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Server : nginx/1.20.1 System : Linux iZ2ze9ojcl78uluczwag69Z 4.18.0-240.22.1.el8_3.x86_64 #1 SMP Thu Apr 8 19:01:30 UTC 2021 x86_64 User : www ( 1000) PHP Version : 7.3.28 Disable Function : passthru,exec,system,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv Directory : /www/wwwroot/0531yanglao.com/vendor/topthink/think-orm/src/model/concern/ |
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006~2019 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
declare (strict_types = 1);
namespace think\model\concern;
use think\db\exception\DbException as Exception;
/**
* 乐观锁
*/
trait OptimLock
{
protected function getOptimLockField()
{
return property_exists($this, 'optimLock') && isset($this->optimLock) ? $this->optimLock : 'lock_version';
}
/**
* 数据检查
* @access protected
* @return void
*/
protected function checkData(): void
{
$this->isExists() ? $this->updateLockVersion() : $this->recordLockVersion();
}
/**
* 记录乐观锁
* @access protected
* @return void
*/
protected function recordLockVersion(): void
{
$optimLock = $this->getOptimLockField();
if ($optimLock) {
$this->set($optimLock, 0);
}
}
/**
* 更新乐观锁
* @access protected
* @return void
*/
protected function updateLockVersion(): void
{
$optimLock = $this->getOptimLockField();
if ($optimLock && $lockVer = $this->getOrigin($optimLock)) {
// 更新乐观锁
$this->set($optimLock, $lockVer + 1);
}
}
public function getWhere()
{
$where = parent::getWhere();
$optimLock = $this->getOptimLockField();
if ($optimLock && $lockVer = $this->getOrigin($optimLock)) {
$where[] = [$optimLock, '=', $lockVer];
}
return $where;
}
protected function checkResult($result): void
{
if (!$result) {
throw new Exception('record has update');
}
}
}