数据库中间层改为PDO

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

View File

@@ -19,861 +19,94 @@ namespace Think;
* @author liu21st <liu21st@gmail.com>
*/
class Db {
// 数据库类型
protected $dbType = null;
// 是否自动释放查询结果
protected $autoFree = false;
// 当前操作所属的模型名
protected $model = '_think_';
// 是否使用永久连接
protected $pconnect = false;
// 当前SQL指令
protected $queryStr = '';
protected $modelSql = [];
// 最后插入ID
protected $lastInsID = null;
// 返回或者影响记录数
protected $numRows = 0;
// 返回字段数
protected $numCols = 0;
// 事务指令数
protected $transTimes = 0;
// 错误信息
protected $error = '';
// 数据库连接ID 支持多个连接
protected $linkID = [];
// 当前连接ID
protected $_linkID = null;
// 当前查询ID
protected $queryID = null;
// 是否已经连接数据库
protected $connected = false;
// 数据库连接参数配置
protected $config = '';
// 数据库表达式
protected $comparison = ['eq'=>'=','neq'=>'<>','gt'=>'>','egt'=>'>=','lt'=>'<','elt'=>'<=','notlike'=>'NOT LIKE','like'=>'LIKE','in'=>'IN','notin'=>'NOT IN'];
// 查询表达式
protected $selectSql = 'SELECT%DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%%ORDER%%LIMIT% %UNION%%COMMENT%';
protected $conf = [];
static private $instance = [];
/**
* 取得数据库类实例
* @static
* @access public
* @return mixed 返回数据库驱动类
*/
public static function getInstance($config) {
static $_instance = [];
public static function getInstance($config=[]) {
$md5 = md5(serialize($config));
if(!isset(self::$instance[$md5])) {
$options = self::parseConfig($config);
$class = 'Think\\Db\\Driver\\'.ucwords($options['dbms']);
if(class_exists($class)) {
self::$instance[$md5] = new $class($options);
}else{
Error::halt('_DB_TYPE_INVALID_:'.$options['dbms']);
}
}
return self::$instance[$md5];
}
/**
* Lite版本数据库引擎 仅支持原生SQL 包括query和execute方法
* @static
* @access public
* @return mixed 返回数据库驱动类
*/
public static function lite($config=[]) {
static $_instance = [];
$md5 = md5(serialize($config));
if(!isset($_instance[$md5])) {
$Db = new Db();
$_instance[$md5] = $Db->factory($config);
$_instance[$md5] = new Think\Db\Lite(self::parseConfig($config));
}
return $_instance[$md5];
}
/**
* 加载数据库 支持配置文件或者 DSN
* @access public
* @param mixed $db_config 数据库配置信息
* @return string
*/
public function factory($db_config='') {
$this->conf = Config::get();
// 读取数据库配置
$db_config = $this->parseConfig($db_config);
if(empty($db_config['dbms']))
throw_exception(Lang::get('_NO_DB_CONFIG_'));
// 数据库类型
$db_type = strtolower($db_config['dbms']);
$class = '\Think\Db\Driver\\'. ucwords($db_type);
// 检查驱动类
if(class_exists($class)) {
$db = new $class($db_config);
// 获取当前的数据库类型
if( 'pdo' != $db_type )
$db->dbType = strtoupper($db_type);
else
$db->dbType = $this->_getDsnType($db_config['dsn']);
}else {
// 类没有定义
throw_exception(Lang::get('_NO_DB_DRIVER_').': ' . $class);
static public function parseConfig($config=[]){
if(empty($config)) {
$config = Config::get();
}
return $db;
}
/**
* 根据DSN获取数据库类型 返回大写
* @access protected
* @param string $dsn dsn字符串
* @return string
*/
protected function _getDsnType($dsn) {
$match = explode(':',$dsn);
$dbType = strtoupper(trim($match[0]));
return $dbType;
}
/**
* 分析数据库配置信息支持数组和DSN
* @access private
* @param mixed $db_config 数据库配置信息
* @return string
*/
private function parseConfig($db_config='') {
if ( !empty($db_config) && is_string($db_config)) {
// 如果DSN字符串则进行解析
$db_config = $this->parseDSN($db_config);
}elseif(is_array($db_config)) { // 数组配置
$db_config = array_change_key_case($db_config);
$db_config = [
'dbms' => $db_config['db_type'],
'username' => $db_config['db_user'],
'password' => $db_config['db_pwd'],
'hostname' => $db_config['db_host'],
'hostport' => $db_config['db_port'],
'database' => $db_config['db_name'],
'dsn' => $db_config['db_dsn'],
'params' => $db_config['db_params'],
];
}elseif(empty($db_config)) {
// 如果配置为空,读取配置文件设置
if( isset($this->conf['db_dsn']) && $this->conf['db_dsn'] && 'pdo' != strtolower($this->conf['db_type']) ) { // 如果设置了DB_DSN 则优先
$db_config = $this->parseDSN($this->conf['db_dsn']);
}else{
$db_config = array (
'dbms' => $this->conf['db_type'],
'username' => $this->conf['db_user'],
'password' => $this->conf['db_pwd'],
'hostname' => $this->conf['db_host'],
'hostport' => $this->conf['db_port'],
'database' => $this->conf['db_name'],
'dsn' => isset($this->conf['db_dsn'])?$this->conf['db_dsn']:'',
'params' => isset($this->conf['db_params'])?$this->conf['db_params']:'',
);
}
if(is_string($config)) {
return self::parseDsn($config);
}
return $db_config;
}
/**
* 初始化数据库连接
* @access protected
* @param boolean $master 主服务器
* @return void
*/
protected function initConnect($master=true) {
if(empty($this->conf)) {
$this->conf = Config::get();
}
if(1 == $this->conf['db_deploy_type'])
// 采用分布式数据库
$this->_linkID = $this->multiConnect($master);
else
// 默认单数据库
if ( !$this->connected ) $this->_linkID = $this->connect();
}
/**
* 连接分布式服务器
* @access protected
* @param boolean $master 主服务器
* @return void
*/
protected function multiConnect($master=false) {
static $_config = [];
if(empty($_config)) {
// 缓存分布式数据库配置解析
foreach ($this->config as $key=>$val){
$_config[$key] = explode(',',$val);
}
}
// 数据库读写是否分离
if($this->conf['db_rw_separate']){
// 主从式采用读写分离
if($master)
// 主服务器写入
$r = floor(mt_rand(0,$this->conf['db_master_num']-1));
else{
if(is_numeric($this->conf['db_slave_no'])) {// 指定服务器读
$r = $this->conf['db_slave_no'];
}else{
// 读操作连接从服务器
$r = floor(mt_rand($this->conf['db_master_num'],count($_config['hostname'])-1)); // 每次随机连接的数据库
}
}
}else{
// 读写操作不区分服务器
$r = floor(mt_rand(0,count($_config['hostname'])-1)); // 每次随机连接的数据库
}
$db_config = [
'username' => isset($_config['username'][$r])?$_config['username'][$r]:$_config['username'][0],
'password' => isset($_config['password'][$r])?$_config['password'][$r]:$_config['password'][0],
'hostname' => isset($_config['hostname'][$r])?$_config['hostname'][$r]:$_config['hostname'][0],
'hostport' => isset($_config['hostport'][$r])?$_config['hostport'][$r]:$_config['hostport'][0],
'database' => isset($_config['database'][$r])?$_config['database'][$r]:$_config['database'][0],
'dsn' => isset($_config['dsn'][$r])?$_config['dsn'][$r]:$_config['dsn'][0],
'params' => isset($_config['params'][$r])?$_config['params'][$r]:$_config['params'][0],
];
return $this->connect($db_config,$r);
return [
'dbms' => $config['db_type'],
'dsn' => $config['db_dsn'],
'username' => $config['db_user'],
'password' => $config['db_pwd'],
'hostname' => $config['db_host'],
'hostport' => $config['db_port'],
'database' => $config['db_name'],
'params' => $config['db_params'],
'charset' => $config['db_charset'],
'deploy' => $config['db_deploy'],
'socket' => $config['db_unix_socket'],
];
}
/**
* DSN解析
* 格式: mysql://username:passwd@localhost:3306/DbName
* 格式: mysql://username:passwd@localhost:3306/DbName?param1=val1&param2=val2#utf8
* @static
* @access public
* @param string $dsnStr
* @return array
*/
public function parseDSN($dsnStr) {
static public function parseDsn($dsnStr) {
if( empty($dsnStr) ){return false;}
$info = parse_url($dsnStr);
if($info['scheme']){
$dsn = [
if(!$info) {
return false;
}
$dsn = [
'dbms' => $info['scheme'],
'username' => isset($info['user']) ? $info['user'] : '',
'password' => isset($info['pass']) ? $info['pass'] : '',
'hostname' => isset($info['host']) ? $info['host'] : '',
'hostport' => isset($info['port']) ? $info['port'] : '',
'database' => isset($info['path']) ? substr($info['path'],1) : ''
];
}else {
preg_match('/^(.*?)\:\/\/(.*?)\:(.*?)\@(.*?)\:([0-9]{1, 6})\/(.*?)$/',trim($dsnStr),$matches);
$dsn = [
'dbms' => $matches[1],
'username' => $matches[2],
'password' => $matches[3],
'hostname' => $matches[4],
'hostport' => $matches[5],
'database' => $matches[6]
];
}
'database' => isset($info['path']) ? substr($info['path'],1) : '',
'charset' => isset($info['fragment'])?$info['fragment']:'',
];
$dsn['dsn'] = ''; // 兼容配置信息数组
if(isset($info['query'])) {
parse_str($info['query'],$dsn['params']);
}else{
$dsn['params'] = [];
}
return $dsn;
}
/**
* 数据库调试 记录当前SQL
* @access protected
*/
protected function debug() {
$this->modelSql[$this->model] = $this->queryStr;
$this->model = '_think_';
// 记录操作结束时间
Debug::remark('queryEndTime','time');
Log::record($this->queryStr.' [ RunTime:'.Debug::getUseTime('queryStartTime','queryEndTime').'s ]','SQL');
}
/**
* 设置锁机制
* @access protected
* @return string
*/
protected function parseLock($lock=false) {
if(!$lock) return '';
if('ORACLE' == $this->dbType) {
return ' FOR UPDATE NOWAIT ';
}
return ' FOR UPDATE ';
}
/**
* set分析
* @access protected
* @param array $data
* @return string
*/
protected function parseSet($data) {
foreach ($data as $key=>$val){
$value = $this->parseValue($val);
if(is_scalar($value)) // 过滤非标量数据
$set[] = $this->parseKey($key).'='.$value;
}
return ' SET '.implode(',',$set);
}
/**
* 字段名分析
* @access protected
* @param string $key
* @return string
*/
protected function parseKey(&$key) {
return $key;
}
/**
* value分析
* @access protected
* @param mixed $value
* @return string
*/
protected function parseValue($value) {
if(is_string($value)) {
$value = '\''.$this->escapeString($value).'\'';
}elseif(isset($value[0]) && is_string($value[0]) && strtolower($value[0]) == 'exp'){
$value = $this->escapeString($value[1]);
}elseif(is_array($value)) {
$value = array_map(array($this, 'parseValue'),$value);
}elseif(is_bool($value)){
$value = $value ? '1' : '0';
}elseif(is_null($value)){
$value = 'null';
}
return $value;
}
/**
* field分析
* @access protected
* @param mixed $fields
* @return string
*/
protected function parseField($fields) {
if(is_string($fields) && strpos($fields,',')) {
$fields = explode(',',$fields);
}
if(is_array($fields)) {
// 完善数组方式传字段名的支持
// 支持 'field1'=>'field2' 这样的字段别名定义
$array = [];
foreach ($fields as $key=>$field){
if(!is_numeric($key))
$array[] = $this->parseKey($key).' AS '.$this->parseKey($field);
else
$array[] = $this->parseKey($field);
}
$fieldsStr = implode(',', $array);
}elseif(is_string($fields) && !empty($fields)) {
$fieldsStr = $this->parseKey($fields);
}else{
$fieldsStr = '*';
}
//TODO 如果是查询全部字段并且是join的方式那么就把要查的表加个别名以免字段被覆盖
return $fieldsStr;
}
/**
* table分析
* @access protected
* @param mixed $table
* @return string
*/
protected function parseTable($tables) {
if(is_array($tables)) {// 支持别名定义
$array = [];
foreach ($tables as $table=>$alias){
if(!is_numeric($table))
$array[] = $this->parseKey($table).' '.$this->parseKey($alias);
else
$array[] = $this->parseKey($table);
}
$tables = $array;
}elseif(is_string($tables)){
$tables = explode(',',$tables);
array_walk($tables, array(&$this, 'parseKey'));
}
return implode(',',$tables);
}
/**
* where分析
* @access protected
* @param mixed $where
* @return string
*/
protected function parseWhere($where) {
$whereStr = '';
if(is_string($where)) {
// 直接使用字符串条件
$whereStr = $where;
}else{ // 使用数组表达式
$operate = isset($where['_logic'])?strtoupper($where['_logic']):'';
if(in_array($operate,['AND','OR','XOR'])){
// 定义逻辑运算规则 例如 OR XOR AND NOT
$operate = ' '.$operate.' ';
unset($where['_logic']);
}else{
// 默认进行 AND 运算
$operate = ' AND ';
}
foreach ($where as $key=>$val){
$whereStr .= '( ';
if(0===strpos($key,'_')) {
// 解析特殊条件表达式
$whereStr .= $this->parseThinkWhere($key,$val);
}else{
// 查询字段的安全过滤
if(!preg_match('/^[A-Z_\|\&\-.a-z0-9\(\)\,]+$/',trim($key))){
throw_exception(L('_EXPRESS_ERROR_').':'.$key);
}
// 多条件支持
