数据库驱动
* @category Extend
@@ -17,177 +17,7 @@ use Think\Db;
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Sqlite extends Db {
/**
* 架构函数 读取数据库配置信息
* @access public
* @param array $config 数据库配置数组
*/
public function __construct($config='') {
if ( !extension_loaded('sqlite') ) {
throw_exception(L('_NOT_SUPPERT_').':sqlite');
}
if(!empty($config)) {
if(!isset($config['mode'])) {
$config['mode'] = 0666;
}
$this->config = $config;
if(empty($this->config['params'])) {
$this->config['params'] = array();
}
}
}
/**
* 连接数据库方法
* @access public
*/
public function connect($config='',$linkNum=0) {
if ( !isset($this->linkID[$linkNum]) ) {
if(empty($config)) $config = $this->config;
$pconnect = !empty($config['params']['persist'])? $config['params']['persist']:$this->pconnect;
$conn = $pconnect ? 'sqlite_popen':'sqlite_open';
$this->linkID[$linkNum] = $conn($config['database'],$config['mode']);
if ( !$this->linkID[$linkNum]) {
throw_exception(sqlite_error_string());
}
// 标记连接成功
$this->connected = true;
//注销数据库安全信息
if(1 != C('DB_DEPLOY_TYPE')) unset($this->config);
}
return $this->linkID[$linkNum];
}
/**
* 释放查询结果
* @access public
*/
public function free() {
$this->queryID = null;
}
/**
* 执行查询 返回数据集
* @access public
* @param string $str sql指令
* @return mixed
*/
public function query($str) {
$this->initConnect(false);
if ( !$this->_linkID ) return false;
$this->queryStr = $str;
//释放前次的查询结果
if ( $this->queryID ) $this->free();
N('db_query',1);
// 记录开始执行时间
G('queryStartTime');
$this->queryID = sqlite_query($this->_linkID,$str);
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
$this->numRows = sqlite_num_rows($this->queryID);
return $this->getAll();
}
}
/**
* 执行语句
* @access public
* @param string $str sql指令
* @return integer
*/
public function execute($str) {
$this->initConnect(true);
if ( !$this->_linkID ) return false;
$this->queryStr = $str;
//释放前次的查询结果
if ( $this->queryID ) $this->free();
N('db_write',1);
// 记录开始执行时间
G('queryStartTime');
$result = sqlite_exec($this->_linkID,$str);
$this->debug();
if ( false === $result ) {
$this->error();
return false;
} else {
$this->numRows = sqlite_changes($this->_linkID);
$this->lastInsID = sqlite_last_insert_rowid($this->_linkID);
return $this->numRows;
}
}
/**
* 启动事务
* @access public
* @return void
*/
public function startTrans() {
$this->initConnect(true);
if ( !$this->_linkID ) return false;
//数据rollback 支持
if ($this->transTimes == 0) {
sqlite_query($this->_linkID,'BEGIN TRANSACTION');
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit() {
if ($this->transTimes > 0) {
$result = sqlite_query($this->_linkID,'COMMIT TRANSACTION');
if(!$result){
$this->error();
return false;
}
$this->transTimes = 0;
}
return true;
}
/**
* 事务回滚
* @access public
* @return boolen
*/
public function rollback() {
if ($this->transTimes > 0) {
$result = sqlite_query($this->_linkID,'ROLLBACK TRANSACTION');
if(!$result){
$this->error();
return false;
}
$this->transTimes = 0;
}
return true;
}
/**
* 获得所有的查询数据
* @access private
* @return array
*/
private function getAll() {
//返回数据集
$result = array();
if($this->numRows >0) {
for($i=0;$i<$this->numRows ;$i++ ){
// 返回数组集
$result[$i] = sqlite_fetch_array($this->queryID,SQLITE_ASSOC);
}
sqlite_seek($this->queryID,0);
}
return $result;
}
class Sqlite extends Driver {
/**
* 取得数据表的字段信息
@@ -228,32 +58,6 @@ class Sqlite extends Db {
return $info;
}
/**
* 关闭数据库
* @access public
*/
public function close() {
if ($this->_linkID){
sqlite_close($this->_linkID);
}
$this->_linkID = null;
}
/**
* 数据库错误信息
* 并显示当前的SQL语句
* @access public
* @return string
*/
public function error() {
$this->error = sqlite_error_string(sqlite_last_error($this->_linkID));
if('' != $this->queryStr){
$this->error .= "\n [ SQL语句 ] : ".$this->queryStr;
}
ThinkLog::record($this->error,'ERR');
return $this->error;
}
/**
* SQL指令安全过滤
* @access public
@@ -261,7 +65,7 @@ class Sqlite extends Db {
* @return string
*/
public function escapeString($str) {
return sqlite_escape_string($str);
return str_ireplace("'", "''", $str);
}
/**