mirror of
https://gitee.com/fastadminnet/framework.git
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1568 lines
47 KiB
PHP
1568 lines
47 KiB
PHP
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2016 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think\db;
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use PDO;
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use think\Cache;
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use think\Collection;
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use think\Config;
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use think\Db;
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use think\Exception;
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use think\exception\DbException;
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use think\Loader;
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use think\Model;
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use think\model\Relation;
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use think\Paginator;
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class Query
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{
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// 数据库Connection对象实例
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protected $connection;
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// 数据库驱动类型
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protected $driver;
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// 查询参数
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protected $options = [];
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// 参数绑定
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protected $bind = [];
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/**
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* 架构函数
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* @access public
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* @param object|string $connection 数据库对象实例
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* @throws Exception
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*/
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public function __construct($connection = '')
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{
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$this->connection = $connection ?: Db::connect([], true);
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$this->driver = $this->connection->getDriverName();
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}
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/**
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* 利用__call方法实现一些特殊的Model方法
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* @access public
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* @param string $method 方法名称
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* @param array $args 调用参数
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* @return mixed
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* @throws DbException
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* @throws Exception
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*/
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public function __call($method, $args)
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{
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if (strtolower(substr($method, 0, 5)) == 'getby') {
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// 根据某个字段获取记录
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$field = Loader::parseName(substr($method, 5));
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$where[$field] = $args[0];
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return $this->where($where)->find();
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} elseif (strtolower(substr($method, 0, 10)) == 'getfieldby') {
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// 根据某个字段获取记录的某个值
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$name = Loader::parseName(substr($method, 10));
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$where[$name] = $args[0];
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return $this->where($where)->value($args[1]);
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} else {
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throw new Exception(__CLASS__ . ':' . $method . ' method not exist');
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}
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}
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/**
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* 获取当前的builder实例对象
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* @access protected
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* @return \think\db\Builder
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*/
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protected function builder()
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{
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static $builder = [];
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$driver = $this->driver;
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if (!isset($builder[$driver])) {
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$class = '\\think\\db\\builder\\' . ucfirst($driver);
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$builder[$driver] = new $class($this->connection);
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}
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// 设置当前查询对象
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$builder[$driver]->setQuery($this);
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return $builder[$driver];
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}
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/**
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* 得到某个字段的值
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* @access public
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* @param string $field 字段名
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* @return mixed
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*/
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public function value($field)
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{
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$result = false;
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if (!empty($this->options['cache'])) {
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// 判断查询缓存
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$cache = $this->options['cache'];
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$key = is_string($cache['key']) ? $cache['key'] : md5($field . serialize($this->options));
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$result = Cache::get($key);
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}
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if (!$result) {
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if (isset($this->options['field'])) {
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unset($this->options['field']);
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}
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$pdo = $this->field($field)->fetchPdo(true)->find();
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$result = $pdo->fetchColumn();
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if (isset($cache)) {
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// 缓存数据