$multi = is_array($val) && isset($val['_multi']);
$key = trim($key);
if(strpos($key,'|')) { // 支持 name|title|nickname 方式定义查询字段
$array = explode('|',$key);
$str = [];
foreach ($array as $m=>$k){
$v = $multi?$val[$m]:$val;
$str[] = '('.$this->parseWhereItem($this->parseKey($k),$v).')';
}
$whereStr .= implode(' OR ',$str);
}elseif(strpos($key,'&')){
$array = explode('&',$key);
$str = [];
foreach ($array as $m=>$k){
$v = $multi?$val[$m]:$val;
$str[] = '('.$this->parseWhereItem($this->parseKey($k),$v).')';
}
$whereStr .= implode(' AND ',$str);
}else{
$whereStr .= $this->parseWhereItem($this->parseKey($key),$val);
}
}
$whereStr .= ' )'.$operate;
}
$whereStr = substr($whereStr,0,-strlen($operate));
}
return empty($whereStr)?'':' WHERE '.$whereStr;
}
// where子单元分析
protected function parseWhereItem($key,$val) {
$whereStr = '';
if(is_array($val)) {
if(is_string($val[0])) {
if(preg_match('/^(EQ|NEQ|GT|EGT|LT|ELT)$/i',$val[0])) { // 比较运算
$whereStr .= $key.' '.$this->comparison[strtolower($val[0])].' '.$this->parseValue($val[1]);
}elseif(preg_match('/^(NOTLIKE|LIKE)$/i',$val[0])){// 模糊查找
if(is_array($val[1])) {
$likeLogic = isset($val[2])?strtoupper($val[2]):'OR';
if(in_array($likeLogic,['AND','OR','XOR'])){
$likeStr = $this->comparison[strtolower($val[0])];
$like = [];
foreach ($val[1] as $item){
$like[] = $key.' '.$likeStr.' '.$this->parseValue($item);
}
$whereStr .= '('.implode(' '.$likeLogic.' ',$like).')';
}
}else{
$whereStr .= $key.' '.$this->comparison[strtolower($val[0])].' '.$this->parseValue($val[1]);
}
}elseif('exp'==strtolower($val[0])){ // 使用表达式
$whereStr .= ' ('.$key.' '.$val[1].') ';
}elseif(preg_match('/IN/i',$val[0])){ // IN 运算
if(isset($val[2]) && 'exp'==$val[2]) {
$whereStr .= $key.' '.strtoupper($val[0]).' '.$val[1];
}else{
if(is_string($val[1])) {
$val[1] = explode(',',$val[1]);
}
$zone = implode(',',$this->parseValue($val[1]));
$whereStr .= $key.' '.strtoupper($val[0]).' ('.$zone.')';
}
}elseif(preg_match('/BETWEEN/i',$val[0])){ // BETWEEN运算
$data = is_string($val[1])? explode(',',$val[1]):$val[1];
$whereStr .= ' ('.$key.' '.strtoupper($val[0]).' '.$this->parseValue($data[0]).' AND '.$this->parseValue($data[1]).' )';
}else{
throw_exception(L('_EXPRESS_ERROR_').':'.$val[0]);
}
}else {
$count = count($val);
$rule = isset($val[$count-1])?strtoupper($val[$count-1]):'';
if(in_array($rule,['AND','OR','XOR'])) {
$count = $count -1;
}else{
$rule = 'AND';
}
for($i=0;$i<$count;$i++) {
$data = is_array($val[$i])?$val[$i][1]:$val[$i];
if('exp'==strtolower($val[$i][0])) {
$whereStr .= '('.$key.' '.$data.') '.$rule.' ';
}else{
$op = is_array($val[$i])?$this->comparison[strtolower($val[$i][0])]:'=';
$whereStr .= '('.$key.' '.$op.' '.$this->parseValue($data).') '.$rule.' ';
}
}
$whereStr = substr($whereStr,0,-4);
}
}else {
//对字符串类型字段采用模糊匹配
if($this->conf['db_like_fields'] && preg_match('/('.$this->conf['db_like_fields'].')/i',$key)) {
$val = '%'.$val.'%';
$whereStr .= $key.' LIKE '.$this->parseValue($val);
}else {
$whereStr .= $key.' = '.$this->parseValue($val);
}
}
return $whereStr;
}
/**
* 特殊条件分析
* @access protected
* @param string $key
* @param mixed $val
* @return string
*/
protected function parseThinkWhere($key,$val) {
$whereStr = '';
switch($key) {
case '_string':
// 字符串模式查询条件
$whereStr = $val;
break;
case '_complex':
// 复合查询条件
$whereStr = substr($this->parseWhere($val),6);
break;
case '_query':
// 字符串模式查询条件
parse_str($val,$where);
if(isset($where['_logic'])) {
$op = ' '.strtoupper($where['_logic']).' ';
unset($where['_logic']);
}else{
$op = ' AND ';
}
$array = [];
foreach ($where as $field=>$data)
$array[] = $this->parseKey($field).' = '.$this->parseValue($data);
$whereStr = implode($op,$array);
break;
}
return $whereStr;
}
/**
* limit分析
* @access protected
* @param mixed $lmit
* @return string
*/
protected function parseLimit($limit) {
return !empty($limit)? ' LIMIT '.$limit.' ':'';
}
/**
* join分析
* @access protected
* @param mixed $join
* @return string
*/
protected function parseJoin($join) {
$joinStr = '';
if(!empty($join)) {
if(is_array($join)) {
foreach ($join as $key=>$_join){
if(false !== stripos($_join,'JOIN'))
$joinStr .= ' '.$_join;
else
$joinStr .= ' LEFT JOIN ' .$_join;
}
}else{
$joinStr .= ' LEFT JOIN ' .$join;
}
}
//将__TABLE_NAME__这样的字符串替换成正规的表名,并且带上前缀和后缀
$joinStr = preg_replace("/__([A-Z_-]+)__/esU",Config::get('db_prefix').".strtolower('$1')",$joinStr);
return $joinStr;
}
/**
* order分析
* @access protected
* @param mixed $order
* @return string
*/
protected function parseOrder($order) {
if(is_array($order)) {
$array = [];
foreach ($order as $key=>$val){
if(is_numeric($key)) {
$array[] = $this->parseKey($val);
}else{
$array[] = $this->parseKey($key).' '.$val;
}
}
$order = implode(',',$array);
}
return !empty($order)? ' ORDER BY '.$order:'';
}
/**
* group分析
* @access protected
* @param mixed $group
* @return string
*/
protected function parseGroup($group) {
return !empty($group)? ' GROUP BY '.$group:'';
}
/**
* having分析
* @access protected
* @param string $having
* @return string
*/
protected function parseHaving($having) {
return !empty($having)? ' HAVING '.$having:'';
}
/**
* comment分析
* @access protected
* @param string $comment
* @return string
*/
protected function parseComment($comment) {
return !empty($comment)? ' /* '.$comment.' */':'';
}
/**
* distinct分析
* @access protected
* @param mixed $distinct
* @return string
*/
protected function parseDistinct($distinct) {
return !empty($distinct)? ' DISTINCT ' :'';
}
/**
* union分析
* @access protected
* @param mixed $union
* @return string
*/
protected function parseUnion($union) {
if(empty($union)) return '';
if(isset($union['_all'])) {
$str = 'UNION ALL ';
unset($union['_all']);
}else{
$str = 'UNION ';
}
foreach ($union as $u){
$sql[] = $str.(is_array($u)?$this->buildSelectSql($u):$u);
}
return implode(' ',$sql);
}
/**
* 插入记录
* @access public
* @param mixed $data 数据
* @param array $options 参数表达式
* @param boolean $replace 是否replace
* @return false | integer
*/
public function insert($data,$options=[],$replace=false) {
$values = $fields = [];
$this->model = $options['model'];
foreach ($data as $key=>$val){
$value = $this->parseValue($val);
if(is_scalar($value)) { // 过滤非标量数据
$values[] = $value;
$fields[] = $this->parseKey($key);
}
}
$sql = ($replace?'REPLACE':'INSERT').' INTO '.$this->parseTable($options['table']).' ('.implode(',', $fields).') VALUES ('.implode(',', $values).')';
$sql .= $this->parseLock(isset($options['lock'])?$options['lock']:false);
$sql .= $this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql);
}
/**
* 通过Select方式插入记录
* @access public
* @param string $fields 要插入的数据表字段名
* @param string $table 要插入的数据表名
* @param array $option 查询数据参数
* @return false | integer
*/
public function selectInsert($fields,$table,$options=[]) {
$this->model = $options['model'];
if(is_string($fields)) $fields = explode(',',$fields);
array_walk($fields, [$this, 'parseKey']);
$sql = 'INSERT INTO '.$this->parseTable($table).' ('.implode(',', $fields).') ';
$sql .= $this->buildSelectSql($options);
return $this->execute($sql);
}
/**
* 更新记录
* @access public
* @param mixed $data 数据
* @param array $options 表达式
* @return false | integer
*/
public function update($data,$options) {
$this->model = $options['model'];
$sql = 'UPDATE '
.$this->parseTable($options['table'])
.$this->parseSet($data)
.$this->parseWhere(!empty($options['where'])?$options['where']:'')
.$this->parseOrder(!empty($options['order'])?$options['order']:'')
.$this->parseLimit(!empty($options['limit'])?$options['limit']:'')
.$this->parseLock(isset($options['lock'])?$options['lock']:false)
.$this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql);
}
/**
* 删除记录
* @access public
* @param array $options 表达式
* @return false | integer
*/
public function delete($options=[]) {
$this->model = $options['model'];
$sql = 'DELETE FROM '
.$this->parseTable($options['table'])
.$this->parseWhere(!empty($options['where'])?$options['where']:'')
.$this->parseOrder(!empty($options['order'])?$options['order']:'')
.$this->parseLimit(!empty($options['limit'])?$options['limit']:'')
.$this->parseLock(isset($options['lock'])?$options['lock']:false)
.$this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql);
}
/**
* 查找记录
* @access public
* @param array $options 表达式
* @return mixed
*/
public function select($options=[]) {
$this->model = $options['model'];
$sql = $this->buildSelectSql($options);
$cache = isset($options['cache'])?$options['cache']:false;
if($cache) { // 查询缓存检测
$key = is_string($cache['key'])?$cache['key']:md5($sql);
$value = S($key,'',$cache);
if(false !== $value) {
return $value;
}
}
$result = $this->query($sql);
if($cache && false !== $result ) { // 查询缓存写入
S($key,$result,$cache);
}
return $result;
}
/**
* 生成查询SQL
* @access public
* @param array $options 表达式
* @return string
*/
public function buildSelectSql($options=[]) {
if(isset($options['page'])) {
// 根据页数计算limit
if(strpos($options['page'],',')) {
list($page,$listRows) = explode(',',$options['page']);
}else{
$page = $options['page'];
}
$page = $page?$page:1;
$listRows= isset($listRows)?$listRows:(is_numeric($options['limit'])?$options['limit']:20);
$offset = $listRows*((int)$page-1);
$options['limit'] = $offset.','.$listRows;
}
$sql = $this->parseSql($this->selectSql,$options);
$sql .= $this->parseLock(isset($options['lock'])?$options['lock']:false);
return $sql;
}
/**
* 替换SQL语句中表达式
* @access public
* @param array $options 表达式
* @return string
*/
public function parseSql($sql,$options=[]){
$sql = str_replace(
['%TABLE%','%DISTINCT%','%FIELD%','%JOIN%','%WHERE%','%GROUP%','%HAVING%','%ORDER%','%LIMIT%','%UNION%','%COMMENT%'],
[
$this->parseTable($options['table']),
$this->parseDistinct(isset($options['distinct'])?$options['distinct']:false),
$this->parseField(!empty($options['field'])?$options['field']:'*'),
$this->parseJoin(!empty($options['join'])?$options['join']:''),
$this->parseWhere(!empty($options['where'])?$options['where']:''),
$this->parseGroup(!empty($options['group'])?$options['group']:''),
$this->parseHaving(!empty($options['having'])?$options['having']:''),
$this->parseOrder(!empty($options['order'])?$options['order']:''),
$this->parseLimit(!empty($options['limit'])?$options['limit']:''),
$this->parseUnion(!empty($options['union'])?$options['union']:''),
$this->parseComment(!empty($options['comment'])?$options['comment']:'')
],$sql);
return $sql;
}
/**
* 获取最近一次查询的sql语句
* @param string $model 模型名
* @access public
* @return string
*/
public function getLastSql($model='') {
return $model?$this->modelSql[$model]:$this->queryStr;
}
/**
* 获取最近插入的ID
* @access public
* @return string
*/
public function getLastInsID() {
return $this->lastInsID;
}
/**
* 获取最近的错误信息
* @access public
* @return string
*/
public function getError() {
return $this->error;
}
/**
* SQL指令安全过滤
* @access public
* @param string $str SQL字符串
* @return string
*/
public function escapeString($str) {
return addslashes($str);
}
/**
* 设置当前操作模型
* @access public
* @param string $model 模型名
* @return void
*/
public function setModel($model){
$this->model = $model;
}
/**
* 析构方法
* @access public
*/
public function __destruct() {
// 释放查询
if ($this->queryID){
$this->free();
}
// 关闭连接
$this->close();
}
// 关闭数据库 由驱动类定义
public function close(){}
}

