<?php
|
// +----------------------------------------------------------------------
|
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
|
// +----------------------------------------------------------------------
|
// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
|
// +----------------------------------------------------------------------
|
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
|
// +----------------------------------------------------------------------
|
// | Author: liu21st <liu21st@gmail.com>
|
// +----------------------------------------------------------------------
|
|
namespace think\db\builder;
|
|
use think\db\Builder;
|
|
/**
|
* Sqlite数据库驱动
|
*/
|
class Sqlite extends Builder
|
{
|
|
/**
|
* limit
|
* @access public
|
* @param string $limit
|
* @return string
|
*/
|
public function parseLimit($limit)
|
{
|
$limitStr = '';
|
if (!empty($limit)) {
|
$limit = explode(',', $limit);
|
if (count($limit) > 1) {
|
$limitStr .= ' LIMIT ' . $limit[1] . ' OFFSET ' . $limit[0] . ' ';
|
} else {
|
$limitStr .= ' LIMIT ' . $limit[0] . ' ';
|
}
|
}
|
return $limitStr;
|
}
|
|
/**
|
* 随机排序
|
* @access protected
|
* @return string
|
*/
|
protected function parseRand()
|
{
|
return 'RANDOM()';
|
}
|
|
/**
|
* 字段和表名处理
|
* @access protected
|
* @param mixed $key
|
* @param array $options
|
* @return string
|
*/
|
protected function parseKey($key, $options = [], $strict = false)
|
{
|
if (is_numeric($key)) {
|
return $key;
|
} elseif ($key instanceof Expression) {
|
return $key->getValue();
|
}
|
|
$key = trim($key);
|
if (strpos($key, '.')) {
|
list($table, $key) = explode('.', $key, 2);
|
if ('__TABLE__' == $table) {
|
$table = $this->query->getTable();
|
}
|
if (isset($options['alias'][$table])) {
|
$table = $options['alias'][$table];
|
}
|
}
|
if (isset($table)) {
|
$key = $table . '.' . $key;
|
}
|
return $key;
|
}
|
}
|
