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- <?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>
- // +----------------------------------------------------------------------
- // $Id: Model.class.php 2779 2012-02-24 02:56:57Z liu21st $
- /**
- * ThinkPHP CLI模式Model模型类
- * @category Think
- * @package Think
- * @subpackage Core
- * @author liu21st <liu21st@gmail.com>
- */
- class Model {
- // 当前数据库操作对象
- protected $db = null;
- // 主键名称
- protected $pk = 'id';
- // 数据表前缀
- protected $tablePrefix = '';
- // 模型名称
- protected $name = '';
- // 数据库名称
- protected $dbName = '';
- // 数据表名(不包含表前缀)
- protected $tableName = '';
- // 实际数据表名(包含表前缀)
- protected $trueTableName ='';
- // 最近错误信息
- protected $error = '';
- // 字段信息
- protected $fields = array();
- // 数据信息
- protected $data = array();
- // 查询表达式参数
- protected $options = array();
- protected $_validate = array(); // 自动验证定义
- protected $_auto = array(); // 自动完成定义
- // 是否自动检测数据表字段信息
- protected $autoCheckFields = true;
- // 是否批处理验证
- protected $patchValidate = false;
- /**
- * 架构函数
- * 取得DB类的实例对象 字段检查
- * @param string $name 模型名称
- * @param string $tablePrefix 表前缀
- * @param mixed $connection 数据库连接信息
- * @access public
- */
- public function __construct($name='',$tablePrefix='',$connection='') {
- // 模型初始化
- $this->_initialize();
- // 获取模型名称
- if(!empty($name)) {
- if(strpos($name,'.')) { // 支持 数据库名.模型名的 定义
- list($this->dbName,$this->name) = explode('.',$name);
- }else{
- $this->name = $name;
- }
- }elseif(empty($this->name)){
- $this->name = $this->getModelName();
- }
- if(!empty($tablePrefix)) {
- $this->tablePrefix = $tablePrefix;
- }
- // 设置表前缀
- $this->tablePrefix = $this->tablePrefix?$this->tablePrefix:C('DB_PREFIX');
- // 数据库初始化操作
- // 获取数据库操作对象
- // 当前模型有独立的数据库连接信息
- $this->db(0,empty($this->connection)?$connection:$this->connection);
- // 字段检测
- if(!empty($this->name) && $this->autoCheckFields) $this->_checkTableInfo();
- }
- /**
- * 自动检测数据表信息
- * @access protected
- * @return void
- */
- protected function _checkTableInfo() {
- // 如果不是Model类 自动记录数据表信息
- // 只在第一次执行记录
- if(empty($this->fields)) {
- // 如果数据表字段没有定义则自动获取
- if(C('DB_FIELDS_CACHE')) {
- $db = $this->dbName?$this->dbName:C('DB_NAME');
- $this->fields = F('_fields/'.$db.'.'.$this->name);
- if(!$this->fields) $this->flush();
- }else{
- // 每次都会读取数据表信息
- $this->flush();
- }
- }
- }
- /**
- * 获取字段信息并缓存
- * @access public
- * @return void
- */
- public function flush() {
- // 缓存不存在则查询数据表信息
- $fields = $this->db->getFields($this->getTableName());
- if(!$fields) { // 无法获取字段信息
- return false;
- }
- $this->fields = array_keys($fields);
- $this->fields['_autoinc'] = false;
- foreach ($fields as $key=>$val){
- // 记录字段类型
- $type[$key] = $val['type'];
- if($val['primary']) {
- $this->fields['_pk'] = $key;
- if($val['autoinc']) $this->fields['_autoinc'] = true;
- }
- }
- // 记录字段类型信息
- if(C('DB_FIELDTYPE_CHECK')) $this->fields['_type'] = $type;
- // 2008-3-7 增加缓存开关控制
- if(C('DB_FIELDS_CACHE')){
- // 永久缓存数据表信息
- $db = $this->dbName?$this->dbName:C('DB_NAME');
- F('_fields/'.$db.'.'.$this->name,$this->fields);
- }
- }
- /**
- * 设置数据对象的值
- * @access public
- * @param string $name 名称
- * @param mixed $value 值
- * @return void
- */
- public function __set($name,$value) {
- // 设置数据对象属性
- $this->data[$name] = $value;
- }
- /**
- * 获取数据对象的值
- * @access public
- * @param string $name 名称
- * @return mixed
- */
- public function __get($name) {
- return isset($this->data[$name])?$this->data[$name]:null;
- }
- /**
- * 检测数据对象的值
- * @access public
- * @param string $name 名称
- * @return boolean
- */
- public function __isset($name) {