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Cache::set($key, $result, $cache['expire']);
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}
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} else {
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// 清空查询条件
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$this->options = [];
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}
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return $result;
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}
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/**
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* 得到某个列的数组
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* @access public
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* @param string $field 字段名 多个字段用逗号分隔
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* @param string $key 索引
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* @return array
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*/
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public function column($field, $key = '')
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{
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$result = false;
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if (!empty($this->options['cache'])) {
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// 判断查询缓存
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$cache = $this->options['cache'];
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$guid = is_string($cache['key']) ? $cache['key'] : md5($field . serialize($this->options));
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$result = Cache::get($guid);
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}
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if (!$result) {
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if (isset($this->options['field'])) {
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unset($this->options['field']);
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}
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if ($key && '*' != $field) {
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$field = $key . ',' . $field;
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}
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$pdo = $this->field($field)->fetchPdo(true)->select();
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if (1 == $pdo->columnCount()) {
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$result = $pdo->fetchAll(PDO::FETCH_COLUMN);
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} else {
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$resultSet = $pdo->fetchAll(PDO::FETCH_ASSOC);
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if ($resultSet) {
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$fields = array_keys($resultSet[0]);
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$count = count($fields);
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$key1 = array_shift($fields);
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$key2 = $fields ? array_shift($fields) : '';
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$key = $key ?: $key1;
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foreach ($resultSet as $val) {
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if ($count > 2) {
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$result[$val[$key]] = $val;
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} elseif (2 == $count) {
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$result[$val[$key]] = $val[$key2];
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}
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}
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} else {
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$result = [];
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}
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}
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if (isset($cache) && isset($guid)) {
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// 缓存数据
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Cache::set($guid, $result, $cache['expire']);
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}
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} else {
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// 清空查询条件
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$this->options = [];
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}
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return $result;
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}
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/**
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* COUNT查询
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* @access public
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* @param string $field 字段名
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* @return integer
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*/
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public function count($field = '*')
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{
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return $this->value('COUNT(' . $field . ') AS tp_count');
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}
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/**
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* SUM查询
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* @access public
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* @param string $field 字段名
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* @return integer
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*/
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public function sum($field = '*')
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{
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$result = $this->value('SUM(' . $field . ') AS tp_sum');
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return is_null($result) ? 0 : $result;
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}
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/**
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* MIN查询
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* @access public
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* @param string $field 字段名
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* @return integer
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*/
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public function min($field = '*')
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{
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$result = $this->value('MIN(' . $field . ') AS tp_min');
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return is_null($result) ? 0 : $result;
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}
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/**
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* MAX查询
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* @access public
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* @param string $field 字段名
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* @return integer
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*/
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public function max($field = '*')
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{
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$result = $this->value('MAX(' . $field . ') AS tp_max');
