<?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) 2006~2023 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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declare (strict_types = 1);
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namespace think\db;
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use Closure;
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use PDOStatement;
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use ReflectionFunction;
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use think\db\exception\DbException as Exception;
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/**
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* PDO数据查询类.
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*/
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class Query extends BaseQuery
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{
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use concern\JoinAndViewQuery;
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use concern\ParamsBind;
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use concern\TableFieldInfo;
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/**
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* 表达式方式指定Field排序.
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*
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* @param string $field 排序字段
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* @param array $bind 参数绑定
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*
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* @return $this
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*/
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public function orderRaw(string $field, array $bind = [])
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{
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$this->options['order'][] = new Raw($field, $bind);
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return $this;
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}
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/**
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* 表达式方式指定查询字段.
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*
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* @param string $field 字段名
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*
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* @return $this
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*/
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public function fieldRaw(string $field)
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{
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$this->options['field'][] = new Raw($field);
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return $this;
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}
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/**
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* 指定Field排序 orderField('id',[1,2,3],'desc').
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*
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* @param string $field 排序字段
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* @param array $values 排序值
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* @param string $order 排序 desc/asc
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*
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* @return $this
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*/
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public function orderField(string $field, array $values, string $order = '')
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{
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if (!empty($values)) {
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$values['sort'] = $order;
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$this->options['order'][$field] = $values;
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}
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return $this;
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}
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/**
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* 随机排序.
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*
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* @return $this
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*/
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public function orderRand()
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{
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$this->options['order'][] = '[rand]';
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return $this;
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}
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/**
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* 使用表达式设置数据.
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*
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* @param string $field 字段名
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* @param string $value 字段值
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*
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* @return $this
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*/
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public function exp(string $field, string $value)
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{
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$this->options['data'][$field] = new Raw($value);
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return $this;
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}
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/**
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* 表达式方式指定当前操作的数据表.
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*
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* @param mixed $table 表名
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*
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* @return $this
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*/
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public function tableRaw(string $table)
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{
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$this->options['table'] = new Raw($table);
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return $this;
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}
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/**
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* 获取执行的SQL语句而不进行实际的查询.
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*
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* @param bool $fetch 是否返回sql
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*
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* @return $this|Fetch
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*/
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public function fetchSql(bool $fetch = true)
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{
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$this->options['fetch_sql'] = $fetch;
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if ($fetch) {
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return new Fetch($this);
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}
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return $this;
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}
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/**
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* 批处理执行SQL语句
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* 批处理的指令都认为是execute操作.
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*
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* @param array $sql SQL批处理指令
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*
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* @return bool
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*/
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public function batchQuery(array $sql = []): bool
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{
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return $this->connection->batchQuery($this, $sql);
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}
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/**
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* USING支持 用于多表删除.
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*
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* @param mixed $using USING
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*
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* @return $this
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*/
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public function using($using)
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{
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$this->options['using'] = $using;
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return $this;
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}
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/**
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* 存储过程调用.
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*
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* @param bool $procedure 是否为存储过程查询
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*
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* @return $this
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*/
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public function procedure(bool $procedure = true)
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{
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$this->options['procedure'] = $procedure;
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return $this;
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}
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/**
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* 指定group查询.
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*
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* @param string|array $group GROUP
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*
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* @return $this
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*/
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public function group($group)
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{
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$this->options['group'] = $group;
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return $this;
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}
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/**
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* 指定having查询.
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*
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* @param string $having having
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*
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* @return $this
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*/
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public function having(string $having)
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{
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$this->options['having'] = $having;
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return $this;
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}
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/**
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* 指定distinct查询.
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*
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* @param bool $distinct 是否唯一
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*
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* @return $this
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*/
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public function distinct(bool $distinct = true)
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{
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$this->options['distinct'] = $distinct;
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return $this;
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}
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/**
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* 指定强制索引.
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*
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* @param string $force 索引名称
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*
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* @return $this
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*/
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public function force(string $force)
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{
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$this->options['force'] = $force;
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return $this;
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}
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/**
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* 查询注释.
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*
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* @param string $comment 注释
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*
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* @return $this
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*/
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public function comment(string $comment)
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{
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$this->options['comment'] = $comment;
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return $this;
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}
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/**
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* 设置是否REPLACE.
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*
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* @param bool $replace 是否使用REPLACE写入数据
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*
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* @return $this
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*/
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public function replace(bool $replace = true)
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{
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$this->options['replace'] = $replace;
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return $this;
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}
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/**
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* 设置当前查询所在的分区.