943
Think/Db/Driver.php Normal file
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<?php
// +----------------------------------------------------------------------
// | TOPThink [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2011 http://topthink.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id$
namespace Think\Db;
use Think\Config;
use Think\Debug;
use Think\Log;
use PDO;
class Driver {
// PDO操作实例
protected $PDOStatement = null;
// 当前操作所属的模型名
protected $model = '_think_';
// 当前SQL指令
protected $queryStr = '';
protected $modelSql = [];
// 最后插入ID
protected $lastInsID = null;
// 返回或者影响记录数
protected $numRows = 0;
// 返回字段数
protected $numCols = 0;
// 事务指令数
protected $transTimes = 0;
// 错误信息
protected $error = '';
// 数据库连接ID 支持多个连接
protected $linkID = [];
// 当前连接ID
protected $_linkID = null;
// 当前查询ID
protected $queryID = null;
// 数据库连接参数配置
protected $config = [];
// 数据库表达式
protected $comparison = ['eq'=>'=','neq'=>'<>','gt'=>'>','egt'=>'>=','lt'=>'<','elt'=>'<=','notlike'=>'NOT LIKE','like'=>'LIKE','in'=>'IN','notin'=>'NOT IN'];
// 查询表达式
protected $selectSql = 'SELECT%DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%%ORDER%%LIMIT% %UNION%%COMMENT%';
protected $queryTimes = 0;
protected $executeTimes = 0;
// PDO连接参数
protected $options = [
PDO::ATTR_CASE => PDO::CASE_LOWER,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
PDO::ATTR_STRINGIFY_FETCHES => false,
];
/**
* 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(!empty($config)) {
$this->config = $config;
if(empty($this->config['params'])) {
$this->config['params'] = [];
}
$this->config['params'] = $this->options+$this->config['params'];
}
}
/**
* 连接数据库方法
* @access public
*/
public function connect($config='',$linkNum=0) {
if ( !isset($this->linkID[$linkNum]) ) {
if(empty($config)) $config = $this->config;
try{
if(empty($config['dsn'])) {
$config['dsn'] = $config['dbms'].':dbname='.$config['database'].';host='.$config['hostname'];
if(!empty($config['hostport'])) {
$config['dsn'] .= ';port='.$config['hostport'];
}elseif(!empty($config['socket'])){
$config['dsn'] .= ';unix_socket='.$config['socket'];
}
}
$this->linkID[$linkNum] = new PDO( $config['dsn'], $config['username'], $config['password'],$config['params']);
}catch (\PDOException $e) {
throw_exception($e->getMessage());
}
if(!empty($config['charset'])) {
$this->linkID[$linkNum]->exec('SET NAMES '.$config['charset']);
}
// 注销数据库连接配置信息
if(1 != $config['deploy']) $this->config = [];
}
return $this->linkID[$linkNum];
}
/**
* 释放查询结果
* @access public
*/
public function free() {
$this->PDOStatement = null;
}
/**
* 执行查询 返回数据集
* @access public
* @param string $str sql指令
* @return mixed
*/
public function query($str,$bind=[]) {
$this->initConnect(false);
if ( !$this->_linkID ) return false;
$this->queryStr = $str;
//释放前次的查询结果
if ( !empty($this->PDOStatement) ) $this->free();
$this->queryTimes++;
// 记录开始执行时间
Debug::remark('queryStartTime','time');
$this->PDOStatement = $this->_linkID->prepare($str);
if(false === $this->PDOStatement)
throw_exception($this->error());
$result = $this->PDOStatement->execute($bind);
$this->debug();
if ( false === $result ) {
$this->error();
return false;
} else {
return $this->getResult();
}
}
/**
* 执行语句
* @access public
* @param string $str sql指令
* @return integer
*/
public function execute($str,$bind=[]) {
$this->initConnect(true);
if ( !$this->_linkID ) return false;
$this->queryStr = $str;
//释放前次的查询结果
if ( !empty($this->PDOStatement) ) $this->free();
$this->executeTimes++;
// 记录开始执行时间
Debug::remark('queryStartTime','time');
$this->PDOStatement = $this->_linkID->prepare($str);
if(false === $this->PDOStatement) {
throw_exception($this->error());
}
$result = $this->PDOStatement->execute($bind);
$this->debug();
if ( false === $result) {
$this->error();
return false;
} else {
$this->numRows = $this->PDOStatement->rowCount();
if(preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
$this->lastInsID = $this->getLastInsertId();
}
return $this->numRows;
}
}
/**
* 获取最后插入id
* @access public
* @return integer
*/
public function getLastInsertId() {
return $this->_linkID->lastInsertId();
}
/**
* 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) {
$this->_linkID->beginTransaction();
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit() {
if ($this->transTimes > 0) {
$result = $this->_linkID->commit();
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 事务回滚
* @access public
* @return boolen
*/
public function rollback() {
if ($this->transTimes > 0) {
$result = $this->_linkID->rollback();
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 获得所有的查询数据
* @access private
* @return array
*/
private function getResult() {
//返回数据集
$result = $this->PDOStatement->fetchAll(PDO::FETCH_ASSOC);
$this->numRows = count( $result );
return $result;
}
/**
* 关闭数据库
* @access public
*/
public function close() {
$this->_linkID = null;
}
/**
* 数据库错误信息
* 并显示当前的SQL语句
* @access public
* @return string
*/
public function error() {
if($this->PDOStatement) {
$error = $this->PDOStatement->errorInfo();
$this->error = $error[2];
}else{
$this->error = '';
}
if('' != $this->queryStr){
$this->error .= "\n [ SQL语句 ] : ".$this->queryStr;
}
Log::record($this->error,'ERR');
return $this->error;
}
/**
* 设置锁机制
* @access protected
* @return string
*/
protected function parseLock($lock=false) {
return $lock? ' FOR UPDATE ' : '';
}
/**
* set分析
* @access protected
* @param array $data
* @return string
*/
protected function parseSet($data) {
foreach ($data as $key=>$val){
$value = $this->parseValue($val);
if(is_scalar($value)) // 过滤非标量数据
$set[] = $this->parseKey($key).'='.$value;
}
return ' SET '.implode(',',$set);
}
/**
* 字段名分析
* @access protected
* @param string $key
* @return string
*/
protected function parseKey(&$key) {
return $key;
}
/**
* value分析
* @access protected
* @param mixed $value
* @return string
*/
protected function parseValue($value) {
if(is_string($value)) {
$value = '\''.$this->escapeString($value).'\'';
}elseif(isset($value[0]) && is_string($value[0]) && strtolower($value[0]) == 'exp'){
$value = $this->escapeString($value[1]);
}elseif(is_array($value)) {
$value = array_map([$this, 'parseValue'],$value);
}elseif(is_bool($value)){
$value = $value ? '1' : '0';
}elseif(is_null($value)){
$value = 'null';
}
return $value;
}
/**
* field分析
* @access protected
* @param mixed $fields
* @return string
*/
protected function parseField($fields) {
if(is_string($fields) && strpos($fields,',')) {
$fields = explode(',',$fields);
}
if(is_array($fields)) {
// 完善数组方式传字段名的支持
// 支持 'field1'=>'field2' 这样的字段别名定义
$array = [];
foreach ($fields as $key=>$field){
if(!is_numeric($key))
$array[] = $this->parseKey($key).' AS '.$this->parseKey($field);
else
$array[] = $this->parseKey($field);
}
$fieldsStr = implode(',', $array);
}elseif(is_string($fields) && !empty($fields)) {
$fieldsStr = $this->parseKey($fields);
}else{
$fieldsStr = '*';
}
//TODO 如果是查询全部字段并且是join的方式那么就把要查的表加个别名以免字段被覆盖
return $fieldsStr;
}
/**
* table分析
* @access protected
* @param mixed $table
* @return string
*/
protected function parseTable($tables) {
if(is_array($tables)) {// 支持别名定义
$array = [];
foreach ($tables as $table=>$alias){
if(!is_numeric($table))
$array[] = $this->parseKey($table).' '.$this->parseKey($alias);
else
$array[] = $this->parseKey($table);
}
$tables = $array;
}elseif(is_string($tables)){
$tables = explode(',',$tables);
array_walk($tables, [&$this, 'parseKey']);
}
return implode(',',$tables);
}
/**
* where分析
* @access protected
* @param mixed $where
* @return string
*/
protected function parseWhere($where) {
$whereStr = '';
if(is_string($where)) {
// 直接使用字符串条件
$whereStr = $where;
}else{ // 使用数组表达式
$operate = isset($where['_logic'])?strtoupper($where['_logic']):'';
if(in_array($operate,['AND','OR','XOR'])){
// 定义逻辑运算规则 例如 OR XOR AND NOT
$operate = ' '.$operate.' ';
unset($where['_logic']);
}else{
// 默认进行 AND 运算
$operate = ' AND ';
}
foreach ($where as $key=>$val){
$whereStr .= '( ';
if(0===strpos($key,'_')) {
// 解析特殊条件表达式
$whereStr .= $this->parseThinkWhere($key,$val);
}else{
// 查询字段的安全过滤
if(!preg_match('/^[A-Z_\|\&\-.a-z0-9\(\)\,]+$/',trim($key))){
throw_exception(L('_EXPRESS_ERROR_').':'.$key);
}
// 多条件支持
$multi = is_array($val) && isset($val['_multi']);
$key = trim($key);
if(strpos($key,'|')) { // 支持 name|title|nickname 方式定义查询字段
$array = explode('|',$key);
$str = [];
foreach ($array as $m=>$k){
$v = $multi?$val[$m]:$val;
$str[] = '('.$this->parseWhereItem($this->parseKey($k),$v).')';
}
$whereStr .= implode(' OR ',$str);
}elseif(strpos($key,'&')){
$array = explode('&',$key);
$str = [];
foreach ($array as $m=>$k){
$v = $multi?$val[$m]:$val;
$str[] = '('.$this->parseWhereItem($this->parseKey($k),$v).')';
}
$whereStr .= implode(' AND ',$str);
}else{
$whereStr .= $this->parseWhereItem($this->parseKey($key),$val);
}
}
$whereStr .= ' )'.$operate;
}
$whereStr = substr($whereStr,0,-strlen($operate));
}
return empty($whereStr)?'':' WHERE '.$whereStr;
}
// where子单元分析
protected function parseWhereItem($key,$val) {
$whereStr = '';
if(is_array($val)) {
if(is_string($val[0])) {
if(preg_match('/^(EQ|NEQ|GT|EGT|LT|ELT)$/i',$val[0])) { // 比较运算
$whereStr .= $key.' '.$this->comparison[strtolower($val[0])].' '.$this->parseValue($val[1]);
}elseif(preg_match('/^(NOTLIKE|LIKE)$/i',$val[0])){// 模糊查找
if(is_array($val[1])) {
$likeLogic = isset($val[2])?strtoupper($val[2]):'OR';
if(in_array($likeLogic,['AND','OR','XOR'])){
$likeStr = $this->comparison[strtolower($val[0])];
$like = [];
foreach ($val[1] as $item){
$like[] = $key.' '.$likeStr.' '.$this->parseValue($item);
}
$whereStr .= '('.implode(' '.$likeLogic.' ',$like).')';
}
}else{
$whereStr .= $key.' '.$this->comparison[strtolower($val[0])].' '.$this->parseValue($val[1]);
}
}elseif('exp'==strtolower($val[0])){ // 使用表达式
$whereStr .= ' ('.$key.' '.$val[1].') ';
}elseif(preg_match('/IN/i',$val[0])){ // IN 运算
if(isset($val[2]) && 'exp'==$val[2]) {
$whereStr .= $key.' '.strtoupper($val[0]).' '.$val[1];
}else{
if(is_string($val[1])) {
$val[1] = explode(',',$val[1]);
}
$zone = implode(',',$this->parseValue($val[1]));
$whereStr .= $key.' '.strtoupper($val[0]).' ('.$zone.')';
}
}elseif(preg_match('/BETWEEN/i',$val[0])){ // BETWEEN运算
$data = is_string($val[1])? explode(',',$val[1]):$val[1];
$whereStr .= ' ('.$key.' '.strtoupper($val[0]).' '.$this->parseValue($data[0]).' AND '.$this->parseValue($data[1]).' )';
}else{
throw_exception(L('_EXPRESS_ERROR_').':'.$val[0]);
}
}else {
$count = count($val);
$rule = isset($val[$count-1])?strtoupper($val[$count-1]):'';
if(in_array($rule,['AND','OR','XOR'])) {
$count = $count -1;
}else{
$rule = 'AND';
}
for($i=0;$i<$count;$i++) {
$data = is_array($val[$i])?$val[$i][1]:$val[$i];
if('exp'==strtolower($val[$i][0])) {
$whereStr .= '('.$key.' '.$data.') '.$rule.' ';
}else{
$op = is_array($val[$i])?$this->comparison[strtolower($val[$i][0])]:'=';
$whereStr .= '('.$key.' '.$op.' '.$this->parseValue($data).') '.$rule.' ';
}
}
$whereStr = substr($whereStr,0,-4);
}
}else {
//对字符串类型字段采用模糊匹配
if($this->conf['db_like_fields'] && preg_match('/('.$this->conf['db_like_fields'].')/i',$key)) {
$val = '%'.$val.'%';
$whereStr .= $key.' LIKE '.$this->parseValue($val);
}else {
$whereStr .= $key.' = '.$this->parseValue($val);
}
}
return $whereStr;
}
/**
* 特殊条件分析
* @access protected
* @param string $key
* @param mixed $val
* @return string
*/
protected function parseThinkWhere($key,$val) {
$whereStr = '';
switch($key) {
case '_string':
// 字符串模式查询条件
$whereStr = $val;
break;
case '_complex':
// 复合查询条件
$whereStr = substr($this->parseWhere($val),6);
break;
case '_query':
// 字符串模式查询条件
parse_str($val,$where);
if(isset($where['_logic'])) {
$op = ' '.strtoupper($where['_logic']).' ';
unset($where['_logic']);
}else{
$op = ' AND ';
}
$array = [];
foreach ($where as $field=>$data)
$array[] = $this->parseKey($field).' = '.$this->parseValue($data);
$whereStr = implode($op,$array);
break;
}
return $whereStr;
}
/**
* limit分析
* @access protected
* @param mixed $lmit
* @return string
*/
protected function parseLimit($limit) {
return !empty($limit)? ' LIMIT '.$limit.' ':'';
}
/**
* join分析
* @access protected
* @param mixed $join
* @return string
*/
protected function parseJoin($join) {
$joinStr = '';
if(!empty($join)) {
if(is_array($join)) {
foreach ($join as $key=>$_join){
if(false !== stripos($_join,'JOIN'))
$joinStr .= ' '.$_join;
else
$joinStr .= ' LEFT JOIN ' .$_join;
}
}else{
$joinStr .= ' LEFT JOIN ' .$join;
}
}
//将__TABLE_NAME__这样的字符串替换成正规的表名,并且带上前缀和后缀
$joinStr = preg_replace("/__([A-Z_-]+)__/esU",Config::get('db_prefix').".strtolower('$1')",$joinStr);
return $joinStr;
}
/**
* order分析
* @access protected
* @param mixed $order
* @return string
*/
protected function parseOrder($order) {
if(is_array($order)) {
$array = [];
foreach ($order as $key=>$val){
if(is_numeric($key)) {
$array[] = $this->parseKey($val);
}else{
$array[] = $this->parseKey($key).' '.$val;
}
}
$order = implode(',',$array);
}
return !empty($order)? ' ORDER BY '.$order:'';
}
/**
* group分析
* @access protected
* @param mixed $group
* @return string
*/
protected function parseGroup($group) {
return !empty($group)? ' GROUP BY '.$group:'';
}
/**
* having分析
* @access protected
* @param string $having
* @return string
*/
protected function parseHaving($having) {
return !empty($having)? ' HAVING '.$having:'';
}
/**
* comment分析
* @access protected
* @param string $comment
* @return string
*/
protected function parseComment($comment) {
return !empty($comment)? ' /* '.$comment.' */':'';
}
/**
* distinct分析
* @access protected
* @param mixed $distinct
* @return string
*/
protected function parseDistinct($distinct) {
return !empty($distinct)? ' DISTINCT ' :'';
}
/**
* union分析
* @access protected
* @param mixed $union
* @return string
*/
protected function parseUnion($union) {
if(empty($union)) return '';
if(isset($union['_all'])) {
$str = 'UNION ALL ';
unset($union['_all']);
}else{
$str = 'UNION ';
}
foreach ($union as $u){
$sql[] = $str.(is_array($u)?$this->buildSelectSql($u):$u);
}
return implode(' ',$sql);
}
/**
* 插入记录
* @access public
* @param mixed $data 数据
* @param array $options 参数表达式
* @param boolean $replace 是否replace
* @return false | integer
*/
public function insert($data,$options=[],$replace=false) {
$values = $fields = [];
$this->model = $options['model'];
foreach ($data as $key=>$val){
$value = $this->parseValue($val);
if(is_scalar($value)) { // 过滤非标量数据
$values[] = $value;
$fields[] = $this->parseKey($key);
}
}
$sql = ($replace?'REPLACE':'INSERT').' INTO '.$this->parseTable($options['table']).' ('.implode(',', $fields).') VALUES ('.implode(',', $values).')';
$sql .= $this->parseLock(isset($options['lock'])?$options['lock']:false);
$sql .= $this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql,!empty($options['bind'])?$options['bind']:[]);
}
/**
* 通过Select方式插入记录
* @access public
* @param string $fields 要插入的数据表字段名
* @param string $table 要插入的数据表名
* @param array $option 查询数据参数
* @return false | integer
*/
public function selectInsert($fields,$table,$options=[]) {
$this->model = $options['model'];
if(is_string($fields)) $fields = explode(',',$fields);
array_walk($fields, [$this, 'parseKey']);
$sql = 'INSERT INTO '.$this->parseTable($table).' ('.implode(',', $fields).') ';
$sql .= $this->buildSelectSql($options);
return $this->execute($sql);
}
/**
* 更新记录
* @access public
* @param mixed $data 数据
* @param array $options 表达式
* @return false | integer
*/
public function update($data,$options) {
$this->model = $options['model'];
$sql = 'UPDATE '
.$this->parseTable($options['table'])
.$this->parseSet($data)
.$this->parseWhere(!empty($options['where'])?$options['where']:'')
.$this->parseOrder(!empty($options['order'])?$options['order']:'')
.$this->parseLimit(!empty($options['limit'])?$options['limit']:'')
.$this->parseLock(isset($options['lock'])?$options['lock']:false)
.$this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql,!empty($options['bind'])?$options['bind']:[]);
}
/**
* 删除记录
* @access public
* @param array $options 表达式
* @return false | integer
*/
public function delete($options=[]) {
$this->model = $options['model'];
$sql = 'DELETE FROM '
.$this->parseTable($options['table'])
.$this->parseWhere(!empty($options['where'])?$options['where']:'')
.$this->parseOrder(!empty($options['order'])?$options['order']:'')
.$this->parseLimit(!empty($options['limit'])?$options['limit']:'')
.$this->parseLock(isset($options['lock'])?$options['lock']:false)
.$this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql,!empty($options['bind'])?$options['bind']:[]);
}
/**
* 查找记录
* @access public
* @param array $options 表达式
* @return mixed
*/
public function select($options=[]) {
$this->model = $options['model'];
$sql = $this->buildSelectSql($options);
$cache = isset($options['cache'])?$options['cache']:false;
if($cache) { // 查询缓存检测
$key = is_string($cache['key'])?$cache['key']:md5($sql);
$value = S($key,'',$cache);
if(false !== $value) {
return $value;
}
}
$result = $this->query($sql,!empty($options['bind'])?$options['bind']:[]);
if($cache && false !== $result ) { // 查询缓存写入
S($key,$result,$cache);
}
return $result;
}
/**
* 生成查询SQL
* @access public
* @param array $options 表达式
* @return string
*/
public function buildSelectSql($options=[]) {
if(isset($options['page'])) {
// 根据页数计算limit
if(strpos($options['page'],',')) {
list($page,$listRows) = explode(',',$options['page']);
}else{
$page = $options['page'];
}
$page = $page?$page:1;
$listRows= isset($listRows)?$listRows:(is_numeric($options['limit'])?$options['limit']:20);
$offset = $listRows*((int)$page-1);
$options['limit'] = $offset.','.$listRows;
}
$sql = $this->parseSql($this->selectSql,$options);
$sql .= $this->parseLock(isset($options['lock'])?$options['lock']:false);
return $sql;
}
/**
* 替换SQL语句中表达式
* @access public
* @param array $options 表达式
* @return string
*/
public function parseSql($sql,$options=[]){
$sql = str_replace(
['%TABLE%','%DISTINCT%','%FIELD%','%JOIN%','%WHERE%','%GROUP%','%HAVING%','%ORDER%','%LIMIT%','%UNION%','%COMMENT%'],
[
$this->parseTable($options['table']),
$this->parseDistinct(isset($options['distinct'])?$options['distinct']:false),
$this->parseField(!empty($options['field'])?$options['field']:'*'),
$this->parseJoin(!empty($options['join'])?$options['join']:''),
$this->parseWhere(!empty($options['where'])?$options['where']:''),
$this->parseGroup(!empty($options['group'])?$options['group']:''),
$this->parseHaving(!empty($options['having'])?$options['having']:''),
$this->parseOrder(!empty($options['order'])?$options['order']:''),
$this->parseLimit(!empty($options['limit'])?$options['limit']:''),
$this->parseUnion(!empty($options['union'])?$options['union']:''),
$this->parseComment(!empty($options['comment'])?$options['comment']:'')
],$sql);
return $sql;
}
/**
* 获取最近一次查询的sql语句
* @param string $model 模型名
* @access public
* @return string
*/
public function getLastSql($model='') {
return $model?$this->modelSql[$model]:$this->queryStr;
}
/**
* 获取最近插入的ID
* @access public
* @return string
*/
public function getLastInsID() {
return $this->lastInsID;
}
/**
* 获取最近的错误信息
* @access public
* @return string
*/
public function getError() {
return $this->error;
}
/**
* SQL指令安全过滤
* @access public
* @param string $str SQL字符串
* @return string
*/
public function escapeString($str) {
return addslashes($str);
}
/**
* 设置当前操作模型
* @access public
* @param string $model 模型名
* @return void
*/
public function setModel($model){
$this->model = $model;
}
/**
* 数据库调试 记录当前SQL
* @access protected
*/
protected function debug() {
$this->modelSql[$this->model] = $this->queryStr;
$this->model = '_think_';
// 记录操作结束时间
Debug::remark('queryEndTime','time');
Log::record($this->queryStr.' [ RunTime:'.Debug::getUseTime('queryStartTime','queryEndTime').'s ]','SQL');
}
/**
* 初始化数据库连接
* @access protected
* @param boolean $master 主服务器
* @return void
*/
protected function initConnect($master=true) {
if(1 == $this->config['deploy'])
// 采用分布式数据库
$this->_linkID = $this->multiConnect($master);
else
// 默认单数据库
if ( !$this->_linkID ) $this->_linkID = $this->connect();
}
/**
* 连接分布式服务器
* @access protected
* @param boolean $master 主服务器
* @return void
*/
protected function multiConnect($master=false) {
static $_config = [];
if(empty($_config)) {
// 缓存分布式数据库配置解析
foreach ($this->config as $key=>$val){
$_config[$key] = explode(',',$val);
}
}
// 数据库读写是否分离
if(Config::get('db_rw_separate')){
// 主从式采用读写分离
if($master)
// 主服务器写入
$r = floor(mt_rand(0,Config::get('db_master_num')-1));
else{
if(is_numeric(Config::get('db_slave_no'))) {// 指定服务器读
$r = Config::get('db_slave_no');
}else{
// 读操作连接从服务器
$r = floor(mt_rand(Config::get('db_master_num'),count($_config['hostname'])-1)); // 每次随机连接的数据库
}
}
}else{
// 读写操作不区分服务器
$r = floor(mt_rand(0,count($_config['hostname'])-1)); // 每次随机连接的数据库
}
$db_config = [
'username' => isset($_config['username'][$r])?$_config['username'][$r]:$_config['username'][0],
'password' => isset($_config['password'][$r])?$_config['password'][$r]:$_config['password'][0],
'hostname' => isset($_config['hostname'][$r])?$_config['hostname'][$r]:$_config['hostname'][0],
'hostport' => isset($_config['hostport'][$r])?$_config['hostport'][$r]:$_config['hostport'][0],
'database' => isset($_config['database'][$r])?$_config['database'][$r]:$_config['database'][0],
'dsn' => isset($_config['dsn'][$r])?$_config['dsn'][$r]:$_config['dsn'][0],
'params' => isset($_config['params'][$r])?$_config['params'][$r]:$_config['params'][0],
];
return $this->connect($db_config,$r);
}
/**
* 析构方法
* @access public
*/
public function __destruct() {
// 释放查询
if ($this->queryID){
$this->free();
}
// 关闭连接
$this->close();
}
}