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return is_null($result) ? 0 : $result;
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}
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/**
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* AVG查询
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* @access public
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* @param string $field 字段名
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* @return integer
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*/
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public function avg($field = '*')
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{
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$result = $this->value('AVG(' . $field . ') AS tp_avg');
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return is_null($result) ? 0 : $result;
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}
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/**
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* 设置记录的某个字段值
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* 支持使用数据库字段和方法
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* @access public
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* @param string|array $field 字段名
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* @param string $value 字段值
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* @return integer
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*/
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public function setField($field, $value = '')
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{
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if (is_array($field)) {
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$data = $field;
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} else {
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$data[$field] = $value;
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}
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return $this->update($data);
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}
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/**
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* 字段值(延迟)增长
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* @access public
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* @param string $field 字段名
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* @param integer $step 增长值
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* @param integer $lazyTime 延时时间(s)
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* @return integer|true
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* @throws \think\Exception
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*/
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public function setInc($field, $step = 1, $lazyTime = 0)
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{
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$condition = !empty($this->options['where']) ? $this->options['where'] : [];
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if (empty($condition)) {
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// 没有条件不做任何更新
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throw new Exception('no data to update');
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}
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if ($lazyTime > 0) {
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// 延迟写入
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$guid = md5($this->getTable() . '_' . $field . '_' . serialize($condition));
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$step = $this->lazyWrite($guid, $step, $lazyTime);
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if (empty($step)) {
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return true; // 等待下次写入
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}
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}
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return $this->setField($field, ['exp', $field . '+' . $step]);
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}
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/**
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* 字段值（延迟）减少
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* @access public
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* @param string $field 字段名
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* @param integer $step 减少值
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* @param integer $lazyTime 延时时间(s)
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* @return integer|true
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* @throws \think\Exception
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*/
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public function setDec($field, $step = 1, $lazyTime = 0)
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{
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$condition = !empty($this->options['where']) ? $this->options['where'] : [];
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if (empty($condition)) {
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// 没有条件不做任何更新
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throw new Exception('no data to update');
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}
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if ($lazyTime > 0) {
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// 延迟写入
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$guid = md5($this->getTable() . '_' . $field . '_' . serialize($condition));
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$step = $this->lazyWrite($guid, -$step, $lazyTime);
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if (empty($step)) {
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return true; // 等待下次写入
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}
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}
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return $this->setField($field, ['exp', $field . '-' . $step]);
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}
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/**
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* 延时更新检查 返回false表示需要延时
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* 否则返回实际写入的数值
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* @access public
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* @param string $guid 写入标识
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* @param integer $step 写入步进值
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* @param integer $lazyTime 延时时间(s)
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* @return false|integer
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*/
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protected function lazyWrite($guid, $step, $lazyTime)
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{
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if (false !== ($value = Cache::get($guid))) {
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// 存在缓存写入数据
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if (NOW_TIME > Cache::get($guid . '_time') + $lazyTime) {
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// 延时更新时间到了，删除缓存数据 并实际写入数据库
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Cache::rm($guid);
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Cache::rm($guid . '_time');
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return $value + $step;