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*
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* @param string|array $partition 分区名称
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*
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* @return $this
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*/
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public function partition($partition)
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{
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$this->options['partition'] = $partition;
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return $this;
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}
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/**
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* 设置DUPLICATE.
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*
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* @param array|string|Raw $duplicate DUPLICATE信息
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*
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* @return $this
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*/
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public function duplicate($duplicate)
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{
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$this->options['duplicate'] = $duplicate;
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return $this;
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}
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/**
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* 设置查询的额外参数.
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*
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* @param string $extra 额外信息
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*
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* @return $this
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*/
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public function extra(string $extra)
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{
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$this->options['extra'] = $extra;
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return $this;
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}
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/**
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* 创建子查询SQL.
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*
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* @param bool $sub 是否添加括号
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*
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* @throws Exception
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*
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* @return string
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*/
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public function buildSql(bool $sub = true): string
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{
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return $sub ? '( ' . $this->fetchSql()->select() . ' )' : $this->fetchSql()->select();
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}
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/**
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* 获取当前数据表的主键.
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*
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* @return string|array
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*/
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public function getPk()
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{
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if (empty($this->pk)) {
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$this->pk = $this->connection->getPk($this->getTable());
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}
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return $this->pk;
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}
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/**
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* 指定数据表自增主键.
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*
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* @param string $autoinc 自增键
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*
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* @return $this
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*/
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public function autoinc(string $autoinc)
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{
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$this->autoinc = $autoinc;
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return $this;
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}
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/**
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* 获取当前数据表的自增主键.
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*
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* @return string|null
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*/
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public function getAutoInc()
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{
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$tableName = $this->getTable();
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if (empty($this->autoinc) && $tableName) {
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$this->autoinc = $this->connection->getAutoInc($tableName);
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}
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return $this->autoinc;
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}
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/**
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* 字段值增长
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*
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* @param string $field 字段名
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* @param float $step 增长值
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*
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* @return $this
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*/
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public function inc(string $field, float $step = 1)
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{
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$this->options['data'][$field] = ['INC', $step];
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return $this;
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}
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/**
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* 字段值减少.
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*
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* @param string $field 字段名
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* @param float $step 增长值
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*
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* @return $this
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*/
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public function dec(string $field, float $step = 1)
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{
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$this->options['data'][$field] = ['DEC', $step];
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return $this;
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}
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/**
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* 字段值增长（支持延迟写入）
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*
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* @param string $field 字段名
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* @param float $step 步进值
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* @param int $lazyTime 延迟时间（秒）
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*
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* @return int|false
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*/
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public function setInc(string $field, float $step = 1, int $lazyTime = 0)
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{
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if (empty($this->options['where']) && $this->model) {
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$this->where($this->model->getWhere());
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}
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if (empty($this->options['where'])) {
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// 如果没有任何更新条件则不执行
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throw new Exception('miss update condition');
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}
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if ($lazyTime > 0) {
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$guid = $this->getLazyFieldCacheKey($field);
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$step = $this->lazyWrite('inc', $guid, $step, $lazyTime);
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if (false === $step) {
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return true;
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}
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}
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return $this->inc($field, $step)->update();
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}
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/**
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* 字段值减少（支持延迟写入）
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*
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* @param string $field 字段名
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* @param float $step 步进值
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* @param int $lazyTime 延迟时间（秒）
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*
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* @return int|false
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*/
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public function setDec(string $field, float $step = 1, int $lazyTime = 0)
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{
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if (empty($this->options['where']) && $this->model) {
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$this->where($this->model->getWhere());
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}
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if (empty($this->options['where'])) {
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// 如果没有任何更新条件则不执行
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throw new Exception('miss update condition');
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}
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if ($lazyTime > 0) {
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$guid = $this->getLazyFieldCacheKey($field);
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$step = $this->lazyWrite('dec', $guid, $step, $lazyTime);
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if (false === $step) {
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return true;
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}
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return $this->inc($field, $step)->update();
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}
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return $this->dec($field, $step)->update();
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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 protected
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* @param string $type 自增或者自减
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* @param string $guid 写入标识
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* @param float $step 写入步进值
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* @param int $lazyTime 延时时间(s)
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* @return false|integer
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*/
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protected function lazyWrite(string $type, string $guid, float $step, int $lazyTime)
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{
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$cache = $this->getCache();
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if (!$cache->has($guid . '_time')) {
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// 计时开始
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$cache->set($guid . '_time', time());
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$cache->$type($guid, $step);
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} elseif (time() > $cache->get($guid . '_time') + $lazyTime) {
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// 删除缓存
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$value = $cache->$type($guid, $step);
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$cache->delete($guid);
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$cache->delete($guid . '_time');
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return 0 === $value ? false : $value;
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} else {
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// 更新缓存
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$cache->$type($guid, $step);
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}
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return false;
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}
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/**
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* 获取延迟写入字段值.