- return isset($this->data[$name]);
- }
- /**
- * 销毁数据对象的值
- * @access public
- * @param string $name 名称
- * @return void
- */
- public function __unset($name) {
- unset($this->data[$name]);
- }
- /**
- * 利用__call方法实现一些特殊的Model方法
- * @access public
- * @param string $method 方法名称
- * @param array $args 调用参数
- * @return mixed
- */
- public function __call($method,$args) {
- if(in_array(strtolower($method),array('table','where','order','limit','page','alias','having','group','lock','distinct'),true)) {
- // 连贯操作的实现
- $this->options[strtolower($method)] = $args[0];
- return $this;
- }elseif(in_array(strtolower($method),array('count','sum','min','max','avg'),true)){
- // 统计查询的实现
- $field = isset($args[0])?$args[0]:'*';
- return $this->getField(strtoupper($method).'('.$field.') AS tp_'.$method);
- }elseif(strtolower(substr($method,0,5))=='getby') {
- // 根据某个字段获取记录
- $field = parse_name(substr($method,5));
- $where[$field] = $args[0];
- return $this->where($where)->find();
- }else{
- throw_exception(__CLASS__.':'.$method.L('_METHOD_NOT_EXIST_'));
- return;
- }
- }
- // 回调方法 初始化模型
- protected function _initialize() {}
- /**
- * 对保存到数据库的数据进行处理
- * @access protected
- * @param mixed $data 要操作的数据
- * @return boolean
- */
- protected function _facade($data) {
- // 检查非数据字段
- if(!empty($this->fields)) {
- foreach ($data as $key=>$val){
- if(!in_array($key,$this->fields,true)){
- unset($data[$key]);
- }elseif(C('DB_FIELDTYPE_CHECK') && is_scalar($val)) {
- // 字段类型检查
- $this->_parseType($data,$key);
- }
- }
- }
- return $data;
- }
- /**
- * 新增数据
- * @access public
- * @param mixed $data 数据
- * @param array $options 表达式
- * @return mixed
- */
- public function add($data='',$options=array()) {
- if(empty($data)) {
- // 没有传递数据,获取当前数据对象的值
- if(!empty($this->data)) {
- $data = $this->data;
- }else{
- $this->error = L('_DATA_TYPE_INVALID_');
- return false;
- }
- }
- // 分析表达式
- $options = $this->_parseOptions($options);
- // 数据处理
- $data = $this->_facade($data);
- // 写入数据到数据库
- $result = $this->db->insert($data,$options);
- if(false !== $result ) {
- $insertId = $this->getLastInsID();
- if($insertId) {
- // 自增主键返回插入ID
- return $insertId;
- }
- }
- return $result;
- }
- /**
- * 保存数据
- * @access public
- * @param mixed $data 数据
- * @param array $options 表达式
- * @return boolean
- */
- public function save($data='',$options=array()) {
- if(empty($data)) {
- // 没有传递数据,获取当前数据对象的值
- if(!empty($this->data)) {
- $data = $this->data;
- }else{
- $this->error = L('_DATA_TYPE_INVALID_');
- return false;
- }
- }
- // 数据处理
- $data = $this->_facade($data);
- // 分析表达式
- $options = $this->_parseOptions($options);
- if(!isset($options['where']) ) {
- // 如果存在主键数据 则自动作为更新条件
- if(isset($data[$this->getPk()])) {
- $pk = $this->getPk();
- $where[$pk] = $data[$pk];
- $options['where'] = $where;
- unset($data[$pk]);
- }else{
- // 如果没有任何更新条件则不执行
- $this->error = L('_OPERATION_WRONG_');
- return false;
- }
- }
- $result = $this->db->update($data,$options);
- return $result;
- }
- /**
- * 删除数据
- * @access public
- * @param mixed $options 表达式
- * @return mixed
- */
- public function delete($options=array()) {
- if(empty($options) && empty($this->options['where'])) {
- // 如果删除条件为空 则删除当前数据对象所对应的记录
- if(!empty($this->data) && isset($this->data[$this->getPk()]))
- return $this->delete($this->data[$this->getPk()]);
- else
- return false;
- }
- if(is_numeric($options) || is_string($options)) {
- // 根据主键删除记录
- $pk = $this->getPk();
- if(strpos($options,',')) {
- $where[$pk] = array('IN', $options);
- }else{
- $where[$pk] = $options;
- $pkValue = $options;
- }
- $options = array();
- $options['where'] = $where;