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} else {
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// 追加数据到缓存
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Cache::set($guid, $value + $step, 0);
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return false;
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}
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} else {
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// 没有缓存数据
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Cache::set($guid, $step, 0);
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// 计时开始
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Cache::set($guid . '_time', NOW_TIME, 0);
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return false;
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}
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}
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/**
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* 查询SQL组装 join
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* @access public
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* @param mixed $join 关联的表名
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* @param mixed $condition 条件
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* @param string $type JOIN类型
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* @return $this
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*/
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public function join($join, $condition = null, $type = 'INNER')
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{
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if (empty($condition)) {
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// 如果为组数，则循环调用join
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foreach ($join as $key => $value) {
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if (is_array($value) && 2 <= count($value)) {
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$this->join($value[0], $value[1], isset($value[2]) ? $value[2] : $type);
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}
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}
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} else {
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$prefix = $this->connection->getConfig('prefix');
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// 传入的表名为数组
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if (is_array($join)) {
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if (0 !== $key = key($join)) {
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// 设置了键名则键名为表名，键值作为表的别名
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$table = $key . ' ' . array_shift($join);
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} else {
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$table = array_shift($join);
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}
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if (count($join)) {
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// 有设置第二个元素则把第二元素作为表前缀
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$table = (string) current($join) . $table;
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} elseif (false === strpos($table, '.')) {
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// 加上默认的表前缀
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$table = $prefix . $table;
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}
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} else {
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$join = trim($join);
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if (0 === strpos($join, '__')) {
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$table = $this->connection->parseSqlTable($join);
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} elseif (false === strpos($join, '(') && false === strpos($join, '.') && !empty($prefix) && 0 !== strpos($join, $prefix)) {
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// 传入的表名中不带有'('并且不以默认的表前缀开头时加上默认的表前缀
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$table = $prefix . $join;
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} else {
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$table = $join;
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}
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}
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if (is_array($condition)) {
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$condition = implode(' AND ', $condition);
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}
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$this->options['join'][] = strtoupper($type) . ' JOIN ' . $table . ' ON ' . $condition;
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}
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return $this;
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}
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/**
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* 查询SQL组装 union
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* @access public
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* @param mixed $union
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* @param boolean $all
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* @return $this
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*/
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public function union($union, $all = false)
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{
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$this->options['union']['type'] = $all ? 'UNION ALL' : 'UNION';
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if (is_array($union)) {
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$this->options['union'] = array_merge($this->options['union'], $union);
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} else {
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$this->options['union'][] = $union;
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}
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return $this;
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}
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/**
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* 指定查询字段 支持字段排除和指定数据表
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* @access public
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* @param mixed $field
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* @param boolean $except 是否排除
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* @param string $tableName 数据表名
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* @param string $prefix 字段前缀
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* @param string $alias 别名前缀
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* @return $this
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*/
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public function field($field, $except = false, $tableName = '', $prefix = '', $alias = '')
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{
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if (empty($field)) {
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return $this;
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}
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if (is_string($field)) {
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$field = explode(',', $field);
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}
