我试图了解PDO细节。所以我编码了这个：
<?php
namespace news\system\worker;
use news\data\news\NewsEditor;
use wcf\data\object\type\ObjectTypeCache;
use wcf\system\database\util\PreparedStatementConditionBuilder;
use wcf\system\search\SearchIndexManager;
use wcf\system\user\activity\point\UserActivityPointHandler;
use wcf\system\worker\AbstractRebuildDataWorker;
use wcf\system\WCF;
/**
* Worker actions for news entries.
*
* @author Pascal Bade
* @copyright 2013 voolia.de
* @license Creative Commons CC-BY-ND <http://creativecommons.org/licenses/by-nd/3.0/deed.de>
* @package de.voolia.news
*/
class NewsDataWorker extends AbstractRebuildDataWorker {
/**
* @see \wcf\system\worker\AbstractRebuildDataWorker::$objectListClassName
*/
protected $objectListClassName = 'news\data\news\NewsList';
/**
* @see \wcf\system\worker\AbstractWorker::$limit
*/
protected $limit = 250;
/**
* @see \wcf\system\worker\AbstractRebuildDataWorker::initObjectList
*/
protected function initObjectList() {
parent::initObjectList();
$this->objectList->sqlOrderBy = 'news.newsID';
}
/**
* @see \wcf\system\worker\IWorker::execute()
*/
public function execute() {
parent::execute();
if (!count($this->objectList)) {
return;
}
if (!$this->loopCount) {
// remove the activity points
UserActivityPointHandler::getInstance()->reset('de.voolia.news.activityPointEvent.news');
// remove the entry from search index
SearchIndexManager::getInstance()->reset('de.voolia.news.entry');
}
// get news attachments
$attachmentObjectType = ObjectTypeCache::getInstance()->getObjectTypeByName('com.woltlab.wcf.attachment.objectType', 'de.voolia.news.entry');
$sql = "SELECT COUNT(*) AS attachments
FROM wcf".WCF_N."_attachment
WHERE objectTypeID = ?
AND objectID = ?";
$attachments = WCF::getDB()->prepareStatement($sql);
// calculate the cumulative likes
$conditions = new PreparedStatementConditionBuilder();
$conditions->add("objectID IN (?)", array($this->objectList->getObjectIDs()));
$conditions->add("objectTypeID = ?", array(ObjectTypeCache::getInstance()->getObjectTypeIDByName('com.woltlab.wcf.like.likeableObject', 'de.voolia.news.likeableNews')));
$sql = "SELECT objectID,
cumulativeLikes
FROM wcf".WCF_N."_like_object
".$conditions;
$statement = WCF::getDB()->prepareStatement($sql);
$statement->execute($conditions->getParameters());
$likes = array();
while ($row = $statement->fetchArray()) {
$likes[$row['objectID']] = $row['cumulativeLikes'];
}
// update the news entries
$userItems = array();
foreach ($this->objectList as $news) {
// new EntryEditor
$editor = new NewsEditor($news);
// update search index
SearchIndexManager::getInstance()->add('de.voolia.news.entry', $news->newsID, $news->message, $news->subject, $news->time, $news->userID, $news->username, $news->languageID);
// news data
$newsData = array();
// likes
$newsData['cumulativeLikes'] = (isset($likes[$news->newsID])) ? $likes[$news->newsID] : 0;
// attachments
$attachments->execute(array($attachmentObjectType->objectTypeID, $news->newsID));
$row = $attachments->fetchArray();
$newsData['attachments'] = $row['attachments'];
if ($news->userID) {
if (!isset($userItems[$news->userID])) {
$userItems[$news->userID] = 0;
}
$userItems[$news->userID]++;
}
$editor->update($newsData);
}
// update activity points
UserActivityPointHandler::getInstance()->fireEvents('de.voolia.news.activityPointEvent.news', $userItems, false);
}
}
但我收到了这个
SQLSTATE [HY000]：常规错误：2014在其他未缓冲的查询处于活动状态时无法执行查询。考虑使用PDOStatement :: fetchAll（）。或者，如果您的代码只是针对mysql运行，则可以通过设置PDO :: MYSQL_ATTR_USE_BUFFERED_QUERY属性来启用查询缓冲。
有人可以为此做点什么吗？
答案 0 :(得分：-1)
我收到此错误：
SQLSTATE [HY000]：常规错误：2014在其他未缓冲的查询处于活动状态时无法执行查询。考虑使用PDOStatement :: fetchAll（）。或者，如果您的代码只是针对mysql运行，则可以通过设置PDO :: MYSQL_ATTR_USE_BUFFERED_QUERY属性来启用查询缓冲。
堆栈跟踪：