- }
- // 分析表达式
- $options = $this->_parseOptions($options);
- $result= $this->db->delete($options);
- // 返回删除记录个数
- return $result;
- }
- /**
- * 查询数据集
- * @access public
- * @param array $options 表达式参数
- * @return mixed
- */
- public function select($options=array()) {
- if(is_string($options) || is_numeric($options)) {
- // 根据主键查询
- $pk = $this->getPk();
- if(strpos($options,',')) {
- $where[$pk] = array('IN',$options);
- }else{
- $where[$pk] = $options;
- }
- $options = array();
- $options['where'] = $where;
- }
- // 分析表达式
- $options = $this->_parseOptions($options);
- $resultSet = $this->db->select($options);
- if(false === $resultSet) {
- return false;
- }
- if(empty($resultSet)) { // 查询结果为空
- return null;
- }
- return $resultSet;
- }
- /**
- * 分析表达式
- * @access proteced
- * @param array $options 表达式参数
- * @return array
- */
- protected function _parseOptions($options=array()) {
- if(is_array($options))
- $options = array_merge($this->options,$options);
- // 查询过后清空sql表达式组装 避免影响下次查询
- $this->options = array();
- if(!isset($options['table']))
- // 自动获取表名
- $options['table'] =$this->getTableName();
- if(!empty($options['alias'])) {
- $options['table'] .= ' '.$options['alias'];
- }
- // 字段类型验证
- if(C('DB_FIELDTYPE_CHECK')) {
- if(isset($options['where']) && is_array($options['where'])) {
- // 对数组查询条件进行字段类型检查
- foreach ($options['where'] as $key=>$val){
- if(in_array($key,$this->fields,true) && is_scalar($val)){
- $this->_parseType($options['where'],$key);
- }
- }
- }
- }
- return $options;
- }
- /**
- * 数据类型检测
- * @access protected
- * @param mixed $data 数据
- * @param string $key 字段名
- * @return void
- */
- protected function _parseType(&$data,$key) {
- $fieldType = strtolower($this->fields['_type'][$key]);
- if(false !== strpos($fieldType,'int')) {
- $data[$key] = intval($data[$key]);
- }elseif(false !== strpos($fieldType,'float') || false !== strpos($fieldType,'double')){
- $data[$key] = floatval($data[$key]);
- }elseif(false !== strpos($fieldType,'bool')){
- $data[$key] = (bool)$data[$key];
- }
- }
- /**
- * 查询数据
- * @access public
- * @param mixed $options 表达式参数
- * @return mixed
- */
- public function find($options=array()) {
- if(is_numeric($options) || is_string($options)) {
- $where[$this->getPk()] =$options;
- $options = array();
- $options['where'] = $where;
- }
- // 总是查找一条记录
- $options['limit'] = 1;
- // 分析表达式
- $options = $this->_parseOptions($options);
- $resultSet = $this->db->select($options);
- if(false === $resultSet) {
- return false;
- }
- if(empty($resultSet)) {// 查询结果为空
- return null;
- }
- $this->data = $resultSet[0];
- return $this->data;
- }
- /**
- * 设置记录的某个字段值
- * 支持使用数据库字段和方法
- * @access public
- * @param string|array $field 字段名
- * @param string|array $value 字段值
- * @return boolean
- */
- public function setField($field,$value) {
- if(is_array($field)) {
- $data = $field;
- }else{
- $data[$field] = $value;
- }
- return $this->save($data);
- }
- /**
- * 字段值增长
- * @access public
- * @param string $field 字段名
- * @param integer $step 增长值
- * @return boolean
- */
- public function setInc($field,$step=1) {
- return $this->setField($field,array('exp',$field.'+'.$step));
- }
- /**
- * 字段值减少
- * @access public
- * @param string $field 字段名
- * @param integer $step 减少值
- * @return boolean
- */
- public function setDec($field,$step=1) {
- return $this->setField($field,array('exp',$field.'-'.$step));
- }
- /**
- * 获取一条记录的某个字段值
- * @access public
- * @param string $field 字段名
- * @param string $spea 字段数据间隔符号
- * @return mixed
- */
- public function getField($field,$sepa=null) {
- $options['field'] = $field;