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if (true === $field) {
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// 获取全部字段
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$fields = $this->getTableInfo($tableName, 'fields');
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$field = $fields ?: '*';
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} elseif ($except) {
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// 字段排除
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$fields = $this->getTableInfo($tableName, 'fields');
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$field = $fields ? array_diff($fields, $field) : $field;
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}
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if ($tableName) {
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// 添加统一的前缀
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$prefix = $prefix ?: $tableName;
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foreach ($field as $key => $val) {
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if (is_numeric($key)) {
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$val = $prefix . '.' . $val . ($alias ? ' AS ' . $alias . $val : '');
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}
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$field[$key] = $val;
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}
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}
|
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|
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if (isset($this->options['field'])) {
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$field = array_merge($this->options['field'], $field);
|
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}
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$this->options['field'] = $field;
|
||
return $this;
|
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}
|
||
|
||
/**
|
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* 指定查询条件
|
||
* @access public
|
||
* @param mixed $field 查询字段
|
||
* @param mixed $op 查询表达式
|
||
* @param mixed $condition 查询条件
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||
* @return $this
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*/
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||
public function where($field, $op = null, $condition = null)
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{
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$param = func_get_args();
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array_shift($param);
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$this->parseWhereExp('AND', $field, $op, $condition, $param);
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||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定查询条件
|
||
* @access public
|
||
* @param mixed $field 查询字段
|
||
* @param mixed $op 查询表达式
|
||
* @param mixed $condition 查询条件
|
||
* @return $this
|
||
*/
|
||
public function whereOr($field, $op = null, $condition = null)
|
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{
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$param = func_get_args();
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array_shift($param);
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$this->parseWhereExp('OR', $field, $op, $condition, $param);
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return $this;
|
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}
|
||
|
||
/**
|
||
* 分析查询表达式
|
||
* @access public
|
||
* @param string|array|\Closure $field 查询字段
|
||
* @param mixed $op 查询表达式
|
||
* @param mixed $condition 查询条件
|
||
* @param string $operator and or
|
||
* @return void
|
||
*/
|
||
protected function parseWhereExp($operator, $field, $op, $condition, $param = [])
|
||
{
|
||
if ($field instanceof \Closure) {
|
||
call_user_func_array($field, [ & $this]);
|
||
return;
|
||
}
|
||
|
||
if (is_string($field) && !empty($this->options['via'])) {
|
||
$field = $this->options['via'] . '.' . $field;
|
||
}
|
||
if (is_string($field) && preg_match('/[,=\>\<\'\"\(\s]/', $field)) {
|
||
$where[] = ['exp', $field];
|
||
if (is_array($op)) {
|
||
// 参数绑定
|
||
$this->bind($op);
|
||
}
|
||
} elseif (is_null($op) && is_null($condition)) {
|
||
if (is_array($field)) {
|
||
// 数组批量查询
|
||
$where = $field;
|
||
} elseif ($field) {
|
||
// 字符串查询
|
||
$where[] = ['exp', $field];
|
||
} else {
|
||
$where = '';
|
||
}
|
||
} elseif (is_array($op)) {
|
||
$where[$field] = $param;
|
||
} elseif (in_array(strtolower($op), ['null', 'notnull', 'not null'])) {
|
||
// null查询
|
||
$where[$field] = [$op, ''];
|
||
} elseif (is_null($condition)) {
|
||
// 字段相等查询
|
||
$where[$field] = ['eq', $op];
|
||
} else {
|
||
$where[$field] = [$op, $condition];
|
||
}
|
||
if (!empty($where)) {
|
||
if (!isset($this->options['where'][$operator])) {
|
||
$this->options['where'][$operator] = [];
|
||
}
|
||
$this->options['where'][$operator] = array_merge($this->options['where'][$operator], $where);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 指定查询条件
|
||
* @access public
|
||
* @param mixed $where 条件表达式
|
||
* @return $this
|
||
*/
|
||
public function whereExist($where)
|
||
{
|
||
$this->options['where']['AND'][] = ['EXISTS', $where];
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定查询条件
|
||
* @access public
|
||
* @param mixed $where 条件表达式
|
||
* @return $this
|
||
*/
|
||
public function whereOrExist($where)
|
||
{
|
||
$this->options['where']['OR'][] = ['EXISTS', $where];
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定查询条件
|
||
* @access public
|
||
* @param mixed $where 条件表达式
|
||
* @return $this
|
||
*/
|
||
public function whereNotExist($where)
|
||
{
|
||
$this->options['where']['AND'][] = ['NOT EXISTS', $where];
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定查询条件
|
||
* @access public
|
||
* @param mixed $where 条件表达式
|
||
* @return $this
|
||
*/
|
||
public function whereOrNotExist($where)
|
||
{
|
||
$this->options['where']['OR'][] = ['NOT EXISTS', $where];
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定查询数量
|
||
* @access public
|
||
* @param mixed $offset 起始位置
|
||
* @param mixed $length 查询数量
|
||
* @return $this
|
||
*/
|
||
public function limit($offset, $length = null)
|
||
{
|
||
if (is_null($length) && strpos($offset, ',')) {
|
||
list($offset, $length) = explode(',', $offset);
|
||
}
|
||
$this->options['limit'] = intval($offset) . ($length ? ',' . intval($length) : '');
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定分页
|
||
* @access public
|
||
* @param mixed $page 页数
|
||
* @param mixed $listRows 每页数量
|
||
* @return $this
|
||
*/
|
||
public function page($page, $listRows = null)
|
||
{
|
||
if (is_null($listRows) && strpos($page, ',')) {
|
||
list($page, $listRows) = explode(',', $page);
|
||
}
|
||
$this->options['page'] = [intval($page), intval($listRows)];
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 分页查询
|
||
* @param int $listRows 每页数量
|
||
* @param bool $simple 简洁模式
|
||
* @param array $config 配置参数
|
||
* page:当前页,
|
||
* path:url路径,
|
||
* query:url额外参数,
|
||
* fragment:url锚点,
|
||
* var_page:分页变量,
|
||
* type:分页类名,
|
||
* namespace:分页类命名空间
|
||
* @return \think\paginator\Collection
|
||
* @throws DbException
|
||
*/
|
||
public function paginate($listRows = 15, $simple = false, $config = [])
|
||
{
|
||
$config = array_merge(Config::get('paginate'), $config);
|
||
|
||
$class = (!empty($config['namespace']) ? $config['namespace'] : '\\think\\paginator\\driver\\') . ucwords($config['type']);
|
||
|
||
$page = isset($config['page']) ? (int) $config['page'] : call_user_func([