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@@ -1,339 +0,0 @@
<?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>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
/**
* Firebird数据库驱动
* @category Extend
* @package Extend
* @subpackage Driver.Db
* @author 剑雷
*/
class Ibase extends Db{
protected $selectSql = 'SELECT %LIMIT% %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%%ORDER%';
/**
* 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('interbase') ) {
throw_exception(L('_NOT_SUPPERT_').':Interbase or Firebird');
}
if(!empty($config)) {
$this->config = $config;
if(empty($this->config['params'])) {
$this->config['params'] = array();
}
}
}
/**
* 连接数据库方法
* @access public
* @throws ThinkExecption
*/
public function connect($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 ? 'ibase_pconnect':'ibase_connect';
// 处理不带端口号的socket连接情况
$host = $config['hostname'].($config['hostport']?"/{$config['hostport']}":'');
$this->linkID[$linkNum] = $conn($host.':'.$config['database'], $config['username'], $config['password'],C('DB_CHARSET'),0,3);
if ( !$this->linkID[$linkNum]) {
throw_exception(ibase_errmsg());
}
// 标记连接成功
$this->connected = true;
// 注销数据库连接配置信息
if(1 != Config::get('DB_DEPLOY_TYPE')) unset($this->config);
}
return $this->linkID[$linkNum];
}
/**
* 释放查询结果
* @access public
*/
public function free() {
ibase_free_result($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');
$this->queryID = ibase_query($this->_linkID, $str);
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
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');
$result = ibase_query($this->_linkID, $str) ;
$this->debug();
if ( false === $result) {
$this->error();
return false;
} else {
$this->numRows = ibase_affected_rows($this->_linkID);
$this->lastInsID =0;
return $this->numRows;
}
}
public function startTrans() {
$this->initConnect(true);
if ( !$this->_linkID ) return false;
//数据rollback 支持
if ($this->transTimes == 0) {
ibase_trans( IBASE_DEFAULT, $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) {
$result = ibase_commit($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) {
$result =ibase_rollback($this->_linkID);
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* BLOB字段解密函数 Firebird特有
* @access public
* @param $blob 待解密的BLOB
* @return 二进制数据
*/
public function BlobDecode($blob) {
$maxblobsize = 262144;
$blob_data = ibase_blob_info($this->_linkID, $blob );
$blobid = ibase_blob_open($this->_linkID, $blob );
if( $blob_data[0] > $maxblobsize ) {
$realblob = ibase_blob_get($blobid, $maxblobsize);
while($string = ibase_blob_get($blobid, 8192)){
$realblob .= $string;
}
} else {
$realblob = ibase_blob_get($blobid, $blob_data[0]);
}
ibase_blob_close( $blobid );
return( $realblob );
}
/**
* 获得所有的查询数据
* @access private
* @return array
*/
private function getAll() {
//返回数据集
$result = array();
while ( $row = ibase_fetch_assoc($this->queryID)) {
$result[] = $row;
}
//剑雷 2007.12.30 自动解密BLOB字段
//取BLOB字段清单
$bloblist = array();
$fieldCount = ibase_num_fields($this->queryID);
for ($i = 0; $i < $fieldCount; $i++) {
$col_info = ibase_field_info($this->queryID, $i);
if ($col_info['type']=='BLOB') {
$bloblist[]=trim($col_info['name']);
}
}
//如果有BLOB字段,就进行解密处理
if (!empty($bloblist)) {
$i=0;
foreach ($result as $row) {
foreach($bloblist as $field) {
if (!empty($row[$field])) $result[$i][$field]=$this->BlobDecode($row[$field]);
}
$i++;
}
}
return $result;
}
/**
* 取得数据表的字段信息
* @access public
*/
public function getFields($tableName) {
$result = $this->query('SELECT RDB$FIELD_NAME AS FIELD, RDB$DEFAULT_VALUE AS DEFAULT1, RDB$NULL_FLAG AS NULL1 FROM RDB$RELATION_FIELDS WHERE RDB$RELATION_NAME=UPPER(\''.$tableName.'\') ORDER By RDB$FIELD_POSITION');
$info = array();
if($result) {
foreach ($result as $key => $val) {
$info[trim($val['FIELD'])] = array(
'name' => trim($val['FIELD']),
'type' => '',
'notnull' => (bool) ($val['NULL1'] ==1), // 1表示不为Null
'default' => $val['DEFAULT1'],
'primary' => false,
'autoinc' => false,
);
}
}
//剑雷 取表字段类型
$sql='select first 1 * from '. $tableName;
$rs_temp = ibase_query ($this->_linkID, $sql);
$fieldCount = ibase_num_fields($rs_temp);
for ($i = 0; $i < $fieldCount; $i++)
{
$col_info = ibase_field_info($rs_temp, $i);
$info[trim($col_info['name'])]['type']=$col_info['type'];
}
ibase_free_result ($rs_temp);
//剑雷 取表的主键
$sql='select b.rdb$field_name as FIELD_NAME from rdb$relation_constraints a join rdb$index_segments b
on a.rdb$index_name=b.rdb$index_name
where a.rdb$constraint_type=\'PRIMARY KEY\' and a.rdb$relation_name=UPPER(\''.$tableName.'\')';
$rs_temp = ibase_query ($this->_linkID, $sql);
while ($row=ibase_fetch_object($rs_temp)) {
$info[trim($row->FIELD_NAME)]['primary']=True;
}
ibase_free_result ($rs_temp);
return $info;
}
/**
* 取得数据库的表信息
* @access public
*/
public function getTables($dbName='') {
$sql='SELECT DISTINCT RDB$RELATION_NAME FROM RDB$RELATION_FIELDS WHERE RDB$SYSTEM_FLAG=0';
$result = $this->query($sql);
$info = array();
foreach ($result as $key => $val) {
$info[$key] = trim(current($val));
}
return $info;
}
/**
* 关闭数据库
* @access public
*/
public function close() {
if ($this->_linkID){
ibase_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 = ibase_errmsg();
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
* @param string $str SQL指令
* @return string
*/
public function escapeString($str) {
return str_replace("'", "''", $str);
}
/**
* limit
* @access public
* @param $limit limit表达式
* @return string
*/
public function parseLimit($limit) {
$limitStr = '';
if(!empty($limit)) {
$limit = explode(',',$limit);
if(count($limit)>1) {
$limitStr = ' FIRST '.($limit[1]-$limit[0]).' SKIP '.$limit[0].' ';
}else{
$limitStr = ' FIRST '.$limit[0].' ';
}
}
return $limitStr;
}
}