- $options = $this->_parseOptions($options);
- if(strpos($field,',')) { // 多字段
- $resultSet = $this->db->select($options);
- if(!empty($resultSet)) {
- $_field = explode(',', $field);
- $field = array_keys($resultSet[0]);
- $move = $_field[0]==$_field[1]?false:true;
- $key = array_shift($field);
- $key2 = array_shift($field);
- $cols = array();
- $count = count($_field);
- foreach ($resultSet as $result){
- $name = $result[$key];
- if($move) { // 删除键值记录
- unset($result[$key]);
- }
- if(2==$count) {
- $cols[$name] = $result[$key2];
- }else{
- $cols[$name] = is_null($sepa)?$result:implode($sepa,$result);
- }
- }
- return $cols;
- }
- }else{ // 查找一条记录
- $options['limit'] = 1;
- $result = $this->db->select($options);
- if(!empty($result)) {
- return reset($result[0]);
- }
- }
- return null;
- }
- /**
- * 创建数据对象 但不保存到数据库
- * @access public
- * @param mixed $data 创建数据
- * @return mixed
- */
- public function create($data='') {
- // 如果没有传值默认取POST数据
- if(empty($data)) {
- $data = $_POST;
- }elseif(is_object($data)){
- $data = get_object_vars($data);
- }
- // 验证数据
- if(empty($data) || !is_array($data)) {
- $this->error = L('_DATA_TYPE_INVALID_');
- return false;
- }
- // 验证完成生成数据对象
- if($this->autoCheckFields) { // 开启字段检测 则过滤非法字段数据
- $vo = array();
- foreach ($this->fields as $key=>$name){
- if(substr($key,0,1)=='_') continue;
- $val = isset($data[$name])?$data[$name]:null;
- //保证赋值有效
- if(!is_null($val)){
- $vo[$name] = (MAGIC_QUOTES_GPC && is_string($val))? stripslashes($val) : $val;
- }
- }
- }else{
- $vo = $data;
- }
- // 赋值当前数据对象
- $this->data = $vo;
- // 返回创建的数据以供其他调用
- return $vo;
- }
- /**
- * SQL查询
- * @access public
- * @param mixed $sql SQL指令
- * @return mixed
- */
- public function query($sql) {
- if(!empty($sql)) {
- if(strpos($sql,'__TABLE__'))
- $sql = str_replace('__TABLE__',$this->getTableName(),$sql);
- return $this->db->query($sql);
- }else{
- return false;
- }
- }
- /**
- * 执行SQL语句
- * @access public
- * @param string $sql SQL指令
- * @return false | integer
- */
- public function execute($sql) {
- if(!empty($sql)) {
- if(strpos($sql,'__TABLE__'))
- $sql = str_replace('__TABLE__',$this->getTableName(),$sql);
- return $this->db->execute($sql);
- }else {
- return false;
- }
- }
- /**
- * 切换当前的数据库连接
- * @access public
- * @param integer $linkNum 连接序号
- * @param mixed $config 数据库连接信息
- * @param array $params 模型参数
- * @return Model
- */
- public function db($linkNum,$config='',$params=array()){
- static $_db = array();
- if(!isset($_db[$linkNum])) {
- // 创建一个新的实例
- if(!empty($config) && false === strpos($config,'/')) { // 支持读取配置参数
- $config = C($config);
- }
- $_db[$linkNum] = Db::getInstance($config);
- }elseif(NULL === $config){
- $_db[$linkNum]->close(); // 关闭数据库连接
- unset($_db[$linkNum]);
- return ;
- }
- if(!empty($params)) {
- if(is_string($params)) parse_str($params,$params);
- foreach ($params as $name=>$value){
- $this->setProperty($name,$value);
- }
- }
- // 切换数据库连接
- $this->db = $_db[$linkNum];
- return $this;
- }
- /**
- * 得到当前的数据对象名称
- * @access public
- * @return string
- */
- public function getModelName() {
- if(empty($this->name))
- $this->name = substr(get_class($this),0,-5);
- return $this->name;
- }
- /**
- * 得到完整的数据表名
- * @access public
- * @return string
- */
- public function getTableName() {
- if(empty($this->trueTableName)) {
- $tableName = !empty($this->tablePrefix) ? $this->tablePrefix : '';
- if(!empty($this->tableName)) {
- $tableName .= $this->tableName;
- }else{
- $tableName .= parse_name($this->name);
- }
- $this->trueTableName = strtolower($tableName);
- }
- return (!empty($this->dbName)?$this->dbName.'.':'').$this->trueTableName;
