我正在生成一个xml文件，生成时间太长，这对我来说是个大问题，因为由于延迟时间，某些xml集成无法正常工作。
我想缓存此xml文件的xml副本，但我不知道如何执行此操作，下面是生成xml的代码：
<?php
defined('_JEXEC') or die( 'Restricted access' );
jimport( 'joomla.application.component.view');
class PropertiesViewProperties extends JView
{
function display($tpl = null)
{
global $mainframe;
$db =& JFactory::getDBO();
$query = 'SELECT p.*,c.name as name_category,t.name as name_type,cy.name as name_country,s.name as name_state,l.name as name_locality,l.alias as locality_alias,pf.name as name_profile, '
. ' CASE WHEN CHAR_LENGTH(p.alias) THEN CONCAT_WS(":", p.id, p.alias) ELSE p.id END as Pslug,'
. ' CASE WHEN CHAR_LENGTH(c.alias) THEN CONCAT_WS(":", c.id, c.alias) ELSE c.id END as Cslug,'
. ' CASE WHEN CHAR_LENGTH(cy.alias) THEN CONCAT_WS(":", cy.id, cy.alias) ELSE cy.id END as CYslug,'
. ' CASE WHEN CHAR_LENGTH(s.alias) THEN CONCAT_WS(":", s.id, s.alias) ELSE s.id END as Sslug,'
. ' CASE WHEN CHAR_LENGTH(l.alias) THEN CONCAT_WS(":", l.id, l.alias) ELSE l.id END as Lslug, '
. ' CASE WHEN CHAR_LENGTH(t.alias) THEN CONCAT_WS(":", t.id, t.alias) ELSE t.id END as Tslug '
. ' FROM #__products AS p '
. ' LEFT JOIN #__country AS cy ON cy.id = p.cyid '
. ' LEFT JOIN #__state AS s ON s.id = p.sid '
. ' LEFT JOIN #__locality AS l ON l.id = p.lid '
. ' LEFT JOIN #__profiles AS pf ON pf.mid = p.agent_id '
. ' LEFT JOIN #__category AS c ON c.id = p.cid '
. ' LEFT JOIN #__type AS t ON t.id = p.type '
. ' WHERE p.published = 1 '
. ' AND p.available <> 2 '
.' ORDER BY p.id desc limit 10, 999999'
;
$db->setQuery( $query );
$this->products = $db->loadObjectList();
$document = &JFactory::getDocument();
$document->setMimeEncoding('text/xml');
//header ("content-type: text/xml");
switch(JRequest::getVar('feed'))
{
case 'todobrasilimobiliaria' :
$this->todobrasilimobiliaria();
break;
}
}
function Images($id)
{
$db =& JFactory::getDBO();
$query = ' SELECT i.* '
. ' FROM #__images as i '
. ' WHERE i.published = 1 AND i.parent = '.$id
. ' order by i.ordering ';
$db->setQuery($query);
$Images = $db->loadObjectList();
return $Images;
}
function todobrasilimobiliaria()
{
$todobrasilimobiliaria_cat_id = array();
$todobrasilimobiliaria_cat_id[17]='apartamento padrão';
$todobrasilimobiliaria_cat_id[18]='casa';
$todobrasilimobiliaria_cat_id[19]='casa em condomínio';
$todobrasilimobiliaria_cat_id[20]='cobertura';
$todobrasilimobiliaria_cat_id[21]='área';
$todobrasilimobiliaria_cat_id[22]='comercial';
$todobrasilimobiliaria_cat_id[25]='apartamento padrão';
$todobrasilimobiliaria_cat_id[26]='terreno em condomínio';
$todobrasilimobiliaria_cat_id[27]='pousada';
$todobrasilimobiliaria_cat_id[28]='sítio';
$todobrasilimobiliaria_cat_id[29]='terreno';
$crlf="\n";
$line = '<?xml version="1.0" encoding="utf-8"?>' . $crlf;
$line .= '<root>'. $crlf;
$line .= '<todobrasil>'. $crlf;
$line .= '<feed_version>2_1</feed_version>'. $crlf;
$line .= '</todobrasil>'. $crlf;
foreach ( $this->products as $row )