View File

@@ -1,752 +0,0 @@
<?php
// +----------------------------------------------------------------------
// | TOPThink [ 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>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
/**
* Mongo数据库驱动 必须配合MongoModel使用
* @category Extend
* @package Extend
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Mongo extends Db{
protected $_mongo = null; // MongoDb Object
protected $_collection = null; // MongoCollection Object
protected $_dbName = ''; // dbName
protected $_collectionName = ''; // collectionName
protected $_cursor = null; // MongoCursor Object
protected $comparison = array('neq'=>'ne','ne'=>'ne','gt'=>'gt','egt'=>'gte','gte'=>'gte','lt'=>'lt','elt'=>'lte','lte'=>'lte','in'=>'in','not in'=>'nin','nin'=>'nin');
/**
* 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 ( !class_exists('mongo') ) {
throw_exception(L('_NOT_SUPPERT_').':mongo');
}
if(!empty($config)) {
$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;
$host = 'mongodb://'.($config['username']?"{$config['username']}":'').($config['password']?":{$config['password']}@":'').$config['hostname'].($config['hostport']?":{$config['hostport']}":'').'/'.($config['database']?"{$config['database']}":'');
try{
$this->linkID[$linkNum] = new mongo( $host,$config['params']);
}catch (MongoConnectionException $e){
throw_exception($e->getmessage());
}
// 标记连接成功
$this->connected = true;
// 注销数据库连接配置信息
if(1 != C('DB_DEPLOY_TYPE')) unset($this->config);
}
return $this->linkID[$linkNum];
}
/**
* 切换当前操作的Db和Collection
* @access public
* @param string $collection collection
* @param string $db db
* @param boolean $master 是否主服务器
* @return void
*/
public function switchCollection($collection,$db='',$master=true){
// 当前没有连接 则首先进行数据库连接
if ( !$this->_linkID ) $this->initConnect($master);
try{
if(!empty($db)) { // 传人Db则切换数据库
// 当前MongoDb对象
$this->_dbName = $db;
$this->_mongo = $this->_linkID->selectDb($db);
}
// 当前MongoCollection对象
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.getCollection('.$collection.')';
}
if($this->_collectionName != $collection) {
N('db_read',1);
// 记录开始执行时间
G('queryStartTime');
$this->_collection = $this->_mongo->selectCollection($collection);
$this->debug();
$this->_collectionName = $collection; // 记录当前Collection名称
}
}catch (MongoException $e){
throw_exception($e->getMessage());
}
}
/**
* 释放查询结果
* @access public
*/
public function free() {
$this->_cursor = null;
}
/**
* 执行命令
* @access public
* @param array $command 指令
* @return array
*/
public function command($command=array()) {
N('db_write',1);
$this->queryStr = 'command:'.json_encode($command);
// 记录开始执行时间
G('queryStartTime');
$result = $this->_mongo->command($command);
$this->debug();
if(!$result['ok']) {
throw_exception($result['errmsg']);
}
return $result;
}
/**
* 执行语句
* @access public
* @param string $code sql指令
* @param array $args 参数
* @return mixed
*/
public function execute($code,$args=array()) {
N('db_write',1);
$this->queryStr = 'execute:'.$code;
// 记录开始执行时间
G('queryStartTime');
$result = $this->_mongo->execute($code,$args);
$this->debug();
if($result['ok']) {
return $result['retval'];
}else{
throw_exception($result['errmsg']);
}
}
/**
* 关闭数据库
* @access public
*/
public function close() {
if($this->_linkID) {
$this->_linkID->close();
$this->_linkID = null;
$this->_mongo = null;
$this->_collection = null;
$this->_cursor = null;
}
}
/**
* 数据库错误信息
* @access public
* @return string
*/
public function error() {
$this->error = $this->_mongo->lastError();
ThinkLog::record($this->error,'ERR');
return $this->error;
}
/**
* 插入记录
* @access public
* @param mixed $data 数据
* @param array $options 参数表达式
* @param boolean $replace 是否replace
* @return false | integer
*/
public function insert($data,$options=array(),$replace=false) {
if(isset($options['table'])) {
$this->switchCollection($options['table']);
}
$this->model = $options['model'];
N('db_write',1);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.insert(';
$this->queryStr .= $data?json_encode($data):'{}';
$this->queryStr .= ')';
}
try{
// 记录开始执行时间
G('queryStartTime');
$result = $replace? $this->_collection->save($data,true): $this->_collection->insert($data,true);
$this->debug();
if($result) {
$_id = $data['_id'];
if(is_object($_id)) {
$_id = $_id->__toString();
}
$this->lastInsID = $_id;
}
return $result;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
/**
* 插入多条记录
* @access public
* @param array $dataList 数据
* @param array $options 参数表达式
* @return bool
*/
public function insertAll($dataList,$options=array()) {
if(isset($options['table'])) {
$this->switchCollection($options['table']);
}
$this->model = $options['model'];
N('db_write',1);
try{
// 记录开始执行时间
G('queryStartTime');
$result = $this->_collection->batchInsert($dataList);
$this->debug();
return $result;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
/**
* 生成下一条记录ID 用于自增非MongoId主键
* @access public
* @param string $pk 主键名
* @return integer
*/
public function mongo_next_id($pk) {
N('db_read',1);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.find({},{'.$pk.':1}).sort({'.$pk.':-1}).limit(1)';
}
try{
// 记录开始执行时间
G('queryStartTime');
$result = $this->_collection->find(array(),array($pk=>1))->sort(array($pk=>-1))->limit(1);
$this->debug();
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
$data = $result->getNext();
return isset($data[$pk])?$data[$pk]+1:1;
}
/**
* 更新记录
* @access public
* @param mixed $data 数据
* @param array $options 表达式
* @return bool
*/
public function update($data,$options) {
if(isset($options['table'])) {
$this->switchCollection($options['table']);
}
$this->model = $options['model'];
N('db_write',1);
$query = $this->parseWhere($options['where']);
$set = $this->parseSet($data);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.update(';
$this->queryStr .= $query?json_encode($query):'{}';
$this->queryStr .= ','.json_encode($set).')';
}
try{
// 记录开始执行时间
G('queryStartTime');
$result = $this->_collection->update($query,$set,array("multiple" => true));
$this->debug();
return $result;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
/**
* 删除记录
* @access public
* @param array $options 表达式
* @return false | integer
*/
public function delete($options=array()) {
if(isset($options['table'])) {
$this->switchCollection($options['table']);
}
$query = $this->parseWhere($options['where']);
$this->model = $options['model'];
N('db_write',1);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.remove('.json_encode($query).')';
}
try{
// 记录开始执行时间
G('queryStartTime');
$result = $this->_collection->remove($query);
$this->debug();
return $result;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
/**
* 清空记录
* @access public
* @param array $options 表达式
* @return false | integer
*/
public function clear($options=array()){
if(isset($options['table'])) {
$this->switchCollection($options['table']);
}
$this->model = $options['model'];
N('db_write',1);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.remove({})';
}
try{
// 记录开始执行时间
G('queryStartTime');
$result = $this->_collection->drop();
$this->debug();
return $result;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
/**
* 查找记录
* @access public
* @param array $options 表达式
* @return iterator
*/
public function select($options=array()) {
if(isset($options['table'])) {
$this->switchCollection($options['table'],'',false);
}
$cache = isset($options['cache'])?$options['cache']:false;
if($cache) { // 查询缓存检测
$key = is_string($cache['key'])?$cache['key']:md5(serialize($options));
$value = S($key,'','',$cache['type']);
if(false !== $value) {
return $value;
}
}
$this->model = $options['model'];
N('db_query',1);
$query = $this->parseWhere($options['where']);
$field = $this->parseField($options['field']);
try{
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.find(';
$this->queryStr .= $query? json_encode($query):'{}';
$this->queryStr .= $field? ','.json_encode($field):'';
$this->queryStr .= ')';
}
// 记录开始执行时间
G('queryStartTime');
$_cursor = $this->_collection->find($query,$field);
if($options['order']) {
$order = $this->parseOrder($options['order']);
if(C('DB_SQL_LOG')) {
$this->queryStr .= '.sort('.json_encode($order).')';
}
$_cursor = $_cursor->sort($order);
}
if(isset($options['page'])) { // 根据页数计算limit
if(strpos($options['page'],',')) {
list($page,$length) = explode(',',$options['page']);
}else{
$page = $options['page'];
}
$page = $page?$page:1;
$length = isset($length)?$length:(is_numeric($options['limit'])?$options['limit']:20);
$offset = $length*((int)$page-1);
$options['limit'] = $offset.','.$length;
}
if(isset($options['limit'])) {
list($offset,$length) = $this->parseLimit($options['limit']);
if(!empty($offset)) {
if(C('DB_SQL_LOG')) {
$this->queryStr .= '.skip('.intval($offset).')';
}
$_cursor = $_cursor->skip(intval($offset));
}
if(C('DB_SQL_LOG')) {
$this->queryStr .= '.limit('.intval($length).')';
}
$_cursor = $_cursor->limit(intval($length));
}
$this->debug();
$this->_cursor = $_cursor;
$resultSet = iterator_to_array($_cursor);
if($cache && $resultSet ) { // 查询缓存写入
S($key,$resultSet,$cache['expire'],$cache['type']);
}
return $resultSet;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
/**
* 查找某个记录
* @access public
* @param array $options 表达式
* @return array
*/
public function find($options=array()){
if(isset($options['table'])) {
$this->switchCollection($options['table'],'',false);
}
$cache = isset($options['cache'])?$options['cache']:false;
if($cache) { // 查询缓存检测
$key = is_string($cache['key'])?$cache['key']:md5(serialize($options));
$value = S($key,'','',$cache['type']);
if(false !== $value) {
return $value;
}
}
$this->model = $options['model'];
N('db_query',1);
$query = $this->parseWhere($options['where']);
$fields = $this->parseField($options['field']);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.findOne(';
$this->queryStr .= $query?json_encode($query):'{}';
$this->queryStr .= $fields?','.json_encode($fields):'';
$this->queryStr .= ')';
}
try{
// 记录开始执行时间
G('queryStartTime');
$result = $this->_collection->findOne($query,$fields);
$this->debug();
if($cache && $result ) { // 查询缓存写入
S($key,$result,$cache['expire'],$cache['type']);
}
return $result;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
/**
* 统计记录数
* @access public
* @param array $options 表达式
* @return iterator
*/
public function count($options=array()){
if(isset($options['table'])) {
$this->switchCollection($options['table'],'',false);
}
$this->model = $options['model'];
N('db_query',1);
$query = $this->parseWhere($options['where']);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName;
$this->queryStr .= $query?'.find('.json_encode($query).')':'';
$this->queryStr .= '.count()';
}
try{
// 记录开始执行时间
G('queryStartTime');
$count = $this->_collection->count($query);
$this->debug();
return $count;
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
}
public function group($keys,$initial,$reduce,$options=array()){
$this->_collection->group($keys,$initial,$reduce,$options);
}
/**
* 取得数据表的字段信息
* @access public
* @return array
*/
public function getFields($collection=''){
if(!empty($collection) && $collection != $this->_collectionName) {
$this->switchCollection($collection,'',false);
}
N('db_query',1);
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.'.$this->_collectionName.'.findOne()';
}
try{
// 记录开始执行时间
G('queryStartTime');
$result = $this->_collection->findOne();
$this->debug();
} catch (MongoCursorException $e) {
throw_exception($e->getMessage());
}
if($result) { // 存在数据则分析字段
$info = array();
foreach ($result as $key=>$val){
$info[$key] = array(
'name'=>$key,
'type'=>getType($val),
);
}
return $info;
}
// 暂时没有数据 返回false
return false;
}
/**
* 取得当前数据库的collection信息
* @access public
*/
public function getTables(){
if(C('DB_SQL_LOG')) {
$this->queryStr = $this->_dbName.'.getCollenctionNames()';
}
N('db_query',1);
// 记录开始执行时间
G('queryStartTime');
$list = $this->_mongo->listCollections();
$this->debug();
$info = array();
foreach ($list as $collection){
$info[] = $collection->getName();
}
return $info;
}
/**
* set分析
* @access protected
* @param array $data
* @return string
*/
protected function parseSet($data) {
$result = array();
foreach ($data as $key=>$val){
if(is_array($val)) {
switch($val[0]) {
case 'inc':
$result['$inc'][$key] = (int)$val[1];
break;
case 'set':
case 'unset':
case 'push':
case 'pushall':
case 'addtoset':
case 'pop':
case 'pull':
case 'pullall':
$result['$'.$val[0]][$key] = $val[1];
break;
default:
$result['$set'][$key] = $val;
}
}else{
$result['$set'][$key] = $val;
}
}
return $result;
}
/**
* order分析
* @access protected
* @param mixed $order
* @return array
*/
protected function parseOrder($order) {
if(is_string($order)) {
$array = explode(',',$order);
$order = array();
foreach ($array as $key=>$val){
$arr = explode(' ',trim($val));
if(isset($arr[1])) {
$arr[1] = $arr[1]=='asc'?1:-1;
}else{
$arr[1] = 1;
}
$order[$arr[0]] = $arr[1];
}
}
return $order;
}
/**
* limit分析
* @access protected
* @param mixed $limit
* @return array
*/
protected function parseLimit($limit) {
if(strpos($limit,',')) {
$array = explode(',',$limit);
}else{
$array = array(0,$limit);
}
return $array;
}
/**
* field分析
* @access protected
* @param mixed $fields
* @return array
*/
public function parseField($fields){
if(empty($fields)) {
$fields = array();
}
if(is_string($fields)) {
$fields = explode(',',$fields);
}
return $fields;
}
/**
* where分析
* @access protected
* @param mixed $where
* @return array
*/
public function parseWhere($where){
$query = array();
foreach ($where as $key=>$val){
if('_id' != $key && 0===strpos($key,'_')) {
// 解析特殊条件表达式
$query = $this->parseThinkWhere($key,$val);
}else{
// 查询字段的安全过滤
if(!preg_match('/^[A-Z_\|\&\-.a-z0-9]+$/',trim($key))){
throw_exception(L('_ERROR_QUERY_').':'.$key);
}
$key = trim($key);
if(strpos($key,'|')) {
$array = explode('|',$key);
$str = array();
foreach ($array as $k){
$str[] = $this->parseWhereItem($k,$val);
}
$query['$or'] = $str;
}elseif(strpos($key,'&')){
$array = explode('&',$key);
$str = array();
foreach ($array as $k){
$str[] = $this->parseWhereItem($k,$val);
}
$query = array_merge($query,$str);
}else{
$str = $this->parseWhereItem($key,$val);
$query = array_merge($query,$str);
}
}
}
return $query;
}
/**
* 特殊条件分析
* @access protected
* @param string $key
* @param mixed $val
* @return string
*/
protected function parseThinkWhere($key,$val) {
$query = array();
switch($key) {
case '_query': // 字符串模式查询条件
parse_str($val,$query);
if(isset($query['_logic']) && strtolower($query['_logic']) == 'or' ) {
unset($query['_logic']);
$query['$or'] = $query;
}
break;
case '_string':// MongoCode查询
$query['$where'] = new MongoCode($val);
break;
}
return $query;
}
/**
* where子单元分析
* @access protected
* @param string $key
* @param mixed $val
* @return array
*/
protected function parseWhereItem($key,$val) {
$query = array();
if(is_array($val)) {
if(is_string($val[0])) {
$con = strtolower($val[0]);
if(in_array($con,array('neq','ne','gt','egt','gte','lt','lte','elt'))) { // 比较运算
$k = '$'.$this->comparison[$con];
$query[$key] = array($k=>$val[1]);
}elseif('like'== $con){ // 模糊查询 采用正则方式
$query[$key] = new MongoRegex("/".$val[1]."/");
}elseif('mod'==$con){ // mod 查询
$query[$key] = array('$mod'=>$val[1]);
}elseif('regex'==$con){ // 正则查询
$query[$key] = new MongoRegex($val[1]);
}elseif(in_array($con,array('in','nin','not in'))){ // IN NIN 运算
$data = is_string($val[1])? explode(',',$val[1]):$val[1];
$k = '$'.$this->comparison[$con];
$query[$key] = array($k=>$data);
}elseif('all'==$con){ // 满足所有指定条件
$data = is_string($val[1])? explode(',',$val[1]):$val[1];
$query[$key] = array('$all'=>$data);
}elseif('between'==$con){ // BETWEEN运算
$data = is_string($val[1])? explode(',',$val[1]):$val[1];
$query[$key] = array('$gte'=>$data[0],'$lte'=>$data[1]);
}elseif('not between'==$con){
$data = is_string($val[1])? explode(',',$val[1]):$val[1];
$query[$key] = array('$lt'=>$data[0],'$gt'=>$data[1]);
}elseif('exp'==$con){ // 表达式查询
$query['$where'] = new MongoCode($val[1]);
}elseif('exists'==$con){ // 字段是否存在
$query[$key] =array('$exists'=>(bool)$val[1]);
}elseif('size'==$con){ // 限制属性大小
$query[$key] =array('$size'=>intval($val[1]));
}elseif('type'==$con){ // 限制字段类型 1 浮点型 2 字符型 3 对象或者MongoDBRef 5 MongoBinData 7 MongoId 8 布尔型 9 MongoDate 10 NULL 15 MongoCode 16 32位整型 17 MongoTimestamp 18 MongoInt64 如果是数组的话判断元素的类型
$query[$key] =array('$type'=>intval($val[1]));
}else{
$query[$key] = $val;
}
return $query;
}
}
$query[$key] = $val;
return $query;
}
}

