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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
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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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205
Think/Db/Driver/Sqlsrv.php
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@@ -10,7 +10,7 @@
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
use Think\Db\Driver;
/**
* Sqlsrv数据库驱动
* @category Extend
@@ -18,180 +18,8 @@ use Think\Db;
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Sqlsrv extends Db{
class Sqlsrv extends Driver{
protected $selectSql = 'SELECT T1.* FROM (SELECT thinkphp.*, ROW_NUMBER() OVER (%ORDER%) AS ROW_NUMBER FROM (SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%) AS thinkphp) AS T1 %LIMIT%%COMMENT%';
/**
* 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 ( !function_exists('sqlsrv_connect') ) {
throw_exception(L('_NOT_SUPPERT_').':sqlsrv');
}
if(!empty($config)) {
$this->config = $config;
}
}
/**
* 连接数据库方法
* @access public
*/
public function connect($config='',$linkNum=0) {
if ( !isset($this->linkID[$linkNum]) ) {
if(empty($config)) $config = $this->config;
$host = $config['hostname'].($config['hostport']?",{$config['hostport']}":'');
$connectInfo = array('Database'=>$config['database'],'UID'=>$config['username'],'PWD'=>$config['password'],'CharacterSet' => C('DEFAULT_CHARSET'));
$this->linkID[$linkNum] = sqlsrv_connect( $host, $connectInfo);
if ( !$this->linkID[$linkNum] ) $this->error(false);
// 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() {
sqlsrv_free_stmt($this->queryID);
$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');
$this->queryID = sqlsrv_query($this->_linkID,$str,array(), array( "Scrollable" => SQLSRV_CURSOR_KEYSET));
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
$this->numRows = sqlsrv_num_rows($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');
$this->queryID= sqlsrv_query($this->_linkID,$str);
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
$this->numRows = sqlsrv_rows_affected($this->queryID);
$this->lastInsID = $this->mssql_insert_id();
return $this->numRows;
}
}
/**
* 用于获取最后插入的ID
* @access public
* @return integer
*/
public function mssql_insert_id() {
$query = "SELECT @@IDENTITY as last_insert_id";
$result = sqlsrv_query($this->_linkID,$query);
list($last_insert_id) = sqlsrv_fetch_array($result);
sqlsrv_free_stmt($result);
return $last_insert_id;
}
/**
* 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 ($this->transTimes == 0) {
sqlsrv_begin_transaction($this->_linkID);
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit() {
if ($this->transTimes > 0) {
$result = sqlsrv_commit($this->_linkID);
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 事务回滚
* @access public
* @return boolen
*/
public function rollback() {
if ($this->transTimes > 0) {
$result = sqlsrv_rollback($this->_linkID);
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
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) {
while($row = sqlsrv_fetch_array($this->queryID,SQLSRV_FETCH_ASSOC))
$result[] = $row;
}
return $result;
}
/**
* 取得数据表的字段信息
@@ -299,33 +127,4 @@ class Sqlsrv extends Db{
return $this->execute($sql);
}
/**
* 关闭数据库
* @access public
*/
public function close() {
if ($this->_linkID){
sqlsrv_close($this->_linkID);
}
$this->_linkID = null;
}
/**
* 数据库错误信息
* 并显示当前的SQL语句
* @access public
* @return string
*/
public function error($result = true) {
$errors = sqlsrv_errors();
$this->error = '';
foreach( $errors as $error ) {
$this->error .= $error['message'];
}
if('' != $this->queryStr){
$this->error .= "\n [ SQL语句 ] : ".$this->queryStr;
}
$result? ThinkLog::record($error['message'],'ERR'):throw_exception($this->error);
return $this->error;
}
}