|
||
$class,
|
||
'getCurrentPage',
|
||
], $config['var_page']);
|
||
|
||
$page = $page < 1 ? 1 : $page;
|
||
|
||
$config['path'] = isset($config['path']) ? $config['path'] : call_user_func([$class, 'getCurrentPath']);
|
||
|
||
/** @var Paginator $paginator */
|
||
if (!$simple) {
|
||
$options = $this->getOptions();
|
||
$total = $this->count();
|
||
$results = $this->options($options)->page($page, $listRows)->select();
|
||
$paginator = new $class($results, $listRows, $page, $simple, $total, $config);
|
||
} else {
|
||
$results = $this->limit(($page - 1) * $listRows, $listRows + 1)->select();
|
||
$paginator = new $class($results, $listRows, $page, $simple, null, $config);
|
||
}
|
||
|
||
return $paginator->items();
|
||
}
|
||
|
||
/**
|
||
* 指定数据表
|
||
* @access public
|
||
* @param string $table 表名
|
||
* @return $this
|
||
*/
|
||
public function table($table)
|
||
{
|
||
$this->options['table'] = $table;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* USING支持 用于多表删除
|
||
* @access public
|
||
* @param mixed $using
|
||
* @return $this
|
||
*/
|
||
public function using($using)
|
||
{
|
||
$this->options['using'] = $using;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定排序 order('id','desc') 或者 order(['id'=>'desc','create_time'=>'desc'])
|
||
* @access public
|
||
* @param string|array $field 排序字段
|
||
* @param string $order 排序
|
||
* @return $this
|
||
*/
|
||
public function order($field, $order = null)
|
||
{
|
||
if (!empty($field)) {
|
||
if (is_string($field)) {
|
||
if (!empty($this->options['via'])) {
|
||
$field = $this->options['via'] . '.' . $field;
|
||
}
|
||
$field = empty($order) ? $field : [$field => $order];
|
||
} elseif (!empty($this->options['via'])) {
|
||
foreach ($field as $key => $val) {
|
||
if (is_numeric($key)) {
|
||
$field[$key] = $this->options['via'] . '.' . $val;
|
||
} else {
|
||
$field[$this->options['via'] . '.' . $key] = $val;
|
||
unset($field[$key]);
|
||
}
|
||
}
|
||
}
|
||
$this->options['order'] = $field;
|
||
}
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 查询缓存
|
||
* @access public
|
||
* @param mixed $key
|
||
* @param integer $expire
|
||
* @return $this
|
||
*/
|
||
public function cache($key = true, $expire = null)
|
||
{
|
||
// 增加快捷调用方式 cache(10) 等同于 cache(true, 10)
|
||
if (is_numeric($key) && is_null($expire)) {
|
||
$expire = $key;
|
||
$key = true;
|
||
}
|
||
if (false !== $key) {
|
||
$this->options['cache'] = ['key' => $key, 'expire' => $expire];
|
||
}
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定group查询
|
||
* @access public
|
||
* @param string $group GROUP
|
||
* @return $this
|
||
*/
|
||
public function group($group)
|
||
{
|
||
$this->options['group'] = $group;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定having查询
|
||
* @access public
|
||
* @param string $having having
|
||
* @return $this
|
||
*/
|
||
public function having($having)
|
||
{
|
||
$this->options['having'] = $having;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定查询lock
|
||
* @access public
|
||
* @param boolean $lock 是否lock
|
||
* @return $this
|
||
*/
|
||
public function lock($lock = false)
|
||
{
|
||
$this->options['lock'] = $lock;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定distinct查询
|
||
* @access public
|
||
* @param string $distinct 是否唯一
|
||
* @return $this
|
||
*/
|
||
public function distinct($distinct)
|
||
{
|
||
$this->options['distinct'] = $distinct;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定数据表别名
|
||
* @access public
|
||
* @param string $alias 数据表别名
|
||
* @return $this
|
||
*/
|
||
public function alias($alias)
|
||
{
|
||
$this->options['alias'] = $alias;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定强制索引
|
||
* @access public
|
||
* @param string $force 索引名称
|
||
* @return $this
|
||
*/
|
||
public function force($force)
|
||
{
|
||
$this->options['force'] = $force;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 查询注释
|
||
* @access public
|
||
* @param string $comment 注释
|
||
* @return $this
|
||
*/
|
||
public function comment($comment)
|
||
{
|
||
$this->options['comment'] = $comment;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 获取执行的SQL语句
|
||
* @access public
|
||
* @param boolean $fetch 是否返回sql
|
||
* @return $this
|
||
*/
|
||
public function fetchSql($fetch = true)
|
||
{
|
||
$this->options['fetch_sql'] = $fetch;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 不主动获取数据集
|
||
* @access public
|
||
* @param bool $pdo 是否返回 PDOStatement 对象
|
||
* @return $this
|
||
*/
|
||
public function fetchPdo($pdo = true)
|
||
{
|
||
$this->options['fetch_pdo'] = $pdo;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 设置从主服务器读取数据
|
||
* @access public
|
||
* @return $this
|
||
*/
|
||
public function master()
|
||
{
|
||
$this->options['master'] = true;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 设置是否严格检查字段名
|
||
* @access public
|
||
* @param bool $strict 是否严格检查字段
|
||
* @return $this
|
||
*/
|
||
public function strict($strict = true)
|
||
{
|
||
$this->options['strict'] = $strict;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 设置查询数据不存在是否抛出异常
|
||
* @access public
|
||
* @param bool $fail 是否严格检查字段
|
||
* @return $this
|
||
*/
|
||
public function failException($fail = true)
|
||
{
|
||
$this->options['fail'] = $fail;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 指定当前模型
|
||
* @access public
|
||
* @param string $model 模型类名称
|
||
* @return $this
|
||
*/
|
||
public function model($model)
|
||
{
|
||
$this->options['model'] = $model;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 设置当前name
|
||
* @access public
|
||
* @param string $name
|
||
* @return $this
|
||
*/
|
||
public function name($name)
|
||
{
|
||
$this->options['name'] = $name;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 得到当前的数据表
|
||
* @access public
|
||
* @return string
|
||
*/
|
||
public function getTable()
|
||
{
|
||
if (empty($this->options['table'])) {
|
||
$tableName = $this->connection->getConfig('prefix');
|
||
if (isset($this->options['name'])) {
|
||
$tableName .= Loader::parseName($this->options['name']);
|
||
}
|
||
} else {
|
||
$tableName = $this->options['table'];
|
||
}
|
||
return $tableName;
|
||
}
|
||
|
||
/**
|
||
* 获取数据表信息
|
||
* @access public
|
||
* @param string $fetch 获取信息类型 包括 fields type bind pk
|
||
* @param string $tableName 数据表名 留空自动获取
|
||
* @return mixed
|
||
*/
|
||
public function getTableInfo($tableName = '', $fetch = '')
|
||
{
|
||
static $_info = [];
|
||
if (!$tableName) {
|
||
$tableName = $this->getTable();
|
||
}
|
||
if (is_array($tableName)) {
|
||
$tableName = key($tableName) ?: current($tableName);
|
||
}
|
||
if (strpos($tableName, ',')) {
|
||
// 多表不获取字段信息
|
||
return false;
|
||
}
|
||
$guid = md5($tableName);
|
||
if (!isset($_info[$guid])) {
|
||
$info = $this->connection->getFields($tableName);
|
||
$fields = array_keys($info);
|
||
$bind = $type = [];
|
||
foreach ($info as $key => $val) {
|
||
// 记录字段类型
|
||
$type[$key] = $val['type'];
|
||
if (preg_match('/(int|double|float|decimal|real|numeric|serial)/is', $val['type'])) {
|
||
$bind[$key] = PDO::PARAM_INT;
|
||
} elseif (preg_match('/bool/is', $val['type'])) {
|
||
$bind[$key] = PDO::PARAM_BOOL;
|
||
} else {
|
||
$bind[$key] = PDO::PARAM_STR;
|
||
}
|
||
if (!empty($val['primary'])) {
|
||
$pk[] = $key;
|
||
}
|
||
}
|
||
if (isset($pk)) {
|
||
// 设置主键
|
||
$pk = count($pk) > 1 ? $pk : $pk[0];
|
||
} else {
|
||
$pk = null;
|
||
}
|
||
$result = ['fields' => $fields, 'type' => $type, 'bind' => $bind, 'pk' => $pk];
|
||
$_info[$guid] = $result;
|
||
}
|
||