View File

@@ -1,334 +0,0 @@
<?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>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
/**
* MSsql数据库驱动 要求sqlserver2005
* @category Extend
* @package Extend
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Mssql extends Db{
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('mssql_connect') ) {
throw_exception(L('_NOT_SUPPERT_').':mssql');
}
if(!empty($config)) {
$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 ? 'mssql_pconnect':'mssql_connect';
// 处理不带端口号的socket连接情况
$sepr = IS_WIN ? ',' : ':';
$host = $config['hostname'].($config['hostport']?$sepr."{$config['hostport']}":'');
$this->linkID[$linkNum] = $conn( $host, $config['username'], $config['password']);
if ( !$this->linkID[$linkNum] ) throw_exception("Couldn't connect to SQL Server on $host");
if ( !empty($config['database']) && !mssql_select_db($config['database'], $this->linkID[$linkNum]) ) {
throw_exception("Couldn't open database '".$config['database']);
}
// 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() {
mssql_free_result($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');
$this->queryID = mssql_query($str, $this->_linkID);
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
$this->numRows = mssql_num_rows($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');
$result = mssql_query($str, $this->_linkID);
$this->debug();
if ( false === $result ) {
$this->error();
return false;
} else {
$this->numRows = mssql_rows_affected($this->_linkID);
$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";
$result = mssql_query($query, $this->_linkID);
list($last_insert_id) = mssql_fetch_row($result);
mssql_free_result($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) {
mssql_query('BEGIN TRAN', $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 = mssql_query('COMMIT TRAN', $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 = mssql_query('ROLLBACK TRAN', $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($row = mssql_fetch_assoc($this->queryID))
$result[] = $row;
}
return $result;
}
/**
* 取得数据表的字段信息
* @access public
* @return array
*/
public function getFields($tableName) {
$result = $this->query("SELECT column_name, data_type, column_default, is_nullable
FROM information_schema.tables AS t
JOIN information_schema.columns AS c
ON t.table_catalog = c.table_catalog
AND t.table_schema = c.table_schema
AND t.table_name = c.table_name
WHERE t.table_name = '$tableName'");
$info = array();
if($result) {
foreach ($result as $key => $val) {
$info[$val['column_name']] = array(
'name' => $val['column_name'],
'type' => $val['data_type'],
'notnull' => (bool) ($val['is_nullable'] === ''), // not null is empty, null is yes
'default' => $val['column_default'],
'primary' => false,
'autoinc' => false,
);
}
}
return $info;
}
/**
* 取得数据表的字段信息
* @access public
* @return array
*/
public function getTables($dbName='') {
$result = $this->query("SELECT TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE'
");
$info = array();
foreach ($result as $key => $val) {
$info[$key] = current($val);
}
return $info;
}
/**
* order分析
* @access protected
* @param mixed $order
* @return string
*/
protected function parseOrder($order) {
return !empty($order)? ' ORDER BY '.$order:' ORDER BY rand()';
}
/**
* limit
* @access public
* @return string
*/
public function parseLimit($limit) {
if(empty($limit)) return '';
$limit = explode(',',$limit);
if(count($limit)>1)
$limitStr = '(T1.ROW_NUMBER BETWEEN '.$limit[0].' + 1 AND '.$limit[0].' + '.$limit[1].')';
else
$limitStr = '(T1.ROW_NUMBER BETWEEN 1 AND '.$limit[0].")";
return 'WHERE '.$limitStr;
}
/**
* 更新记录
* @access public
* @param mixed $data 数据
* @param array $options 表达式
* @return false | integer
*/
public function update($data,$options) {
$this->model = $options['model'];
$sql = 'UPDATE '
.$this->parseTable($options['table'])
.$this->parseSet($data)
.$this->parseWhere(!empty($options['where'])?$options['where']:'')
.$this->parseLock(isset($options['lock'])?$options['lock']:false)
.$this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql);
}
/**
* 删除记录
* @access public
* @param array $options 表达式
* @return false | integer
*/
public function delete($options=array()) {
$this->model = $options['model'];
$sql = 'DELETE FROM '
.$this->parseTable($options['table'])
.$this->parseWhere(!empty($options['where'])?$options['where']:'')
.$this->parseLock(isset($options['lock'])?$options['lock']:false)
.$this->parseComment(!empty($options['comment'])?$options['comment']:'');
return $this->execute($sql);
}
/**
* 关闭数据库
* @access public
*/
public function close() {
if ($this->_linkID){
mssql_close($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 = mssql_get_last_message();
if('' != $this->queryStr){
$this->error .= "\n [ SQL语句 ] : ".$this->queryStr;
}
ThinkLog::record($this->error,'ERR');
return $this->error;
}
}

View File

@@ -8,210 +8,24 @@
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
use Think\Db\Driver;
/**
* Mysql数据库驱动
* @category Think
* @package Think
* PDO数据库驱动
* @category Extend
* @package Extend
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Mysql 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('mysql') ) {
throw_exception(L('_NOT_SUPPERT_').':mysql');
}
if(!empty($config)) {
$this->config = $config;
if(empty($this->config['params'])) {
$this->config['params'] = '';
}
}
}
/**
* 连接数据库方法
* @access public
* @throws ThinkExecption
*/
public function connect($config='',$linkNum=0,$force=false) {
if ( !isset($this->linkID[$linkNum]) ) {
if(empty($config)) $config = $this->config;
// 处理不带端口号的socket连接情况
$host = $config['hostname'].($config['hostport']?":{$config['hostport']}":'');
// 是否长连接
$pconnect = !empty($config['params']['persist'])? $config['params']['persist']:$this->pconnect;
if($pconnect) {
$this->linkID[$linkNum] = mysql_pconnect( $host, $config['username'], $config['password'],131072);
}else{
$this->linkID[$linkNum] = mysql_connect( $host, $config['username'], $config['password'],true,131072);
}
if ( !$this->linkID[$linkNum] || (!empty($config['database']) && !mysql_select_db($config['database'], $this->linkID[$linkNum])) ) {
throw_exception(mysql_error());
}
$dbVersion = mysql_get_server_info($this->linkID[$linkNum]);
//使用UTF8存取数据库
mysql_query("SET NAMES '".$this->conf['db_charset']."'", $this->linkID[$linkNum]);
//设置 sql_model
if($dbVersion >'5.0.1'){
mysql_query("SET sql_mode=''",$this->linkID[$linkNum]);
}
// 标记连接成功
$this->connected = true;
// 注销数据库连接配置信息
if(1 != $this->conf['db_deploy_type']) unset($this->config);
}
return $this->linkID[$linkNum];
}
/**
* 释放查询结果
* @access public
*/
public function free() {
mysql_free_result($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) {
if(0===stripos($str, 'call')){ // 存储过程查询支持
$this->close();
}
$this->initConnect(false);
if ( !$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
\Think\Debug::remark('queryStartTime','time');
$this->queryID = mysql_query($str, $this->_linkID);
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
$this->numRows = mysql_num_rows($this->queryID);
return $this->getAll();
}
}
/**
* 执行语句
* @access public
* @param string $str sql指令
* @return integer|false
*/
public function execute($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
\Think\Debug::remark('queryStartTime','time');
$result = mysql_query($str, $this->_linkID) ;
$this->debug();
if ( false === $result) {
$this->error();
return false;
} else {
$this->numRows = mysql_affected_rows($this->_linkID);
$this->lastInsID = mysql_insert_id($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) {
mysql_query('START 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 = mysql_query('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 = mysql_query('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($row = mysql_fetch_assoc($this->queryID)){
$result[] = $row;
}
mysql_data_seek($this->queryID,0);
}
return $result;
}
class Mysql extends Driver{
/**
* 取得数据表的字段信息
* @access public
* @return array
*/
public function getFields($tableName) {
$result = $this->query('SHOW COLUMNS FROM '.$this->parseKey($tableName));
$this->initConnect(true);
$sql = 'SHOW COLUMNS FROM `'.$tableName.'`';
$result = $this->query($sql);
$info = array();
if($result) {
foreach ($result as $key => $val) {
@@ -231,15 +45,10 @@ class Mysql extends Db{
/**
* 取得数据库的表信息
* @access public
* @return array
*/
public function getTables($dbName='') {
if(!empty($dbName)) {
$sql = 'SHOW TABLES FROM '.$dbName;
}else{
$sql = 'SHOW TABLES ';
}
$result = $this->query($sql);
$sql = !empty($dbName)?'SHOW TABLES FROM '.$dbName:'SHOW TABLES ';
$result = $this->query($sql);
$info = array();
foreach ($result as $key => $val) {
$info[$key] = current($val);
@@ -248,94 +57,7 @@ class Mysql extends Db{
}
/**
* 替换记录
* @access public
* @param mixed $data 数据
* @param array $options 参数表达式
* @return false | integer
*/
public function replace($data,$options=array()) {
foreach ($data as $key=>$val){
$value = $this->parseValue($val);
if(is_scalar($value)) { // 过滤非标量数据
$values[] = $value;
$fields[] = $this->parseKey($key);
}
}
$sql = 'REPLACE INTO '.$this->parseTable($options['table']).' ('.implode(',', $fields).') VALUES ('.implode(',', $values).')';
return $this->execute($sql);
}
/**
* 插入记录
* @access public
* @param mixed $datas 数据
* @param array $options 参数表达式
* @param boolean $replace 是否replace
* @return false | integer
*/
public function insertAll($datas,$options=array(),$replace=false) {
if(!is_array($datas[0])) return false;
$fields = array_keys($datas[0]);
array_walk($fields, array($this, 'parseKey'));
$values = array();
foreach ($datas as $data){
$value = array();
foreach ($data as $key=>$val){
$val = $this->parseValue($val);
if(is_scalar($val)) { // 过滤非标量数据
$value[] = $val;
}
}
$values[] = '('.implode(',', $value).')';
}
$sql = ($replace?'REPLACE':'INSERT').' INTO '.$this->parseTable($options['table']).' ('.implode(',', $fields).') VALUES '.implode(',',$values);
return $this->execute($sql);
}
/**
* 关闭数据库
* @access public
* @return void
*/
public function close() {
if ($this->_linkID){
mysql_close($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() {
$this->error = mysql_error($this->_linkID);
if('' != $this->queryStr){
$this->error .= "\n [ SQL语句 ] : ".$this->queryStr;
}
\Think\Log::record($this->error,'ERR');
return $this->error;
}
/**
* SQL指令安全过滤
* @access public
* @param string $str SQL字符串
* @return string
*/
public function escapeString($str) {
if($this->_linkID) {
return mysql_real_escape_string($str,$this->_linkID);
}else{
return mysql_escape_string($str);
}
}
/**
* 字段和表名处理添加`
* 字段和表名处理
* @access protected
* @param string $key
* @return string
@@ -345,6 +67,7 @@ class Mysql extends Db{
if(!preg_match('/[,\'\"\*\(\)`.\s]/',$key)) {
$key = '`'.$key.'`';
}
return $key;
return $key;
}
}

View File

@@ -1,345 +0,0 @@
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2007 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
/**
* Mysqli数据库驱动类
* @category Think
* @package Think
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Mysqli 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('mysqli') ) {
throw_exception(L('_NOT_SUPPERT_').':mysqli');
}
if(!empty($config)) {
$this->config = $config;
if(empty($this->config['params'])) {
$this->config['params'] = '';
}
}
}
/**
* 连接数据库方法
* @access public
* @throws ThinkExecption
*/
public function connect($config='',$linkNum=0) {
if ( !isset($this->linkID[$linkNum]) ) {
if(empty($config)) $config = $this->config;
$this->linkID[$linkNum] = new mysqli($config['hostname'],$config['username'],$config['password'],$config['database'],$config['hostport']?intval($config['hostport']):3306);
if (mysqli_connect_errno()) throw_exception(mysqli_connect_error());
$dbVersion = $this->linkID[$linkNum]->server_version;
// 设置数据库编码
$this->linkID[$linkNum]->query("SET NAMES '".C('DB_CHARSET')."'");
//设置 sql_model
if($dbVersion >'5.0.1'){
$this->linkID[$linkNum]->query("SET sql_mode=''");
}
// 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->free_result();
$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 = $this->_linkID->query($str);
// 对存储过程改进
if( $this->_linkID->more_results() ){
while (($res = $this->_linkID->next_result()) != NULL) {
$res->free_result();
}
}
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
$this->numRows = $this->queryID->num_rows;
$this->numCols = $this->queryID->field_count;
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 = $this->_linkID->query($str);
$this->debug();
if ( false === $result ) {
$this->error();
return false;
} else {
$this->numRows = $this->_linkID->affected_rows;
$this->lastInsID = $this->_linkID->insert_id;
return $this->numRows;
}
}
/**
* 启动事务
* @access public
* @return void
*/
public function startTrans() {
$this->initConnect(true);
//数据rollback 支持
if ($this->transTimes == 0) {
$this->_linkID->autocommit(false);
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit() {
if ($this->transTimes > 0) {
$result = $this->_linkID->commit();
$this->_linkID->autocommit( true);
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 事务回滚
* @access public
* @return boolen
*/
public function rollback() {
if ($this->transTimes > 0) {
$result = $this->_linkID->rollback();
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 获得所有的查询数据
* @access private
* @param string $sql sql语句
* @return array
*/
private function getAll() {
//返回数据集
$result = array();
if($this->numRows>0) {
//返回数据集
for($i=0;$i<$this->numRows ;$i++ ){
$result[$i] = $this->queryID->fetch_assoc();
}
$this->queryID->data_seek(0);
}
return $result;
}
/**
* 取得数据表的字段信息
* @access public
* @return array
*/
public function getFields($tableName) {
$result = $this->query('SHOW COLUMNS FROM '.$this->parseKey($tableName));
$info = array();
if($result) {
foreach ($result as $key => $val) {
$info[$val['Field']] = array(
'name' => $val['Field'],
'type' => $val['Type'],
'notnull' => (bool) ($val['Null'] === ''), // not null is empty, null is yes
'default' => $val['Default'],
'primary' => (strtolower($val['Key']) == 'pri'),
'autoinc' => (strtolower($val['Extra']) == 'auto_increment'),
);
}
}
return $info;
}
/**
* 取得数据表的字段信息
* @access public
* @return array
*/
public function getTables($dbName='') {
$sql = !empty($dbName)?'SHOW TABLES FROM '.$dbName:'SHOW TABLES ';
$result = $this->query($sql);
$info = array();
if($result) {
foreach ($result as $key => $val) {
$info[$key] = current($val);
}
}
return $info;
}
/**
* 替换记录
* @access public
* @param mixed $data 数据
* @param array $options 参数表达式
* @return false | integer
*/
public function replace($data,$options=array()) {
foreach ($data as $key=>$val){
$value = $this->parseValue($val);
if(is_scalar($value)) { // 过滤非标量数据
$values[] = $value;
$fields[] = $this->parseKey($key);
}
}
$sql = 'REPLACE INTO '.$this->parseTable($options['table']).' ('.implode(',', $fields).') VALUES ('.implode(',', $values).')';
return $this->execute($sql);
}
/**
* 插入记录
* @access public
* @param mixed $datas 数据
* @param array $options 参数表达式
* @param boolean $replace 是否replace
* @return false | integer
*/
public function insertAll($datas,$options=array(),$replace=false) {
if(!is_array($datas[0])) return false;
$fields = array_keys($datas[0]);
array_walk($fields, array($this, 'parseKey'));
$values = array();
foreach ($datas as $data){
$value = array();
foreach ($data as $key=>$val){
$val = $this->parseValue($val);
if(is_scalar($val)) { // 过滤非标量数据
$value[] = $val;
}
}
$values[] = '('.implode(',', $value).')';
}
$sql = ($replace?'REPLACE':'INSERT').' INTO '.$this->parseTable($options['table']).' ('.implode(',', $fields).') VALUES '.implode(',',$values);
return $this->execute($sql);
}
/**
* 关闭数据库
* @access public
* @return volid
*/
public function close() {
if ($this->_linkID){
$this->_linkID->close();
}
$this->_linkID = null;
}
/**
* 数据库错误信息
* 并显示当前的SQL语句
* @static
* @access public
* @return string
*/
public function error() {
$this->error = $this->_linkID->error;
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
* @static
* @access public
* @param string $str SQL指令
* @return string
*/
public function escapeString($str) {
if($this->_linkID) {
return $this->_linkID->real_escape_string($str);
}else{
return addslashes($str);
}
}
/**
* 字段和表名处理添加`
* @access protected
* @param string $key
* @return string
*/
protected function parseKey(&$key) {
$key = trim($key);
if(!preg_match('/[,\'\"\*\(\)`.\s]/',$key)) {
$key = '`'.$key.'`';
}
return $key;
}
}