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*
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* @param string $field 字段名称
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* @param mixed $id 主键值
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*
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* @return int
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*/
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protected function getLazyFieldValue(string $field, $id = null): int
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{
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return (int) $this->getCache()->get($this->getLazyFieldCacheKey($field, $id));
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}
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/**
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* 获取延迟写入字段的缓存Key
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*
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* @param string $field 字段名
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* @param mixed $id 主键值
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*
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* @return string
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*/
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protected function getLazyFieldCacheKey(string $field, $id = null): string
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{
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return 'lazy_' . $this->getTable() . '_' . $field . '_' . ($id ?: $this->getKey());
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}
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/**
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* 获取当前的查询标识.
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*
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* @param mixed $data 要序列化的数据
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*
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* @return string
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*/
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public function getQueryGuid($data = null): string
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{
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if (null === $data) {
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$data = $this->options;
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$data['table'] = $this->getConfig('database') . var_export($this->getTable(), true);
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unset($data['scope'], $data['default_model']);
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foreach (['AND', 'OR', 'XOR'] as $logic) {
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if (isset($data['where'][$logic])) {
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foreach ($data['where'][$logic] as $key => $val) {
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if ($val instanceof Closure) {
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$reflection = new ReflectionFunction($val);
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$properties = $reflection->getStaticVariables();
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if (empty($properties)) {
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$name = $reflection->getName() . $reflection->getStartLine() . '-' . $reflection->getEndLine();
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} else {
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$name = var_export($properties, true);
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}
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$data['Closure'][] = $name;
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unset($data['where'][$logic][$key]);
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}
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}
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}
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}
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}
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return md5(serialize(var_export($data, true)) . serialize($this->getBind(false)));
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}
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/**
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* 执行查询但只返回PDOStatement对象
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*
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* @return PDOStatement
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*/
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public function getPdo(): PDOStatement
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{
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return $this->connection->pdo($this);
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}
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/**
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* 使用游标查找记录.
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*
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* @param mixed $data 数据
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*
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* @return \Generator
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*/
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public function cursor($data = null)
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{
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if (!is_null($data)) {
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// 主键条件分析
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$this->parsePkWhere($data);
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}
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$this->options['data'] = $data;
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$connection = clone $this->connection;
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return $connection->cursor($this);
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}
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/**
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* 分批数据返回处理.
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*
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* @param int $count 每次处理的数据数量
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* @param callable $callback 处理回调方法
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* @param string|array|null $column 分批处理的字段名
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* @param string $order 字段排序
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*
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* @throws Exception
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*
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* @return bool
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*/
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public function chunk(int $count, callable $callback, string | array | null $column = null, string $order = 'asc'): bool
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{
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$options = $this->getOptions();
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$column = $column ?: $this->getPk();
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if (isset($options['order'])) {
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unset($options['order']);
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}
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$bind = $this->bind;
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if (is_array($column)) {
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$times = 1;
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$query = $this->options($options)->page($times, $count);
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} else {
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$query = $this->options($options)->limit($count);
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if (str_contains($column, '.')) {
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[$alias, $key] = explode('.', $column);
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} else {
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$key = $column;
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}
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}
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$resultSet = $query->order($column, $order)->select();
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while (count($resultSet) > 0) {
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if (false === call_user_func($callback, $resultSet)) {
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return false;
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}
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if (isset($times)) {
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$times++;
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$query = $this->options($options)->page($times, $count);
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} else {
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$end = $resultSet->pop();
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$lastId = is_array($end) ? $end[$key] : $end->getData($key);
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$query = $this->options($options)
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->limit($count)
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->where($column, 'asc' == strtolower($order) ? '>' : '<', $lastId);
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}
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$resultSet = $query->bind($bind)->order($column, $order)->select();
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}
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return true;
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}
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}
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