return $fetch ? $_info[$guid][$fetch] : $_info[$guid];
|
||
}
|
||
|
||
/**
|
||
* 获取当前模型对象的主键
|
||
* @access public
|
||
* @param string $table 数据表名
|
||
* @return mixed
|
||
*/
|
||
public function getPk($table = '')
|
||
{
|
||
return $this->getTableInfo($table, 'pk');
|
||
}
|
||
|
||
/**
|
||
* 参数绑定
|
||
* @access public
|
||
* @param mixed $key 参数名
|
||
* @param mixed $value 绑定变量值
|
||
* @param integer $type 绑定类型
|
||
* @return $this
|
||
*/
|
||
public function bind($key, $value = false, $type = PDO::PARAM_STR)
|
||
{
|
||
if (is_array($key)) {
|
||
$this->bind = array_merge($this->bind, $key);
|
||
} else {
|
||
$this->bind[$key] = [$value, $type];
|
||
}
|
||
return $this;
|
||
}
|
||
|
||
public function isBind($key)
|
||
{
|
||
return isset($this->bind[$key]);
|
||
}
|
||
|
||
/**
|
||
* 查询参数赋值
|
||
* @access protected
|
||
* @param array $options 表达式参数
|
||
* @return $this
|
||
*/
|
||
protected function options(array $options)
|
||
{
|
||
$this->options = $options;
|
||
return $this;
|
||
}
|
||
|
||
public function getOptions($name = '')
|
||
{
|
||
return isset($this->options[$name]) ? $this->options[$name] : $this->options;
|
||
}
|
||
|
||
/**
|
||
* 设置关联查询JOIN预查询
|
||
* @access public
|
||
* @param string|array $with 关联方法名称
|
||
* @return Db
|
||
*/
|
||
public function with($with)
|
||
{
|
||
if (empty($with)) {
|
||
return $this;
|
||
}
|
||
|
||
if (is_string($with)) {
|
||
$with = explode(',', $with);
|
||
}
|
||
|
||
$i = 0;
|
||
$currentModel = $this->options['model'];
|
||
|
||
/** @var Model $class */
|
||
$class = new $currentModel;
|
||
foreach ($with as $key => $relation) {
|
||
$closure = false;
|
||
if ($relation instanceof \Closure) {
|
||
// 支持闭包查询过滤关联条件
|
||
$closure = $relation;
|
||
$relation = $key;
|
||
$with[$key] = $key;
|
||
} elseif (is_string($relation) && strpos($relation, '.')) {
|
||
$with[$key] = $relation;
|
||
list($relation, $subRelation) = explode('.', $relation, 2);
|
||
}
|
||
|
||
/** @var Relation $model */
|
||
$model = $class->$relation();
|
||
$info = $class->getRelationInfo();
|
||
if (in_array($info['type'], [Relation::HAS_ONE, Relation::BELONGS_TO])) {
|
||
if (0 == $i) {
|
||
$name = Loader::parseName(basename(str_replace('\\', '/', $currentModel)));
|
||
$table = $this->getTable();
|
||
$this->table($table)->alias($name)->field(true, false, $table, $name);
|
||
}
|
||
// 预载入封装
|
||
$joinTable = $model->getTable();
|
||
$joinName = Loader::parseName(basename(str_replace('\\', '/', $info['model'])));
|
||
$this->via($joinName);
|
||
$this->join($joinTable . ' ' . $joinName, $name . '.' . $info['localKey'] . '=' . $joinName . '.' . $info['foreignKey'])->field(true, false, $joinTable, $joinName, $joinName . '__');
|
||
if ($closure) {
|
||
// 执行闭包查询
|
||
call_user_func_array($closure, [ & $this]);
|
||
}
|
||
$i++;
|
||
} elseif ($closure) {
|
||
$with[$key] = $closure;
|
||
}
|
||
}
|
||
$this->via();
|
||
$this->options['with'] = $with;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 设置当前字段添加的表别名
|
||
* @access public
|
||
* @param string $via
|
||
* @return Db
|
||
*/
|
||
public function via($via = '')
|
||
{
|
||
$this->options['via'] = $via;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 设置关联查询
|
||
* @access public
|
||
* @param string $relation 关联名称
|
||
* @return Db
|
||
*/
|
||
public function relation($relation)
|
||
{
|
||
$this->options['relation'] = $relation;
|
||
return $this;
|
||
}
|
||
|
||
/**
|
||
* 把主键值转换为查询条件 支持复合主键
|
||
* @access public
|
||
* @param array $data 主键数据
|
||
* @param mixed $options 表达式参数
|
||
* @return void
|
||
* @throws \think\Exception
|
||
*/
|
||
protected function parsePkWhere($data, &$options)
|
||
{
|
||
$pk = $this->getPk($options['table']);
|
||
// 获取当前数据表
|
||
if (!empty($options['alias'])) {
|
||
$alias = $options['alias'];
|
||
}
|
||
if (is_string($pk)) {
|
||
$key = isset($alias) ? $alias . '.' . $pk : $pk;
|
||
// 根据主键查询
|
||
if (is_array($data)) {
|
||
$where[$key] = isset($data[$pk]) ? $data[$pk] : ['in', $data];
|
||
} else {
|
||
$where[$key] = strpos($data, ',') ? ['IN', $data] : $data;
|
||
}
|
||
$options['where']['AND'] = $where;
|
||
} elseif (is_array($pk) && is_array($data) && !empty($data)) {
|
||
// 根据复合主键查询
|
||
foreach ($pk as $key) {
|
||
if (isset($data[$key])) {
|
||
$attr = isset($alias) ? $alias . '.' . $key : $key;
|
||
$where[$attr] = $data[$key];
|
||
} else {
|
||
throw new Exception('miss complex primary data');
|
||
}
|
||
}
|
||
$options['where']['AND'] = $where;
|
||
}
|
||
return;
|
||
}
|
||
|
||
/**
|
||
* 插入记录
|
||
* @access public
|
||
* @param mixed $data 数据
|
||
* @param boolean $replace 是否replace
|
||
* @param boolean $getLastInsID 是否获取自增ID
|
||
* @return integer
|
||
*/
|
||
public function insert(array $data, $replace = false, $getLastInsID = false)
|
||
{
|
||
// 分析查询表达式
|
||
$options = $this->parseExpress();
|
||
// 生成SQL语句
|
||
$sql = $this->builder()->insert($data, $options, $replace);
|
||
// 执行操作
|
||
return $this->connection->execute($sql, $this->getBind(), $options['fetch_sql'], $getLastInsID);
|
||
}
|
||
|
||
/**
|
||
* 插入记录并获取自增ID
|
||
* @access public
|
||
* @param mixed $data 数据
|
||
* @param boolean $replace 是否replace
|
||
* @return integer
|
||
*/
|
||
public function insertGetId(array $data, $replace = false)
|
||
{
|
||
return $this->insert($data, $replace, true);
|
||
}
|
||
|
||
/**
|
||
* 批量插入记录
|
||
* @access public
|
||
* @param mixed $dataSet 数据集
|
||
* @return integer
|
||
*/
|
||
public function insertAll(array $dataSet)
|
||
{
|
||
// 分析查询表达式
|
||
$options = $this->parseExpress();
|
||
if (!is_array($dataSet[0])) {
|
||
return false;
|
||
}
|
||
// 生成SQL语句
|
||
$sql = $this->builder()->insertAll($dataSet, $options);
|
||
// 执行操作
|
||
return $this->connection->execute($sql, $this->getBind(), $options['fetch_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 $table 要插入的数据表名
|
||
* @return int
|
||
* @throws \think\exception\PDOException
|
||
*/
|
||
public function selectInsert($fields, $table)
|
||
{
|
||
// 分析查询表达式
|
||
$options = $this->parseExpress();
|
||
// 生成SQL语句
|
||
$sql = $this->builder()->selectInsert($fields, $table, $options);
|
||
// 执行操作
|
||
return $this->connection->execute($sql, $this->getBind(), $options['fetch_sql']);
|
||
}
|
||
|
||
/**
|
||
* 更新记录
|
||
* @access public
|
||
* @param mixed $data 数据
|
||
* @return int
|
||
* @throws Exception
|
||
* @throws \think\exception\PDOException
|
||
*/
|
||
public function update(array $data)
|
||
{
|
||
$options = $this->parseExpress();
|
||
if (empty($options['where'])) {
|
||
$pk = $this->getPk($options['table']);
|
||
// 如果存在主键数据 则自动作为更新条件
|
||
if (is_string($pk) && isset($data[$pk])) {
|
||
$where[$pk] = $data[$pk];
|
||
unset($data[$pk]);
|
||
} elseif (is_array($pk)) {
|
||
// 增加复合主键支持
|
||
foreach ($pk as $field) {
|
||
if (isset($data[$field])) {
|
||
$where[$field] = $data[$field];
|
||
} else {
|
||
// 如果缺少复合主键数据则不执行
|
||
throw new Exception('miss pk data');
|
||
}
|
||
unset($data[$field]);
|
||
}
|
||
}
|
||
if (!isset($where)) {
|
||
// 如果没有任何更新条件则不执行
|
||
throw new Exception('miss update condition');
|
||
} else {
|
||
$options['where']['AND'] = $where;
|
||
}
|
||
}
|
||
// 生成UPDATE SQL语句
|
||
$sql = $this->builder()->update($data, $options);
|
||
if ('' == $sql) {
|
||
return 0;
|
||
}
|
||
// 执行操作
|
||
return $this->connection->execute($sql, $this->getBind(), $options['fetch_sql']);
|
||
}
|
||
|
||
/**
|
||
* 查找记录
|
||
* @access public
|
||
* @param array $data
|
||
* @return Collection|false|\PDOStatement|string
|
||
* @throws DbException
|
||
* @throws Exception
|
||
* @throws \think\exception\PDOException
|
||
*/