- }
- /**
- * 启动事务
- * @access public
- * @return void
- */
- public function startTrans() {
- $this->commit();
- $this->db->startTrans();
- return ;
- }
- /**
- * 提交事务
- * @access public
- * @return boolean
- */
- public function commit() {
- return $this->db->commit();
- }
- /**
- * 事务回滚
- * @access public
- * @return boolean
- */
- public function rollback() {
- return $this->db->rollback();
- }
- /**
- * 返回模型的错误信息
- * @access public
- * @return string
- */
- public function getError(){
- return $this->error;
- }
- /**
- * 返回数据库的错误信息
- * @access public
- * @return string
- */
- public function getDbError() {
- return $this->db->getError();
- }
- /**
- * 返回最后插入的ID
- * @access public
- * @return string
- */
- public function getLastInsID() {
- return $this->db->getLastInsID();
- }
- /**
- * 返回最后执行的sql语句
- * @access public
- * @return string
- */
- public function getLastSql() {
- return $this->db->getLastSql();
- }
- // 鉴于getLastSql比较常用 增加_sql 别名
- public function _sql(){
- return $this->getLastSql();
- }
- /**
- * 获取主键名称
- * @access public
- * @return string
- */
- public function getPk() {
- return isset($this->fields['_pk'])?$this->fields['_pk']:$this->pk;
- }
- /**
- * 获取数据表字段信息
- * @access public
- * @return array
- */
- public function getDbFields(){
- if($this->fields) {
- $fields = $this->fields;
- unset($fields['_autoinc'],$fields['_pk'],$fields['_type']);
- return $fields;
- }
- return false;
- }
- /**
- * 指定查询字段 支持字段排除
- * @access public
- * @param mixed $field
- * @param boolean $except 是否排除
- * @return Model
- */
- public function field($field,$except=false){
- if($except) {// 字段排除
- if(is_string($field)) {
- $field = explode(',',$field);
- }
- $fields = $this->getDbFields();
- $field = $fields?array_diff($fields,$field):$field;
- }
- $this->options['field'] = $field;
- return $this;
- }
- /**
- * 设置数据对象值
- * @access public
- * @param mixed $data 数据
- * @return Model
- */
- public function data($data){
- if(is_object($data)){
- $data = get_object_vars($data);
- }elseif(is_string($data)){
- parse_str($data,$data);
- }elseif(!is_array($data)){
- throw_exception(L('_DATA_TYPE_INVALID_'));
- }
- $this->data = $data;
- return $this;
- }
- /**
- * 查询SQL组装 join
- * @access public
- * @param mixed $join
- * @return Model
- */
- public function join($join) {
- if(is_array($join))
- $this->options['join'] = $join;
- else
- $this->options['join'][] = $join;
- return $this;
- }
- /**
- * 查询SQL组装 union
- * @access public
- * @param array $union
- * @return Model
- */
- public function union($union) {
- if(empty($union)) return $this;
- // 转换union表达式
- if($union instanceof Model) {
- $options = $union->getProperty('options');
- if(!isset($options['table'])){
- // 自动获取表名
- $options['table'] =$union->getTableName();
- }
- if(!isset($options['field'])) {
- $options['field'] =$this->options['field'];
- }
- }elseif(is_object($union)) {
- $options = get_object_vars($union);
- }elseif(!is_array($union)){
- throw_exception(L('_DATA_TYPE_INVALID_'));
- }
- $this->options['union'][] = $options;
- return $this;
- }
- /**
- * 设置模型的属性值
- * @access public
- * @param string $name 名称
- * @param mixed $value 值
- * @return Model
- */
- public function setProperty($name,$value) {
- if(property_exists($this,$name))
- $this->$name = $value;
- return $this;
- }
- /**
- * 获取模型的属性值
- * @access public
- * @param string $name 名称
- * @return mixed
- */
- public function getProperty($name){
- if(property_exists($this,$name))
- return $this->$name;
- else
- return NULL;
- }
- }
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