{
$url = substr(JURI::base(), 0, -1);
$link = $url.LinkHelper::getLink('properties','showproperty','',$row->CYslug,$row->Sslug,$row->Lslug,$row->Cslug,$row->Tslug,$row->Pslug);
$title = $this->escape( $row->name );
$category = 'vender';
$tipo = $todobrasilimobiliaria_cat_id[$row->cid];
$data_entrega = '00/00/0000';
$estado_superachei = 'SC';
$type = $row->name_type;
$desc = $row->text;
$imageBaseUrl = JURI::root().'images/';
$imageUrl = $imageBaseUrl.$row->id.'/';
$images=$this->Images($row->id);
$listdate = JFactory::getDate($row->refresh_time)->toFormat('%d/%m/%Y');
$chamada = trim($row->name_category, 's').' tipo '.$row->name_type.' - '.$row->name_locality;
$line .= '<property>'. $crlf;
$line .=' <id><![CDATA['.$row->id.']]></id>' . $crlf;
$line .=' <date><![CDATA['.$row->refresh_time.']]></date>' . $crlf;
$line .=' <ref><![CDATA['.$row->ref.']]></ref>' . $crlf;
$line .=' <price><![CDATA['.(int)$row->price.']]></price>' . $crlf;
$line .=' <price_freq>venda</price_freq>' . $crlf;
$line .= '<type>'. $crlf;
$line .=' <en><![CDATA['.$tipo.']]></en>' . $crlf;
$line .= '</type>'. $crlf;
$line .=' <country>Brasil</country>' . $crlf;
$line .=' <currency>BRL</currency>' . $crlf;
$line .=' <town><![CDATA['.$row->name_state.']]></town>' . $crlf;
$line .=' <province><![CDATA['.$row->name_country.']]></province>' . $crlf;
$line .=' <location_detail><![CDATA['.$row->name_locality.']]></location_detail>' . $crlf;
if($row->bedrooms>0){
$line .=' <beds><![CDATA['.$row->bedrooms.']]></beds>' . $crlf;
}
if($row->bathrooms>0){
$line .=' <baths><![CDATA['.$row->bathrooms.']]></baths>' . $crlf;
}
$line .=' <url><![CDATA['.$link.']]></url>' . $crlf;
$line .= '<surface_area>'. $crlf;
$line .=' <built><![CDATA['.$row->covered_area.']]></built>' . $crlf;
$line .=' <plot><![CDATA['.$row->area.']]></plot>' . $crlf;
$line .= '</surface_area>'. $crlf;
$line .= '<desc>'. $crlf;
$line .=' <en><![CDATA['.strip_tags($row->text).']]></en>' . $crlf;
$line .= '</desc>'. $crlf;
$line .='<images>' . $crlf;
$i=0;
foreach($images as $img) {
if ($i < 10)
{
$i +=1;
$line .= ' <image id="'.$i.'">' . $crlf;
$line .=' <url><![CDATA['.$imageUrl.$img->name.']]></url>' . $crlf;
$line .= ' </image>' . $crlf;
}
}
$line .='</images>' . $crlf;
$line .= '</property>'. $crlf;
}
$line .= '</root>'. $crlf;
echo $line;
}
我想加速xml生成，因为它需要超过2分钟才能生成并且我在专用服务器上，所以我想到的解决方案是缓存这个副本，任何人都可以帮助我吗？ / p>
答案 0 :(得分：0)
Joomla几乎可以缓存任何内容： 您应该在帮助程序中使用静态方法getList（）检索查询结果，然后使用相应的JCache后代：这适用于模块：
$cacheparams = new stdClass;
$cacheparams->cachemode = 'safeuri';
$cacheparams->class = 'yourclassHelper';
$cacheparams->method = 'getList';
$cacheparams->methodparams = $params;
$cacheparams->modeparams = array('someparam'=>'int');
$list = JModuleHelper::moduleCache ($module, $params, $cacheparams);
确保modeparams仅包含将使您的查询更改的参数，以确保查询不会经常运行。
另外，放下$ mainframe，我猜它是旧版本的组件。
最后，你是否正确地索引了你加入的牌桌？即，您为要加入的每个列创建索引？索引使数据库查询飞行。