|
||
public function select($data = [])
|
||
{
|
||
if ($data instanceof Query) {
|
||
return $data->select();
|
||
} elseif ($data instanceof \Closure) {
|
||
call_user_func_array($data, [ & $this]);
|
||
}
|
||
// 分析查询表达式
|
||
$options = $this->parseExpress();
|
||
|
||
if (false === $data) {
|
||
// 用于子查询 不查询只返回SQL
|
||
$options['fetch_sql'] = true;
|
||
} elseif (empty($options['where']) && !empty($data)) {
|
||
// 主键条件分析
|
||
$this->parsePkWhere($data, $options);
|
||
}
|
||
|
||
$resultSet = false;
|
||
if (!empty($options['cache'])) {
|
||
// 判断查询缓存
|
||
$cache = $options['cache'];
|
||
$key = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
|
||
$resultSet = Cache::get($key);
|
||
}
|
||
if (!$resultSet) {
|
||
// 生成查询SQL
|
||
$sql = $this->builder()->select($options);
|
||
// 执行查询操作
|
||
$resultSet = $this->connection->query($sql, $this->getBind(), $options['fetch_sql'], $options['master'], $options['fetch_pdo']);
|
||
|
||
if (is_string($resultSet)) {
|
||
// 返回SQL
|
||
return $resultSet;
|
||
}
|
||
if ($resultSet instanceof \PDOStatement) {
|
||
// 返回PDOStatement对象
|
||
return $resultSet;
|
||
}
|
||
|
||
if (isset($cache)) {
|
||
// 缓存数据集
|
||
Cache::set($key, $resultSet, $cache['expire']);
|
||
}
|
||
}
|
||
|
||
// 返回结果处理
|
||
if ($resultSet) {
|
||
|
||
// 数据列表读取后的处理
|
||
if (!empty($options['model'])) {
|
||
// 生成模型对象
|
||
$model = $options['model'];
|
||
foreach ($resultSet as $key => $result) {
|
||
/** @var Model $result */
|
||
$result = new $model($result);
|
||
$result->isUpdate(true);
|
||
// 关联查询
|
||
if (!empty($options['relation'])) {
|
||
$result->relationQuery($options['relation']);
|
||
}
|
||
$resultSet[$key] = $result;
|
||
}
|
||
if (!empty($options['with'])) {
|
||
// 预载入
|
||
$resultSet = $result->eagerlyResultSet($resultSet, $options['with'], is_class($resultSet) ? get_class($resultSet) : '');
|
||
}
|
||
}
|
||
} elseif (!empty($options['fail'])) {
|
||
throw new DbException('Data not Found', $options, $sql);
|
||
}
|
||
return $resultSet;
|
||
}
|
||
|
||
/**
|
||
* 查找单条记录
|
||
* @access public
|
||
* @param array $data 表达式
|
||
* @return array|false|\PDOStatement|string|Model
|
||
* @throws DbException
|
||
* @throws Exception
|
||
* @throws \think\exception\PDOException
|
||
*/
|
||
public function find($data = [])
|
||
{
|
||
if ($data instanceof Query) {
|
||
return $data->find();
|
||
} elseif ($data instanceof \Closure) {
|
||
call_user_func_array($data, [ & $this]);
|
||
}
|
||
// 分析查询表达式
|
||
$options = $this->parseExpress();
|
||
|
||
if (empty($options['where']) && (!empty($data) || 0 == $data)) {
|
||
// AR模式分析主键条件
|
||
$this->parsePkWhere($data, $options);
|
||
}
|
||
|
||
$options['limit'] = 1;
|
||
$result = false;
|
||
if (!empty($options['cache'])) {
|
||
// 判断查询缓存
|
||
$cache = $options['cache'];
|
||
$key = is_string($cache['key']) ? $cache['key'] : md5(serialize($options));
|
||
$result = Cache::get($key);
|
||
}
|
||
if (!$result) {
|
||
// 生成查询SQL
|
||
$sql = $this->builder()->select($options);
|
||
// 执行查询
|
||
$result = $this->connection->query($sql, $this->getBind(), $options['fetch_sql'], $options['master'], $options['fetch_pdo']);
|
||
|
||
if (is_string($result)) {
|
||
// 返回SQL
|
||
return $result;
|
||
}
|
||
|
||
if ($result instanceof \PDOStatement) {
|
||
// 返回PDOStatement对象
|
||
return $result;
|
||
}
|
||
|
||
if (isset($cache)) {
|
||
// 缓存数据
|
||
Cache::set($key, $result, $cache['expire']);
|
||
}
|
||
}
|
||
|
||
// 数据处理
|
||
if (!empty($result[0])) {
|
||
$data = $result[0];
|
||
if (!empty($options['model'])) {
|
||
// 返回模型对象
|
||
$data = new $options['model']($data);
|
||
$data->isUpdate(true, isset($options['where']['AND']) ? $options['where']['AND'] : null);
|
||
// 关联查询
|
||
if (!empty($options['relation'])) {
|
||
$data->relationQuery($options['relation']);
|
||
}
|
||
if (!empty($options['with'])) {
|
||
// 预载入
|
||
$data->eagerlyResult($data, $options['with'], is_object($result) ? get_class($result) : '');
|
||
}
|
||
}
|
||
} elseif (!empty($options['fail'])) {
|
||
throw new DbException('Data not Found', $options, $sql);
|
||
} else {
|
||
$data = false;
|
||
}
|
||
return $data;
|
||
}
|
||
|
||
/**
|
||
* 分批数据返回处理
|
||
* @access public
|
||
* @param integer $count 每次处理的数据数量
|
||
* @param callable $callback 处理回调方法
|
||
* @param string $column 分批处理的字段名
|
||
* @return array
|
||
*/
|
||
public function chunk($count, $callback, $column = null)
|
||
{
|
||
$column = $column ?: $this->getPk();
|
||
$options = $this->getOptions();
|
||
$resultSet = $this->limit($count)->order($column, 'asc')->select();
|
||
|
||
while (!empty($resultSet)) {
|
||
if (false === call_user_func($callback, $resultSet)) {
|
||
return false;
|
||
}
|
||
$end = end($resultSet);
|
||
$lastId = is_array($end) ? $end[$column] : $end->$column;
|
||
$resultSet = $this->options($options)
|
||
->limit($count)
|
||
->where($column, '>', $lastId)
|
||
->order($column, 'asc')
|
||
->select();
|
||
}
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* 获取绑定的参数 并清空
|
||
* @access public
|
||
* @return array
|
||
*/
|
||
public function getBind()
|
||
{
|
||
$bind = $this->bind;
|
||
$this->bind = [];
|
||
return $bind;
|
||
}
|
||
|
||
/**
|
||
* 创建子查询SQL
|
||
* @access public
|
||
* @param bool $sub
|
||
* @return string
|
||
* @throws DbException
|
||
*/
|
||
public function buildSql($sub = true)
|
||
{
|
||
return $sub ? '( ' . $this->select(false) . ' )' : $this->select(false);
|
||
}
|
||
|
||
/**
|
||
* 删除记录
|
||
* @access public
|
||
* @param array $data 表达式
|
||
* @return int
|
||
* @throws Exception
|
||
* @throws \think\exception\PDOException
|
||
*/
|
||
public function delete($data = [])
|
||
{
|
||
// 分析查询表达式
|
||
$options = $this->parseExpress();
|
||
|
||
if (empty($options['where']) && !empty($data)) {
|
||
// AR模式分析主键条件
|
||
$this->parsePkWhere($data, $options);
|
||
}
|
||
|
||
if (empty($options['where'])) {
|
||
// 如果条件为空 不进行删除操作 除非设置 1=1
|
||
throw new Exception('no data to delete without where');
|
||
}
|
||
// 生成删除SQL语句
|
||
$sql = $this->builder()->delete($options);
|
||
// 执行操作
|
||
return $this->connection->execute($sql, $this->getBind(), $options['fetch_sql']);
|
||
}
|
||
|
||
/**
|
||
* 分析表达式（可用于查询或者写入操作）
|
||
* @access public
|
||
* @return array
|
||
*/
|
||
public function parseExpress()
|
||
{
|
||
$options = $this->options;
|
||
|
||
// 获取数据表
|
||
if (empty($options['table'])) {
|
||
$options['table'] = $this->getTable();
|
||
}
|
||
|
||
if (!isset($options['where'])) {
|
||
$options['where'] = [];
|
||
}
|
||
|
||
// 表别名
|
||
if (!empty($options['alias'])) {
|
||
$options['table'] .= ' ' . $options['alias'];
|
||
}
|
||
|
||
if (!isset($options['field'])) {
|
||
$options['field'] = '*';
|
||
}
|
||
|
||
if (!isset($options['strict'])) {
|
||
$options['strict'] = $this->connection->getConfig('fields_strict');
|
||
}
|
||
|
||
foreach (['master', 'lock', 'fetch_pdo', 'fetch_sql', 'distinct'] as $name) {
|
||
if (!isset($options[$name])) {
|
||
$options[$name] = false;
|
||
}
|
||
}
|
||
|
||
foreach (['join', 'union', 'group', 'having', 'limit', 'order', 'force', 'comment'] as $name) {
|
||
if (!isset($options[$name])) {
|
||
$options[$name] = '';
|
||
}
|
||
}
|
||
|
||
if (isset($options['page'])) {
|
||
// 根据页数计算limit
|
||
list($page, $listRows) = $options['page'];
|
||
$page = $page > 0 ? $page : 1;
|
||
$listRows = $listRows > 0 ? $listRows : (is_numeric($options['limit']) ? $options['limit'] : 20);
|
||
$offset = $listRows * ($page - 1);
|
||
$options['limit'] = $offset . ',' . $listRows;
|
||
}
|
||
|
||
$this->options = [];
|
||
return $options;
|
||
}
|
||
|
||
}
|