138 lines
4.5 KiB
PHP
138 lines
4.5 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) 2006~2018 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\builder;
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use think\db\Builder;
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use think\Exception;
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/**
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* mysql数据库驱动
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*/
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class Mysql extends Builder
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{
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protected $insertAllSql = '%INSERT% INTO %TABLE% (%FIELD%) VALUES %DATA% %COMMENT%';
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protected $updateSql = 'UPDATE %TABLE% %JOIN% SET %SET% %WHERE% %ORDER%%LIMIT% %LOCK%%COMMENT%';
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/**
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* 生成insertall SQL
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* @access public
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* @param array $dataSet 数据集
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* @param array $options 表达式
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* @param bool $replace 是否replace
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* @return string
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* @throws Exception
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*/
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public function insertAll($dataSet, $options = [], $replace = false)
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{
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// 获取合法的字段
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if ('*' == $options['field']) {
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$fields = array_keys($this->query->getFieldsType($options['table']));
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} else {
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$fields = $options['field'];
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}
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foreach ($dataSet as $data) {
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foreach ($data as $key => $val) {
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if (!in_array($key, $fields, true)) {
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if ($options['strict']) {
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throw new Exception('fields not exists:[' . $key . ']');
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}
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unset($data[$key]);
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} elseif (is_null($val)) {
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$data[$key] = 'NULL';
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} elseif (is_scalar($val)) {
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$data[$key] = $this->parseValue($val, $key);
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} elseif (is_object($val) && method_exists($val, '__toString')) {
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// 对象数据写入
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$data[$key] = $val->__toString();
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} else {
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// 过滤掉非标量数据
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unset($data[$key]);
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}
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}
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$value = array_values($data);
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$values[] = '( ' . implode(',', $value) . ' )';
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if (!isset($insertFields)) {
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$insertFields = array_map([$this, 'parseKey'], array_keys($data));
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}
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}
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return str_replace(
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['%INSERT%', '%TABLE%', '%FIELD%', '%DATA%', '%COMMENT%'],
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[
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$replace ? 'REPLACE' : 'INSERT',
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$this->parseTable($options['table'], $options),
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implode(' , ', $insertFields),
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implode(' , ', $values),
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$this->parseComment($options['comment']),
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], $this->insertAllSql);
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}
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/**
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* 字段和表名处理
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* @access protected
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* @param mixed $key
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* @param array $options
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* @return string
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*/
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protected function parseKey($key, $options = [], $strict = false)
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{
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if (is_numeric($key)) {
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return $key;
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} elseif ($key instanceof Expression) {
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return $key->getValue();
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}
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$key = trim($key);
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if (strpos($key, '$.') && false === strpos($key, '(')) {
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// JSON字段支持
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list($field, $name) = explode('$.', $key);
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return 'json_extract(' . $field . ', \'$.' . $name . '\')';
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} elseif (strpos($key, '.') && !preg_match('/[,\'\"\(\)`\s]/', $key)) {
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list($table, $key) = explode('.', $key, 2);
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if ('__TABLE__' == $table) {
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$table = $this->query->getTable();
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}
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if (isset($options['alias'][$table])) {
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$table = $options['alias'][$table];
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}
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}
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if ($strict && !preg_match('/^[\w\.\*]+$/', $key)) {
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throw new Exception('not support data:' . $key);
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}
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if ('*' != $key && ($strict || !preg_match('/[,\'\"\*\(\)`.\s]/', $key))) {
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$key = '`' . $key . '`';
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}
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if (isset($table)) {
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if (strpos($table, '.')) {
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$table = str_replace('.', '`.`', $table);
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}
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$key = '`' . $table . '`.' . $key;
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}
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return $key;
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}
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/**
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* 随机排序
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* @access protected
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* @return string
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*/
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protected function parseRand()
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{
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return 'rand()';
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}
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}
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