View File

@@ -9,7 +9,7 @@
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
use Think\Db\Driver;
/**
* Oracle数据库驱动
* @category Extend
@@ -17,193 +17,49 @@ use Think\Db;
* @subpackage Driver.Db
* @author ZhangXuehun <zhangxuehun@sohu.com>
*/
class Oracle extends Db{
class Oracle extends Driver{
private $mode = OCI_COMMIT_ON_SUCCESS;
private $table = '';
protected $selectSql = 'SELECT * FROM (SELECT thinkphp.*, rownum AS numrow FROM (SELECT %DISTINCT% %FIELD% FROM %TABLE%%JOIN%%WHERE%%GROUP%%HAVING%%ORDER%) thinkphp ) %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=''){
putenv("NLS_LANG=AMERICAN_AMERICA.UTF8");
if ( !extension_loaded('oci8') ) {
throw_exception(L('_NOT_SUPPERT_').'oracle');
}
if(!empty($config)) {
$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 ? 'oci_pconnect':'oci_new_connect';
$this->linkID[$linkNum] = $conn($config['username'], $config['password'],$config['database']);//modify by wyfeng at 2008.12.19
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() {
oci_free_statement($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;
//更改事务模式
$this->mode = OCI_COMMIT_ON_SUCCESS;
//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');
$this->queryID = oci_parse($this->_linkID,$str);
$this->debug();
if (false === oci_execute($this->queryID, $this->mode)) {
$this->error();
return false;
} else {
return $this->getAll();
}
}
/**
* 执行语句
* @access public
* @param string $str sql指令
* @return integer
*/
public function execute($str) {
public function execute($str,$bind=[]) {
$this->initConnect(true);
if ( !$this->_linkID ) return false;
$this->queryStr = $str;
// 判断新增操作
$flag = false;
if(preg_match("/^\s*(INSERT\s+INTO)\s+(\w+)\s+/i", $this->queryStr, $match)) {
$this->table = C("DB_SEQUENCE_PREFIX") .str_ireplace(C("DB_PREFIX"), "", $match[2]);
$this->table = C("DB_SEQUENCE_PREFIX").str_ireplace(C("DB_PREFIX"), "", $match[2]);
$flag = (boolean)$this->query("SELECT * FROM user_sequences WHERE sequence_name='" . strtoupper($this->table) . "'");
}//modify by wyfeng at 2009.08.28
//更改事务模式
$this->mode = OCI_COMMIT_ON_SUCCESS;
}
//释放前次的查询结果
if ( $this->queryID ) $this->free();
N('db_write',1);
if ( !empty($this->PDOStatement) ) $this->free();
$this->executeTimes++;
// 记录开始执行时间
G('queryStartTime');
$stmt = oci_parse($this->_linkID,$str);
Debug::remark('queryStartTime','time');
$this->PDOStatement = $this->_linkID->prepare($str);
if(false === $this->PDOStatement) {
throw_exception($this->error());
}
$result = $this->PDOStatement->execute($bind);
$this->debug();
if (false === oci_execute($stmt)) {
if ( false === $result) {
$this->error();
return false;
} else {
$this->numRows = oci_num_rows($stmt);
$this->lastInsID = $flag?$this->insertLastId():0;//modify by wyfeng at 2009.08.28
$this->numRows = $this->PDOStatement->rowCount();
if($flag || preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
$this->lastInsID = $this->getLastInsertId();
}
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) {
$this->mode = OCI_DEFAULT;
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit(){
if ($this->transTimes > 0) {
$result = oci_commit($this->_linkID);
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) {
$result = oci_rollback($this->_linkID);
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();
$this->numRows = oci_fetch_all($this->queryID, $result, 0, -1, OCI_FETCHSTATEMENT_BY_ROW);
//add by wyfeng at 2008-12-23 强制将字段名转换为小写以配合Model类函数如count等
if(C("DB_CASE_LOWER")) {
foreach($result as $k=>$v) {
$result[$k] = array_change_key_case($result[$k], CASE_LOWER);
}
}
return $result;
}
/**
* 取得数据表的字段信息
* @access public
@@ -242,39 +98,6 @@ class Oracle extends Db{
return $info;
}
/**
* 关闭数据库
* @access public
*/
public function close() {
if($this->_linkID){
oci_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) {
if($result){
$error = oci_error($this->queryID);
}elseif(!$this->_linkID){
$error = oci_error();
}else{
$error = oci_error($this->_linkID);
}
if('' != $this->queryStr){
$error['message'] .= "\n [ SQL语句 ] : ".$this->queryStr;
}
$result? ThinkLog::record($error['message'],'ERR'):throw_exception($error['message'],'',$error['code']);
$this->error = $error['message'];
return $this->error;
}
/**
* SQL指令安全过滤
* @access public
@@ -309,7 +132,7 @@ class Oracle extends Db{
* @access public
* @return integer
*/
public function insertLastId() {
public function getLastInsertId() {
if(empty($this->table)) {
return 0;
}

View File

@@ -1,447 +0,0 @@
<?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>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
/**
* PDO数据库驱动
* @category Extend
* @package Extend
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Pdo extends Db{
protected $PDOStatement = null;
private $table = '';
/**
* 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 ( !class_exists('PDO') ) {
throw_exception(L('_NOT_SUPPERT_').':PDO');
}
if(!empty($config)) {
$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 = $this->config;
if($this->pconnect) {
$config['params'][PDO::ATTR_PERSISTENT] = true;
}
//$config['params'][PDO::ATTR_CASE] = C("DB_CASE_LOWER")?PDO::CASE_LOWER:PDO::CASE_UPPER;
try{
$this->linkID[$linkNum] = new PDO( $config['dsn'], $config['username'], $config['password'],$config['params']);
}catch (PDOException $e) {
throw_exception($e->getMessage());
}
// 因为PDO的连接切换可能导致数据库类型不同因此重新获取下当前的数据库类型
$this->dbType = $this->_getDsnType($config['dsn']);
if(in_array($this->dbType,array('MSSQL','ORACLE','IBASE','OCI'))) {
// 由于PDO对于以上的数据库支持不够完美所以屏蔽了 如果仍然希望使用PDO 可以注释下面一行代码
throw_exception('由于目前PDO暂时不能完美支持'.$this->dbType.' 请使用官方的'.$this->dbType.'驱动');
}
$this->linkID[$linkNum]->exec('SET NAMES '.C('DB_CHARSET'));
// 标记连接成功
$this->connected = true;
// 注销数据库连接配置信息
if(1 != C('DB_DEPLOY_TYPE')) unset($this->config);
}
return $this->linkID[$linkNum];
}
/**
* 释放查询结果
* @access public
*/
public function free() {
$this->PDOStatement = 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 = $str;
//释放前次的查询结果
if ( !empty($this->PDOStatement) ) $this->free();
N('db_query',1);
// 记录开始执行时间
G('queryStartTime');
$this->PDOStatement = $this->_linkID->prepare($str);
if(false === $this->PDOStatement)
throw_exception($this->error());
$result = $this->PDOStatement->execute();
$this->debug();
if ( false === $result ) {
$this->error();
return false;
} else {
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;
$flag = false;
if($this->dbType == 'OCI')
{
if(preg_match("/^\s*(INSERT\s+INTO)\s+(\w+)\s+/i", $this->queryStr, $match)) {
$this->table = C("DB_SEQUENCE_PREFIX").str_ireplace(C("DB_PREFIX"), "", $match[2]);
$flag = (boolean)$this->query("SELECT * FROM user_sequences WHERE sequence_name='" . strtoupper($this->table) . "'");
}
}//modify by wyfeng at 2009.08.28
//释放前次的查询结果
if ( !empty($this->PDOStatement) ) $this->free();
N('db_write',1);
// 记录开始执行时间
G('queryStartTime');
$this->PDOStatement = $this->_linkID->prepare($str);
if(false === $this->PDOStatement) {
throw_exception($this->error());
}
$result = $this->PDOStatement->execute();
$this->debug();
if ( false === $result) {
$this->error();
return false;
} else {
$this->numRows = $this->PDOStatement->rowCount();
if($flag || preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
$this->lastInsID = $this->getLastInsertId();
}
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) {
$this->_linkID->beginTransaction();
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit() {
if ($this->transTimes > 0) {
$result = $this->_linkID->commit();
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 事务回滚
* @access public
* @return boolen
*/
public function rollback() {
if ($this->transTimes > 0) {
$result = $this->_linkID->rollback();
$this->transTimes = 0;
if(!$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 = $this->PDOStatement->fetchAll(PDO::FETCH_ASSOC);
$this->numRows = count( $result );
return $result;
}
/**
* 取得数据表的字段信息
* @access public
*/
public function getFields($tableName) {
$this->initConnect(true);
if(C('DB_DESCRIBE_TABLE_SQL')) {
// 定义特殊的字段查询SQL
$sql = str_replace('%table%',$tableName,C('DB_DESCRIBE_TABLE_SQL'));
}else{
switch($this->dbType) {
case 'MSSQL':
case 'SQLSRV':
$sql = "SELECT column_name as 'Name', data_type as 'Type', column_default as 'Default', is_nullable as 'Null'
FROM information_schema.tables AS t
JOIN information_schema.columns AS c
ON t.table_catalog = c.table_catalog
AND t.table_schema = c.table_schema
AND t.table_name = c.table_name
WHERE t.table_name = '$tableName'";
break;
case 'SQLITE':
$sql = 'PRAGMA table_info ('.$tableName.') ';
break;
case 'ORACLE':
case 'OCI':
$sql = "SELECT a.column_name \"Name\",data_type \"Type\",decode(nullable,'Y',0,1) notnull,data_default \"Default\",decode(a.column_name,b.column_name,1,0) \"pk\" "
."FROM user_tab_columns a,(SELECT column_name FROM user_constraints c,user_cons_columns col "
."WHERE c.constraint_name=col.constraint_name AND c.constraint_type='P' and c.table_name='".strtoupper($tableName)
."') b where table_name='".strtoupper($tableName)."' and a.column_name=b.column_name(+)";
break;
case 'PGSQL':
$sql = 'select fields_name as "Name",fields_type as "Type",fields_not_null as "Null",fields_key_name as "Key",fields_default as "Default",fields_default as "Extra" from table_msg('.$tableName.');';
break;
case 'IBASE':
break;
case 'MYSQL':
default:
$sql = 'DESCRIBE '.$tableName;//备注: 驱动类不只针对mysql不能加``
}
}
$result = $this->query($sql);
$info = array();
if($result) {
foreach ($result as $key => $val) {
$val = array_change_key_case($val);
$val['name'] = isset($val['name'])?$val['name']:"";
$val['type'] = isset($val['type'])?$val['type']:"";
$name = isset($val['field'])?$val['field']:$val['name'];
$info[$name] = array(
'name' => $name ,
'type' => $val['type'],
'notnull' => (bool)(((isset($val['null'])) && ($val['null'] === '')) || ((isset($val['notnull'])) && ($val['notnull'] === ''))), // not null is empty, null is yes
'default' => isset($val['default'])? $val['default'] :(isset($val['dflt_value'])?$val['dflt_value']:""),
'primary' => isset($val['dey'])?strtolower($val['dey']) == 'pri':(isset($val['pk'])?$val['pk']:false),
'autoinc' => isset($val['extra'])?strtolower($val['extra']) == 'auto_increment':(isset($val['key'])?$val['key']:false),
);
}
}
return $info;
}
/**
* 取得数据库的表信息
* @access public
*/
public function getTables($dbName='') {
if(C('DB_FETCH_TABLES_SQL')) {
// 定义特殊的表查询SQL
$sql = str_replace('%db%',$dnName,C('DB_FETCH_TABLES_SQL'));
}else{
switch($this->dbType) {
case 'ORACLE':
case 'OCI':
$sql = 'SELECT table_name FROM user_tables';
break;
case 'MSSQL':
case 'SQLSRV':
$sql = "SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE'";
break;
case 'PGSQL':
$sql = "select tablename as Tables_in_test from pg_tables where schemaname ='public'";
break;
case 'IBASE':
// 暂时不支持
throw_exception(L('_NOT_SUPPORT_DB_').':IBASE');
break;
case 'SQLITE':
$sql = "SELECT name FROM sqlite_master WHERE type='table' "
. "UNION ALL SELECT name FROM sqlite_temp_master "
. "WHERE type='table' ORDER BY name";
break;
case 'MYSQL':
default:
if(!empty($dbName)) {
$sql = 'SHOW TABLES FROM '.$dbName;
}else{
$sql = 'SHOW TABLES ';
}
}
}
$result = $this->query($sql);
$info = array();
foreach ($result as $key => $val) {
$info[$key] = current($val);
}
return $info;
}
/**
* limit分析
* @access protected
* @param mixed $lmit
* @return string
*/
protected function parseLimit($limit) {
$limitStr = '';
if(!empty($limit)) {
switch($this->dbType){
case 'PGSQL':
case 'SQLITE':
$limit = explode(',',$limit);
if(count($limit)>1) {
$limitStr .= ' LIMIT '.$limit[1].' OFFSET '.$limit[0].' ';
}else{
$limitStr .= ' LIMIT '.$limit[0].' ';
}
break;
case 'MSSQL':
case 'SQLSRV':
break;
case 'IBASE':
// 暂时不支持
break;
case 'ORACLE':
case 'OCI':
break;
case 'MYSQL':
default:
$limitStr .= ' LIMIT '.$limit.' ';
}
}
return $limitStr;
}
/**
* 字段和表名处理
* @access protected
* @param string $key
* @return string
*/
protected function parseKey(&$key) {
if($this->dbType=='MYSQL'){
$key = trim($key);
if(!preg_match('/[,\'\"\*\(\)`.\s]/',$key)) {
$key = '`'.$key.'`';
}
return $key;
}else{
return parent::parseKey($key);
}
}
/**
* 关闭数据库
* @access public
*/
public function close() {
$this->_linkID = null;
}
/**
* 数据库错误信息
* 并显示当前的SQL语句
* @access public
* @return string
*/
public function error() {
if($this->PDOStatement) {
$error = $this->PDOStatement->errorInfo();
$this->error = $error[2];
}else{
$this->error = '';
}
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
* @param string $str SQL指令
* @return string
*/
public function escapeString($str) {
switch($this->dbType) {
case 'PGSQL':
case 'MSSQL':
case 'SQLSRV':
case 'MYSQL':
return addslashes($str);
case 'IBASE':
case 'SQLITE':
case 'ORACLE':
case 'OCI':
return str_ireplace("'", "''", $str);
}
}
/**
* 获取最后插入id
* @access public
* @return integer
*/
public function getLastInsertId() {
switch($this->dbType) {
case 'PGSQL':
case 'SQLITE':
case 'MSSQL':
case 'SQLSRV':
case 'IBASE':
case 'MYSQL':
return $this->_linkID->lastInsertId();
case 'ORACLE':
case 'OCI':
$sequenceName = $this->table;
$vo = $this->query("SELECT {$sequenceName}.currval currval FROM dual");
return $vo?$vo[0]["currval"]:0;
}
}
}

View File

@@ -9,7 +9,7 @@
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Think\Db\Driver;
use Think\Db;
use Think\Db\Driver;
/**
* Pgsql数据库驱动
* @category Extend
@@ -17,214 +17,25 @@ use Think\Db;
* @subpackage Driver.Db
* @author liu21st <liu21st@gmail.com>
*/
class Pgsql 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('pgsql') ) {
throw_exception(L('_NOT_SUPPERT_').':pgsql');
}
if(!empty($config)) {
$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 ? 'pg_pconnect':'pg_connect';
$this->linkID[$linkNum] = $conn('host='.$config['hostname'].' port='.$config['hostport'].' dbname='.$config['database'].' user='.$config['username'].' password='.$config['password']);
if (0 !== pg_connection_status($this->linkID[$linkNum])){
throw_exception($this->error(false));
}
//设置编码
pg_set_client_encoding($this->linkID[$linkNum], C('DB_CHARSET'));
//$pgInfo = pg_version($this->linkID[$linkNum]);
//$dbVersion = $pgInfo['server'];
// 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() {
pg_free_result($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');
$this->queryID = pg_query($this->_linkID,$str);
$this->debug();
if ( false === $this->queryID ) {
$this->error();
return false;
} else {
$this->numRows = pg_num_rows($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');
$result = pg_query($this->_linkID,$str);
$this->debug();
if ( false === $result ) {
$this->error();
return false;
} else {
$this->numRows = pg_affected_rows($result);
$this->lastInsID = $this->last_insert_id();
return $this->numRows;
}
}
/**
* 用于获取最后插入的ID
* @access public
* @return integer
*/
public function last_insert_id() {
$query = "SELECT LASTVAL() AS insert_id";
$result = pg_query($this->_linkID,$query);
list($last_insert_id) = pg_fetch_array($result,null,PGSQL_ASSOC);
pg_free_result($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 ($this->transTimes == 0) {
pg_exec($this->_linkID,'begin;');
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit() {
if ($this->transTimes > 0) {
$result = pg_exec($this->_linkID,'end;');
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) {
$result = pg_exec($this->_linkID,'abort;');
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
$result = pg_fetch_all($this->queryID);
pg_result_seek($this->queryID,0);
return $result;
}
class Pgsql extends Driver{
/**
* 取得数据表的字段信息
* @access public
* @return array
*/
public function getFields($tableName) {
$result = $this->query("select a.attname as \"Field\",
t.typname as \"Type\",
a.attnotnull as \"Null\",
i.indisprimary as \"Key\",
d.adsrc as \"Default\"
from pg_class c
inner join pg_attribute a on a.attrelid = c.oid
inner join pg_type t on a.atttypid = t.oid
left join pg_attrdef d on a.attrelid=d.adrelid and d.adnum=a.attnum
left join pg_index i on a.attnum=ANY(i.indkey) and c.oid = i.indrelid
where (c.relname='{$tableName}' or c.relname = lower('{$tableName}')) AND a.attnum > 0
order by a.attnum asc;");
$result = $this->query('select fields_name as "Field",fields_type as "Type",fields_not_null as "Null",fields_key_name as "Key",fields_default as "Default",fields_default as "Extra" from table_msg('.$tableName.');');
$info = array();
if($result) {
if($result){
foreach ($result as $key => $val) {
$info[$val['Field']] = array(
'name' => $val['Field'],
'type' => $val['Type'],
'notnull' => (bool) ($val['Null'] == 't'?1:0), // 't' is 'not null'
'default' => $val['Default'],
'primary' => (strtolower($val['Key']) == 't'),
'autoinc' => (strtolower($val['Default']) == "nextval('{$tableName}_id_seq'::regclass)"),
'name' => $val['Field'],
'type' => $val['Type'],
'notnull' => (bool) ($val['Null'] === ''), // not null is empty, null is yes
'default' => $val['Default'],
'primary' => (strtolower($val['Key']) == 'pri'),
'autoinc' => (strtolower($val['Extra']) == 'auto_increment'),
);
}
}
@@ -234,9 +45,10 @@ class Pgsql extends Db{
/**
* 取得数据库的表信息
* @access public
* @return array
*/
public function getTables($dbName='') {
$result = $this->query("select tablename as Tables_in_test from pg_tables where schemaname ='public'");
$result = $this->query("select tablename as Tables_in_test from pg_tables where schemaname ='public'");
$info = array();
foreach ($result as $key => $val) {
$info[$key] = current($val);
@@ -245,44 +57,9 @@ class Pgsql extends Db{
}
/**
* 关闭数据库
* @access public
*/
public function close() {
if($this->_linkID){
pg_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) {
$this->error = $result?pg_result_error($this->queryID): pg_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
* @param string $str SQL指令
* @return string
*/
public function escapeString($str) {
return pg_escape_string($str);
}
/**
* limit
* @access public
* limit分析
* @access protected
* @param mixed $lmit
* @return string
*/
public function parseLimit($limit) {
@@ -297,4 +74,5 @@ class Pgsql extends Db{
}
return $limitStr;
}
}

View File

@@ -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);
}
/**

View File

@@ -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;
}
}

387
Think/Db/Lite.php Normal file
View File

@@ -0,0 +1,387 @@
<?php
// +----------------------------------------------------------------------
// | TOPThink [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2011 http://topthink.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id$
namespace Think\Db;
use Think\Config;
use Think\Debug;
use Think\Log;
use PDO;
class Lite {
// PDO操作实例
protected $PDOStatement = null;
// 当前操作所属的模型名
protected $model = '_think_';
// 当前SQL指令
protected $queryStr = '';
protected $modelSql = [];
// 最后插入ID
protected $lastInsID = null;
// 返回或者影响记录数
protected $numRows = 0;
// 返回字段数
protected $numCols = 0;
// 事务指令数
protected $transTimes = 0;
// 错误信息
protected $error = '';
// 数据库连接ID 支持多个连接
protected $linkID = [];
// 当前连接ID
protected $_linkID = null;
// 当前查询ID
protected $queryID = null;
// 数据库连接参数配置
protected $config = [];
protected $queryTimes = 0;
protected $executeTimes = 0;
// PDO连接参数
protected $options = [
PDO::ATTR_CASE => PDO::CASE_LOWER,
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_ORACLE_NULLS => PDO::NULL_NATURAL,
PDO::ATTR_STRINGIFY_FETCHES => false,
];
/**
* 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(!empty($config)) {
$this->config = $config;
if(empty($this->config['params'])) {
$this->config['params'] = [];
}
$this->config['params'] = $this->options+$this->config['params'];
}
}
/**
* 连接数据库方法
* @access public
*/
public function connect($config='',$linkNum=0) {
if ( !isset($this->linkID[$linkNum]) ) {
if(empty($config)) $config = $this->config;
try{
if(empty($config['dsn'])) {
$config['dsn'] = $config['dbms'].':dbname='.$config['database'].';host='.$config['hostname'];
if(!empty($config['hostport'])) {
$config['dsn'] .= ';port='.$config['hostport'];
}elseif(!empty($config['unix_socket'])){
$config['dsn'] .= ';unix_socket='.$config['unix_socket'];
}
}
$this->linkID[$linkNum] = new PDO( $config['dsn'], $config['username'], $config['password'],$config['params']);
}catch (\PDOException $e) {
throw_exception($e->getMessage());
}
if(!empty($config['charset'])) {
$this->linkID[$linkNum]->exec('SET NAMES '.$config['charset']);
}
// 注销数据库连接配置信息
if(1 != $config['deploy']) $this->config = [];
}
return $this->linkID[$linkNum];
}
/**
* 释放查询结果
* @access public
*/
public function free() {
$this->PDOStatement = null;
}
/**
* 执行查询 返回数据集
* @access public
* @param string $str sql指令
* @return mixed
*/
public function query($str,$bind=[]) {
$this->initConnect(false);
if ( !$this->_linkID ) return false;
$this->queryStr = $str;
//释放前次的查询结果
if ( !empty($this->PDOStatement) ) $this->free();
$this->queryTimes++;
// 记录开始执行时间
Debug::remark('queryStartTime','time');
$this->PDOStatement = $this->_linkID->prepare($str);
if(false === $this->PDOStatement)
throw_exception($this->error());
$result = $this->PDOStatement->execute($bind);
$this->debug();
if ( false === $result ) {
$this->error();
return false;
} else {
return $this->getResult();
}
}
/**
* 执行语句
* @access public
* @param string $str sql指令
* @return integer
*/
public function execute($str,$bind=[]) {
$this->initConnect(true);
if ( !$this->_linkID ) return false;
$this->queryStr = $str;
//释放前次的查询结果
if ( !empty($this->PDOStatement) ) $this->free();
$this->executeTimes++;
// 记录开始执行时间
Debug::remark('queryStartTime','time');
$this->PDOStatement = $this->_linkID->prepare($str);
if(false === $this->PDOStatement) {
throw_exception($this->error());
}
$result = $this->PDOStatement->execute($bind);
$this->debug();
if ( false === $result) {
$this->error();
return false;
} else {
$this->numRows = $this->PDOStatement->rowCount();
if(preg_match("/^\s*(INSERT\s+INTO|REPLACE\s+INTO)\s+/i", $str)) {
$this->lastInsID = $this->getLastInsertId();
}
return $this->numRows;
}
}
/**
* 获取最后插入id
* @access public
* @return integer
*/
public function getLastInsertId() {
return $this->_linkID->lastInsertId();
}
/**
* 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) {
$this->_linkID->beginTransaction();
}
$this->transTimes++;
return ;
}
/**
* 用于非自动提交状态下面的查询提交
* @access public
* @return boolen
*/
public function commit() {
if ($this->transTimes > 0) {
$result = $this->_linkID->commit();
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 事务回滚
* @access public
* @return boolen
*/
public function rollback() {
if ($this->transTimes > 0) {
$result = $this->_linkID->rollback();
$this->transTimes = 0;
if(!$result){
$this->error();
return false;
}
}
return true;
}
/**
* 获得所有的查询数据
* @access private
* @return array
*/
private function getResult() {
//返回数据集
$result = $this->PDOStatement->fetchAll(PDO::FETCH_ASSOC);
$this->numRows = count( $result );
return $result;
}
/**
* 关闭数据库
* @access public
*/
public function close() {
$this->_linkID = null;
}
/**
* 数据库错误信息
* 并显示当前的SQL语句
* @access public
* @return string
*/
public function error() {
if($this->PDOStatement) {
$error = $this->PDOStatement->errorInfo();
$this->error = $error[2];
}else{
$this->error = '';
}
if('' != $this->queryStr){
$this->error .= "\n [ SQL语句 ] : ".$this->queryStr;
}
Log::record($this->error,'ERR');
return $this->error;
}
/**
* 获取最近一次查询的sql语句
* @param string $model 模型名
* @access public
* @return string
*/
public function getLastSql($model='') {
return $model?$this->modelSql[$model]:$this->queryStr;
}
/**
* 获取最近插入的ID
* @access public
* @return string
*/
public function getLastInsID() {
return $this->lastInsID;
}
/**
* 获取最近的错误信息
* @access public
* @return string
*/
public function getError() {
return $this->error;
}
/**
* 设置当前操作模型
* @access public
* @param string $model 模型名
* @return void
*/
public function setModel($model){
$this->model = $model;
}
/**
* 数据库调试 记录当前SQL
* @access protected
*/
protected function debug() {
$this->modelSql[$this->model] = $this->queryStr;
$this->model = '_think_';
// 记录操作结束时间
Debug::remark('queryEndTime','time');
Log::record($this->queryStr.' [ RunTime:'.Debug::getUseTime('queryStartTime','queryEndTime').'s ]','SQL');
}
/**
* 初始化数据库连接
* @access protected
* @param boolean $master 主服务器
* @return void
*/
protected function initConnect($master=true) {
if(1 == $this->config['deploy'])
// 采用分布式数据库
$this->_linkID = $this->multiConnect($master);
else
// 默认单数据库
if ( !$this->_linkID ) $this->_linkID = $this->connect();
}
/**
* 连接分布式服务器
* @access protected
* @param boolean $master 主服务器
* @return void
*/
protected function multiConnect($master=false) {
static $_config = [];
if(empty($_config)) {
// 缓存分布式数据库配置解析
foreach ($this->config as $key=>$val){
$_config[$key] = explode(',',$val);
}
}
// 数据库读写是否分离
if(Config::get('db_rw_separate')){
// 主从式采用读写分离
if($master)
// 主服务器写入
$r = floor(mt_rand(0,Config::get('db_master_num')-1));
else{
if(is_numeric(Config::get('db_slave_no'))) {// 指定服务器读
$r = Config::get('db_slave_no');
}else{
// 读操作连接从服务器
$r = floor(mt_rand(Config::get('db_master_num'),count($_config['hostname'])-1)); // 每次随机连接的数据库
}
}
}else{
// 读写操作不区分服务器
$r = floor(mt_rand(0,count($_config['hostname'])-1)); // 每次随机连接的数据库
}
$db_config = [
'username' => isset($_config['username'][$r])?$_config['username'][$r]:$_config['username'][0],
'password' => isset($_config['password'][$r])?$_config['password'][$r]:$_config['password'][0],
'hostname' => isset($_config['hostname'][$r])?$_config['hostname'][$r]:$_config['hostname'][0],
'hostport' => isset($_config['hostport'][$r])?$_config['hostport'][$r]:$_config['hostport'][0],
'database' => isset($_config['database'][$r])?$_config['database'][$r]:$_config['database'][0],
'dsn' => isset($_config['dsn'][$r])?$_config['dsn'][$r]:$_config['dsn'][0],
'params' => isset($_config['params'][$r])?$_config['params'][$r]:$_config['params'][0],
];
return $this->connect($db_config,$r);
}
/**
* 析构方法
* @access public
*/
public function __destruct() {
// 释放查询
if ($this->queryID){
$this->free();
}
// 关闭连接
$this->close();
}
}